Khalid mehmood

1) Frequency of Bluetooth is: a) 2.9 GHz b) 2.7 GHz c) 2.4 GHz d) 2.5 GHz 2) AMPS were publically introduced in: a) 1973 b) 1978 c) 1983 d) 1987 3) MTS stands for: a) Mobile Technology Services b) Mobile Telephone Services c) Mobile Technology System a) Mobile Telephone System 4) Cluster is denoted by: a) C b) M c) N d) T 5) Each cell has exactly ___ equidistant neighbors: a) 3 b) 4 c) 5 d) 6 6) Distance formula D= a) R3N b) 3RN c) RN d) N3R 7) Channel assignment (Frequency reuse) a) Efficient utilization of radio spectrum b) Increased capacity c) Minimized interference d) All of above 8) Each time a call is attempted, the serving BS request a channel from the a) MSC b) MTS c) PSTN d) MTSO 9) Dynamic schemes a) Reduces the call blocking probability b) Increases system capacity

c) Both a and b d) None of above 10) Dwell time is dependent on a number of factors a) Propagation b) Interference c) Distance from BS d) All of above 11) Unit of power is a) dBM b) dBW c) dB d) Both a and b 12) 30 is added to covert a) dBW to dBM b) dBm to dBW c) W to dBM d) dBW to W 13) Channel assignment (Frequency reuse) a) Efficient utilization of radio spectrum b) Increased capacity c) Minimized interference d) All of above 14) Types of Handover is a) Soft handover b) Hard handover c) Both a and b d) None of above 15) 2.5 gHz is the frequency of a) Channel b) Cell c) Bluetooth d) None of above 16) AMPS were publically introduced in: a) 1973 b) 1978 c) 1983 d) 1987

17) Methods for handover measurement are a) MAHO b) MTSO c) BAHO d) Both a and c 18) Half duplex a) One way communication b) Receive or transmit on single time c) Receive and transmit on single time d) None of above 19) Full duplex a) One way communication b) Receive or transmit on single time c) Receive and transmit on single time d) None of above 20) Dwell time is dependent on a number of factors a) Propagation b) Interference c) Distance from BS d) All of above

Amir jabbar

MCQ’S

1) Communication depend on 3 channels/mediums , transmitter , receivers , what is the 3rd medium ? a) Channels b) Transformer c) Cable d) Fiber

2) What kind of communication technique is use in Pakistan? a) 2G with 64-144 kbps? b) 2.5G with 64-144 kbps? c) 3G with 64-144 kbps? d) LTA with 100kbps?

3) The parallel of 3G is a) 1G b) 2G c) 2.5G d) LTA

4) The AMPS communication system based on FDMA analog was introduce in America in which era? a) 70’s b) 80’s c) 90’s d) 20’s

5) In ____ the user spoke with a mobile operator, who actually dialed the call over the PSTN. a) MTS b) MS c) BS d) LTA

6) III Gen, 00’s, communication system base on a) (FDMA), Analog. b) (TDMA) Digital. c) (CDMA), All Digital. d) (CDMA), Analog.

7) ______ allows subscribers to operate in mobile phone service areas other than the service area where the service is subscribed a) Roaming b) Grade of service c) both d) neither of above

8) _______ is a statistical concept which allows a large number of users to share relatively small number of channels providing access on demand from a pool of available channels. a) Trunking b) Raoming c) both d) neither

9) _______ is a measure of the ability of a trunked system to give access to a user requiring service during the busiest hour (4-6pm, Thu, Fri) a) Grade of Service b) roaming c) trunking d) all the above

10) _____ is called the frequency re-use factor in simple a) 1/N b) M c) S d) K

11) FDMA is used mainly for transmission a) Digital b) Analog c) Both d) Neither

12) TDMA stand for a) Time data mobile access b) Total disk multiple access c) Time division multiple access d) Total data mainly access

13) ______In frequency spectrum is divided in small spectra and is allocated to each user a) FDMA b) TDMA c) CDMA d) SDMA

14) A small division of a given geographical area is known as a) Shell b) Cell c) Core d) Kernel

15) the multiple access scheme in MIRS is a) FDMA b) TDMA c) CDMA d) WDMA

16) _______ reducing the cell size to increase capacity is called as a) Intelligent cell approach b) Microcell approach c) Top down approach d) Bottom up approach

17) CDMA uses the idea of tolerating interference by a) Intelligent modulation b) Spread spectrum modulation c) Manchester coding d) Bipolar non return to zero coding

18) _______ in FDMA is assigned between the spectrum of two adjacent users a) Interference band b) Co-inter band c) Guard band d) Inference band

19) Transceiver is a combination of a) Transmitter and receiver b) Cell and mobile unit

c) Cell and MTSO d) Transmitter and cell

20) CDPD is stand for a) Cellular digital packet data b) Cordless devices packet data c) Cellular device personal data d) Cordless digital personal device

Wajahat

1. The type of access technology used in GSM technology is a) FDMA/TDMA b) CDMA c) OFDMA d) None of the above

2. Which is not true for TDD? a) TDD uses diffrenet time slots for transmission. b) Single radia frequency can be used. c) Duplexer is required. d) It increases the battery life of the mobile phones.

3. The CDMA systems capacity and coverage is more than the GSM system

a) True b) False c) Equal d) None of the above

4. The battery life can be enhance by which technology access

a) CDMA b) TDMA c) OFDMA d) None of the above

5. Which one is the cellular technology core concept

a) TDM b) Frequency reuse c) Code reuse d) None of the above

6. The coverage of remote and sparsely populated area can be covered through

a) Microcell

b) Macrocell c) Picocell d) None of the above

7. Which cell can be used for most or dense populated area

a) Macro cells b) Micro cells c) Picocell d) None of the above

8. The process of modulation ,channel coding,trans direction and reverse for reception are

carried out a) BTS b) BSC c) MSC d) MS

9. Q higher valve is achievable by

a) Big cluster size b) Small cluster size c) Medium cluster size d) None of the above

10. The cell having same adjacent cluster cell with same channels are known as

a) Adjacent cell b) Co channel cell c) Macro cell d) Selective cell

11. AMPS (Advanced Mobile Telephone System) was invented by which country

a) Scandinavia b) UK c) America d) France

12. Which of the following are the cellular technologies

a) IS : 54 / Is-36 – America b) GSM – Europe and Asia c) IS-95 America d) All of the above

13. Which technology access is used for narrow band radio system

a) FDMA/TDMA b) FDMA c) CDMA d) ALL

14. There are how many types of Handover strategies that exist?

a) One b) Two c) Three d) None

15. The communication between keyboard and computer ,

a) Simplex b) Half-duplex c) Full-duplex d) Automatic

16. A television broadcast is an example of _______ transmissiona) Simplex b) Half-duplex c) Full-duplex d) Automatic

17. Data flows between two devices at the same time is known to be

a) Simplex b) Half-duplex c) Full-duplex d) None of the above

18. PSTN stand for

a) Pakistan Service Telephone Networkb) Police Station Telephone Networkc) Public Switch Telephone Networkd) None of the above

19. Which Electromagnetic rays has the highest frequency

a) Ultra-violent b) X-rays c) rays (Gamma)d) None of the above

20. The shape of the cell is

a) Circle b) Triangle c) Hexagonal d) All of the above

There are how many types of Handover strategies that exist?

The communication between keyboard and computer , the transmission is known to be

A television broadcast is an example of _______ transmission

Data flows between two devices at the same time is known to be

None of the above

Pakistan Service Telephone Network Police Station Telephone Network Public Switch Telephone Network None of the above

Which Electromagnetic rays has the highest frequency

rays (Gamma) None of the above

The shape of the cell is

All of the above

the transmission is known to be

wahab

MCQ

1:In ..........the first public mobile telephone service was introduce in twenty five major Americans cites

a:1946 b:1947 c:1998 d:1989

2:When mobile station wants to communicate with base station it is called.........

a:cell b:uplink c:control channel d:handoff

3:Communication system which allows simultanoues two way communication is .........

a:full duplex b:simplex duplex c:half duplex d:none

4:Communication system which provide only one way communication........

a:full duplex b:simplex duplex c:reverse channel 4:none

5:Simple paging system may cover a limited range of..........

a:5 to 10km b:1 to 5km c:7 to 10km d:2 to 5km

6:Bell obtain controlling interest in ..........

a:eastern union b:westren union c: northern union d:none

7:AMPS was based on ........paired voice channel.

a:768 b:666 c:199 d:345

8:The time a call may be maintained with in a cell without handover is called......

a:time b:dwell c:capacity d:velocity

9:Find SNR=?when s=1000 and N=3dbm from ration method?

a:27db b:34db C:67db d:23db

10:Measure the ability of a trunked system to give access to a user requring services the busiest hour (4pm-6pm) is called...

a:GOS b:power control c: trunking d:none

11:Traffic intensity =?(/lamda sign)

a:Au=-/H b:Au=? c:none d:A=1

12:For the first tier in hexogonal geometery carrier to interference ratio is.......

a:S/I=1?6(3N)^2 b:f=mg c:v=d/t d:1

13:There are...... types of radio communication

a:3 b:5 c:1 d:none

14:In place of the 832 channels avalible in AMPS the NAMPS system offered .....channels

a:3456 b:500 c:2,496 d:200

15:Scalabilty=?

a:s=kn b:s=n/k c :s=2k d:2k

16:abbrevation of MTSO is.......

a:mobile telephone switch office b:mobile temperature c:must take service offically d:none

17:In NAMPS capacity increases....... times narrow

a:3 b:5 c:6 d:7

18:...... geometry approximate omni direction base with free space propagation.

a:triangle b:circle c:hexagon d:square

19:each cell has exactly........ equidistant neighbour.

a:6 b:8 c:9 d:1

20:The process of transferring a mobile station fron one channel to another is called.....

a:handoff b:cell c:intensity d:page

M umar

1. Which one is not a wave-guided medium? a) Wired b) Wireless c) None of these d) Both of them 2. How many basic types of cells are there? a) 1 b) 2 c) 3 d) 4 3. How many duplexing techniques are there? a) 1 b) 2 c) 3 d) 4 4. Bluetooth Frequency: a) 1.4GHz b) 2.4GHz c) 3.4GHz d) 4.4GHz 5. Types of Antenna: a) 1 b) 2 c) 3 d) 4 6. Group of cell is called: a) BS b) MS c) Cluster d) MSC

7. Which one is based on CDMA? a) Soft Hand-off b) Hard Hand-off c) None of these d) Both of them 8. Communication between mobile phone was started in: a) 1946 b) 1947 c) 1948 d) 1952 9. How many channels were introduced by IMTS in 1964? a) 10 b) 11 c) 12 d) 13 10. How many users were served by IMTS in New York in 1976? a) 345 b) 445 c) 545 d) 645 11. In AMPS, every user had band of: a) 15KHz b) 20KHz c) 25KHz d) 30KHz 12. AMPS was publicly introduced in Chicago in: a) 1980 b) 1983 c) 1986 d) 1989 13. Which system was provided by TIA (Telecom Industry Association) in 1988? a) IS-54 b) IS-95 c) IS-72 d) None of these 14. GSM stands for: a) Global Service for Mobile b) Global System for Mobile c) Group of Special Machines d) Global Scope for Mobile 15. TACS stands for: a) Total Analog Communication System b) Total Analog Communication Service c) Total Access Communication System d) Total Access Communication Service 16. The interface between BS and MS is called: a) Common Air Interface b) Communication Access Interface c) Common Access Interface d) Communication Air Interface 17. GSM shaped in: a) 1985 b) 1986 c) 1987 d) 1988

18. 3rd Generation was based on: a) CDMA b) TDMA c) FDMA d) WCDMA 19. How many main types of channels are there? a) 1 b) 2 c) 3 d) 4 20. The cellular concept came in: a) 1st Generation b) 2nd Generation c) 3rd Generation d) None of these

M ali

MCQ’S:

Q#1 DESCRIBE THE FUNCTION OF ELECTRICAL COMMUNICATI ONSYSTEM (ECS)?

A. SEND MESSAGES B. INFORMATION C. BOTH D. NONE OF THESE

Q#2

WHAT KIND OF INFORMATION SOURCE EXIST IN SCS?

A. VOICE (SPEECH SOURCE) B. PICTURE (IMAGE SOURCE) C. BOTH D. NONE OF THESE.

Q# 3 WHAT DOES OFTA STANDS FOR IN WIRELESS COMMUNICATION ?

A. OFFICE OF THE TELECOMMUNICATION AUTHORITY B. Offshore Financial Trade Association C. ALL ABOVE D. NONE OF THESE.

Q#4 DEFINE THE MEDIUM OR A CHANNEL OF COMMUNICATION ?

A. OPTICAL FIBER

B. COAXILE CABLE C. BOTH D. NONE OF THESE

Q#5 WHAT ARE THE EXAMPLES OF ANALOG COMMUNICATION ? A.AMPLITUDE MODULATION (AM) B.FREQUENCY MODULATION (FM) C.BOTH D.NONE OF THESE Q#6 DESCRIBE THE FREQUENCY BAND OF A SATELLITE COMMUNICATION FOR UPLINK AND DOWNLINK ? A.6GHZ , 4GHZ B.7GHZ , 5GHZ C.ALL ABOVE D.NONE OF THEM Q#7 WHAT DOES MTSO STANDS FOR ? A.MOBILE TELEPHONE SWTCHING OFFICE B.MOBILE TELECOMUNICATION SYSTEM ONLINE C.NONE OF THESE D.ALL ABOVE Q#8 WHICH GENERATION IS BEEN USED IN PAKISTAN ? A.1ST GEN B.2ND GEN C.2.5 GEN D.3RD GEN Q#9 CELLULAR TELEPHONE SYSTEM CONSIST OF HOWMANY TYPES? A.MOBILE STATION B.BASE STATION C.BOTH D.NONE OF THESE

Q#10 Types of channels used in a mobile system A.Forward voice channel (FVC) B.Forward control channel (FCC) C.Reverse voice channel (RVC) D.Reverse control channel (RCC) E.ALL ABOVE

F.OPTION A & C

Q#11 HOW CAN WE ENSURE THE BETTER COVERAGE ?

A.BY INCREASING THE NO OF CELLS

B.BY INCREASING THE BASE STATION

C. BOTH

D. NONE OF THEM

Q#12 HOW TO MINIMIZE CO CHANNEL INTERFERENCE?

A.BY CREATING THE DISTANCE BETWEEN THEM

B.BY PLACING THEMSELVES CLOSER TO EACH OTHER

C. NONE OF THEM

D.BOTH A,B

Q#13 WHAT IS THE FORMULA OF SCALABILITY?

A.S=KN

B.S=N/K

C.BOTH

D.NONE OF THEM

Q#14 FORMULA OF CAPACITY ?

A.C=MS

B.E=MC^2

C.BOTH

D.NONE OF THEM

Q#15 WHAT ARE THE DEPENDANT FACTORS FOR DWELL TIME ?

A.PROPAGATION

B.INTERFERENCE

C.DISTANCE

D.ALL ABOVE

Q#16 The time a call may be maintained within a cell,without handover, is called the?? A.HAND OFF B.DWELL TIME C.HANDOVER D.NONE OF THESE Q#17 WHICH IS FASTER IN HANDOVER? A.MAHO IS FASTER . B.BAHO IS FASTER C.NONE OF THEM D.BOTH Q#18 FORMULA OF CO-CHANNEL INTERFERENCE FOR HEXAGON AL GEOMETRY? A.D=4H B.D=R(3N)^1/2 C.Q=D/R=(3N)^1/2 D.NONE Q#19 The power level transmitted by every mobile is controlled by? A.BS B.MS C.BOTH

D.NONE Q#20 WHICH SYESTEM PROVIDES A SOFTHANDOFF? A.CDMA B.GSM C.BOTH D.NONE OF THEM.

Shahbaz

1. Graham Bell invents telephone in ____

a) 1876

b)1877

c)1878

d)1879

2. Cordless system mobile provides ____ range?

a) Limited

b) Unlimited

c) Normal

d) None of these

3. A mobile unit proceed from one cell to another during the course of call is called ____

a) Paging

b) Roaming

c) Handover

d) None of these

4. The interconnection of mobile radio transmitters and receivers with the PSTN in ____

a) 1945

b) 1946

c) 1947

d) 1948

5. Second Generation communication system(GSM, GPRS, EDGE) is ____

a) FDMA

b)TDMA

c) CDMA

d) WCDMA

6. In cellular system, the base system is directly connected with

a) MSC

b) PSTN

c) Telephone

d) Both a & b

7. There are ____ types of channels used in mobile system

a) 8

b) 4

c) 10

d) 3

8. For hexagonal geometry, co-channel reuse ratio Q is given by ______

a) Q=d/r √ 4N

b) Q = d/r √3n

c) Q= d/r √5n

d) Q-d/r √ 6n

9. It can be shown that the no of hexagonal cells per cluster is given by ____

a) n= i^2+ij+j^2

b) n= i+ij+j

c) n= i^2+j^2

d) n= i+ij-j^2

10. The time a call may be maintained within a cell without handover is called ____

a) Dwell Time

b) MAHO Time

c) BAHO Time

d) None of these

11. MAHO is faster and more suited for ____

a) FM cellular environment

b) AM cellular environment

c) MICRO cellular environment

d) None of these

12. Channel Assignment can be ____

a) Fixed

b) Dynamic

c) Both a & b

d) None of these

13. There are ____ types of Handover

a) 6

b) 3

c) 10

d) 2

14. MAHO is based on the power measurement directly from ____

a) Mobile

b) Base Station

c) Both a & b

d) None of these

15. BAHO is based on the power measurement directly from ____

a) Mobile

b) Base Station

c) Both a & b

d) None of these

16. Number of different radio signals measured by ____

a) RSSI

b) DWELL TIME

c) SCATTERS

d) DIFFRACTOR

17. In a ____ handoff mobile station can communicate with two base stations at the same time.

a) Hard

b) Soft

c) Medium

d) None of these

18. GSM allows reuse factors of ____

a) 1

b) 3

c) 5

d) 7

19. GSM is digital cellular phone system using ____

a) FDMA

b) TDMA

c) CDMA

d) Both a & b

20. ____ is first generation mobile?

a) AMPS

b) DMPS

c) GSM

d) None of these

Rubi javed

1.Alexandar Graham Bell invented telephone in …………….

a. 1876 b. 1854 c. 1916

d. 1910

2.Communication system using radio waves to connect portable handset is called…………

a. Cordless telephone b. Mobile telephone c. Both a and b d. None of these

3.Cordless system provides ……………. Range?

a. Limited b. Unlimited c. Normal d. None of the above

4.The most popular frequency band for satellite communication is ……....... and………………

a. 4GHz for uplink and 6GHz for downlink b. 6GHz for uplink and 4GHz for downlink c. 12GHz for uplink and 4GHz for downlink d. 6GHz for uplink and 12GHz for downlink

5.In cellular system base station is directly connected to …………

a. PSTN b. IMTS c. MTS d. MSC

6.A mobile unit proceed from one cell to another during course of call is called …………

a. Paging b. Roaming c. Handover d. None of these

7.In MTS the user spoke with a mobile operator who actually dialed the cal over the …………..

a. BS b. MSC c. PSTN d. IMTS

8.AMPS was based on ………. Paired voice channels.

a. 876 b. 666 c. 574 d. 654

9.AMPS was publicly introduced in ……………

a. China b. Tokyo c. Chicago d. Brazil

10.In place of 832 channels available in AMPS the NAMPS system offered ……………… channels.

a. 900 b. 2496 c. 2456 d. 1200

11.Number of hexagonal cell per cluster is given by

a. N = i+j b. N = i+ij+j2 c. N = i2+ij+j2 d. None of these

12.Channel assignment can be………

a. Fixed b. Dynamic

c. Both d. None of these

13.Each cell has exactly ………….. equidistant neighbours.

a. 5 b. 4 c. 3 d. 6

14.The power level transmitted by every mobile is controlled by ………………

a. BS b. MS c. Both d. None of these

15.CDMA requires very strict power controlled …………………

a. 1db b. 4db c. 6db d. 5db

16.The time a call may be maintained within a cell without handover is called ………..

a. Dwell time b. MAHO time c. BAHO time d. None of these

17.GSM allows reuse factors of ……………..

a. 1 b. 3 c. 5 d. 7

18.There are …………. Types of channels used in mobile system.

a. 8 b. 4

c. 10 d. 3

19.In 1969 an additional channels were added in ………… MHz band.

a. 440-446 b. 480-490 c. 454-459 d. 430-435

20.Location area is an area covered by ……………

a. BTS b. BS c. MS d. Operator

21.In a ……………….. handoff mobile station can communicate with two base station at the same time.

a. Hard b. Soft c. Medium d. None of these

M nazeer

• MTSO stands for a) Mobile tower server office b) Mobile telephone server office c) Mobile telephone switching office d) None of the above

• A small division of a given geographical area is known as a) Shell b) Cell c) Core d) Kernel

• Transceiver is a combination of and . a) Transmitter and reciver b) Cell and mobile unit c) Cell and MTSO d) Transmitter and cell

• is a subscriber module which stores all the subscriber related information

a) ME b) SM c) MS d) BSS

• is a process of converting plaintext into cipher text a) Authentication b) Decryption c) Compression d) Encryption

• and are the administration task of the network menagerie a) Traffic control, synchronization b) Congestion control, flow control c) Subscriber management,eilling d) Traffic control, minimizing error

• CDPD is stand for a) Celluler digital packet data b) Cordless devices packet data c) Cellular device personal data d) Cordless digital personal device

• In frequency spectrum is divided in small spectra and is allocated to each user

a) FDMA b) TDMA c) CDMA d) SDMA

• CDMA uses the idea of tolerating interference by a) Intelligent modulation b) Speed spectrum modulation c) Manchester coding d) Bipolar non return to zero coding

• in FDMA is assigned between the spectrum of two adjacent users a) Interference band b) Co-inter band c) Guard band d) Inference band

• reducing the cell size to increase capacity is called as a) Intelligent cell approach b) Microcell approach c) Top down approach d) Bottom up approach

• TDMA stand for a) Time data mobile access b) Total disk multiple access c) Time division multiple access

d) Total data mainly access • an antenna which attempt to direct all its energy in a particular direction is called

as a a) Star antenna b) Horn antenna c) Disc antenna d) Directional antenna

• The multiple access scheme in MIRS is a) FDMA b) TDMA c) CDMA d) WDMA

• NA-TDMA system is approved and designed in 1987 by a grouped name a) TR35-6 b) TR53-8 c) TR45-3 d) TR54-8

• FDMA is used mainly for transmission a) Digital b) Analog c) Both a & b d) Neither a, b & c

Abbas samin

Qs 1 RSSI stand for (a) call signal strength indicator (b) radio signal strength indicator (c) roaming signal strength indicator

Qs 2 what is dwell time ? (a) call maintain in a cell without handover (b) call maintain in a cell with handover (c) call maintain in a cell in all format

Qs 3 Call freq band is ? (a)400 Mhz to 500 Mhz (b)500 Mhz to 600 Mhz (c) 800 Mhz to 900 Mhz

Qs 4 Macrocells is (a) Coverage area is low

(b) Coverage area is high (c) No Coverage area of it

Qs 5 How many parts of handover are there (a) 1 (b) 2 (c) 3

Qs 6 cellular Concept come in (a) first generation (b) second generation (c) third generation

Qs 7 what is scalability? (a) To multiply no of channel (b) To add no of channel (c) To divide no of channel

Qs 8 Frequency or ? (a) radian (b) watt (c) Channel

Qs 9 set of cell is (a) cluster (b) channel (c) frequency

Qs 10 Half Duplex is (a) mobile (b) phone (c) walky taky

Qs 11 US standard has (a) 1 generation (b) 2 generation (b) 3 generation

Qs 12 Control Channel has (a) 1 types (b) 2 types (b) 3 types

Qs 13 Fixed Channel Assigment has (a) defined (b) pre defined (c) Not pre defined

Qs 14 Dynamic Channel Assigment has (a) defined (b) pre defined (c) Not pre defined

Qs 15 Dwell time depend upon (a) propagation and interferce (b) propagation and distribution (c) propagation and minimization

Qs 16 BS stand for (a) base station (b) base stability (c) base stan

Qs 17 if power=1000w then what will be P(dbn) (a) 20 (b) 30 (c)60

Qs 18 The formula of SNR (a) S/N (b) N/S (c) R/S

Qs 19 if the cluster size is 7 and each cell has 70 channel so what are the total number of duplex channel (a) 490 (b) 470 (c) 420

Qs 20 MS stand for (a) mobile station (b) mobile sim

(c) mobile sample

M arsalan

1. In mobile station and base station uplink have have second name?

A. Downlink

B. Forward Link

C. Reverse Link

D. None of the above

2. FDMA stands for

A. Free Division Multiple Access

B. Face division Multiple Access

C. Frequency Division Multiple Access

D. All of the above

3. TDMA stands for

A. Tree Division Multiple Access

B. Tower Division Multiple Access

C. Time Division Multiple Access

D. None of the above

4. Which one is not a Duplexing Tecnique?

A. Simplex

B. Half Duplex

C. Multiple Duplex

D. Full Duplex

5. Omni directional antenna is

A. Edge Excited

B. Mobile Station Excited

C. Base Station Excited

D. Centre Excited

6. Directional Antenna is

A. Centre Excited

B. Mobile Station Excited

C. Base Station Excited

D. Edge Excited

7. PSTN stands for

A. Post Switched Telephone Network

B. Private Switched Telephone Network

C. Public Switched Telephone Network

D. None of the above

8. GSM stands for

A. Generation System for Mobile

B. Game System for Mobile

C. Global System for Mobile

D. None of the above

9. I-Gen Mobile in 80’s was

A. American Based

B. Europe Based

C. Germany Based

D. None of the above

10. II-Gen Mobile in 90’s was

A. TDMA based

B. CDMA based

C. FDMA based

D. None of the above

11. III-Gen Mobile in 2000 was

A. CDMA based

B. TDMA based

C. FDMA based

D. None of the above

12. In mobile station and base station downlink have which second name?

A. Uplink

B. Forward Link

C. Reverse Link

D. None of the above

13. Which one is not a channel?

A. Control channel

B. Frequency Channel

C. Voice Channel

D. All of the above

14. Which one is not a Control Channel?

A. Forward Control Channel

B. Reverse Control Channel

C. Voice Control Channel

D. All of the above

15. Which one is not a Voice Channel?

A. Forward Voice Channel

B. Control Voice Channel

C. Reverse Voice Channel

D. All of the above

16. CAI stands for

A. Control Air Interface

B. Common Air Interface

C. Communication Air Interface

D. All of the above

17. TACS stands for

A. Total Access Communication System

B. Tree Access Communication System

C. Tower Access Communication System

D. All of the above

18. I-Gen was

A. Ananlog based

B. Partial Digital based

C. Digital Based

D. None of the above

19. II-Gen was

A. Analog based

B. Partial Digital based

C. Digital based

D. None of the above

20. III-Gen was

A. Analog based

B. Partial Digital based

C. Digital based

D. None of the above

Moin mushtaq

21. Data flows between two devices at the same time is known to be

e) Simplex f) Half-duplex g) Full-duplex h) None of the above

22. PSTN stand for

e) Police Station Telephone Network f) Public Switch Telephone Network g) Pakistan Service Telephone Network

23. Which Electromagnetic rays has the highest frequency

e) Ultra-violent f) X-rays g) Gamma Rays h) None of the above

24. The shape of the cell is

e) Circle f) Triangle g) Hexagonal h) All of the above

25. Which structure is best suited for communication

a) Pentagonal b) Circular c) Triangular d) Hexagonal

26. The total number of channels are divided _______________

a) Equally b) Unequally c) Halved d) Quartered

27. In fixed channel assignment ______________________

a) Call blocking property is less b) Call blocking property is not possible c) Call blocking property is more d) None of the above

28. Channel borrowing helps us in _____________________

a) Increasing call blocking b) Decreasing call blocking c) Doesn’t help us in call blocking d) Is a lapse in the system

29. Which one of the options below is an advantage of fixed channel assignment?

a) Call blocking probability in the form of delay is quite more. b) Call blocking probability in the form of delay is less. c) It has no positive effect in call blocking. d) None of the above

30. Select the correct name of channels:

a) Data and voice channels b) Control and data channels c) Control and voice channels d) Call and control channels

31. Q higher valve is achievable by

e) Big cluster size f) Small cluster size g) Medium cluster size

32. The battery life can be enhance by which technology access

e) CDMA f) TDMA g) OFDMA

33. The process of modulation ,channel coding, trans direction and reverse for reception are carried out

e) BTS f) BSC g) MSC h) MS

34. AMPS (Advanced Mobile Telephone System) was invented by which country

e) Scandinavia f) UK g) America

h) France

35. If there are no free channels what error would the user receive? a) Call will be dropped b) low balance c) network busy d) none of the above

Unknown

MCQS

• 1-Design to send massages or information from a source that generates information to on or more destinations.

• (a)transmitter (b)channel (c)receiver (d)communication system • 2-the transmitter performs the matching of the massege signals into the channel by the

process called. • receiver (b)modulation (c) channel (d) transmitter • 3-continious time signal waveforms by

• analog source (b)analog modulation (c) analog source (d) AM/FM

• 4-serve the interface to the communication channel

• (a)digital demodulator (b)modulation (c) channel (d) transmitter • 5-introduces noise and distortion to the transmitted waveform

• digital demodulator (b)modulation (c) channel (d) transmitter

• 6-in mathematical model for communication channel additive noise channel produces. • digital demodulator (b)modulation (c) channel (d) SNR

• 7-example of a linear filter channel is

• (a)wireline telephone channel (b) SNR (c) channel (d) physical channel • 7- A message is sent to a paging subscriber via the paging system access number by a

telephone keypad or modem.

• (a)wireline telephone channel (b) SNR (c) pagging (d) physical channel • 8-singnals transmitted through by multiple radio stations not interfere

• (a)transmitter (b) SNR (c) pagging (d) physical channel

• 9-convert the output of the source into the electrical signal is suitable for transmission.

• (a)wireline telephone channel (b) SNR (c) pagging (d) physical channel

• 10-communication information source system • (a)voice (b) picture (c) plain text (d) all • 11-in wireline channel the component is not consist of

• (a)twisted pair (b) coaxial cabel (c)optical fiber (d) channel • -convert the electrical signals that are received into the form that are suitable for the use

like as

• (a)acoustic (b) signals (c) images (d) all

Kamil

1. What is the abbreviation of GSM

a) Global space for mobile b) Global sim for mobile c) Global system for mobile d) Global service for mobile

2. The formula for cluster is

a) N= i2+j2+i2j b) N= i2+j2+ij c) N= i2+j2+(ij)2 d) N= i2+j2+ij2

3. The communication from mobile station to Base station is known as :

a) Downstep b) Upstep c) Downlink d) Uplink

4.The space between Base station and Mobile station is known as CAI which stands for :

a) Common Air Interlink b) Common Air Interface c) Common Air Interference d) Common Air Intensity

5. 2nd Generation (GSM) of cellular communication provides data transfer rate of:

a) It doesn't provide data rate b) 10 kbps c) 384kbps-2Mbps d) 100-144 kbps

6. Distance formula for cell is :

a) D=R√(3N) b) D=N√(3R) c) D=R√(3M) d) D=R√(3) N

7. for Co-channel interference how many minimum cells are required ?

a) 1 b) 2 c) 3 d) 7

8. DCA stands for:

a) Digital Channel Assigned b) Digital Channel Accepted c) Dynamic Channel Assignment d) Direct Channel Assigned

9. MAHO and BAHO are types of handover based on :

a) Signals b) Cells c) Power d) Frequency band.

10. DCA has the probability or chances of call blocking?

a) Minimum b) Maximum c) No call blocking d) None of the above

11. howis the power and distancerealted :

a) P is directly proportional to d

b) P is inversely proportional to d2 c) P is inversely proportional to d d) P2 is direct proportional to √d

12.Hand off or Handover occurs when :

a) Change in cell occurs b) Change of Mobile identification no. c) Change in band d) Change in signal power

13. GSM is

a) TDMA based b) FDMA based c) CDMA based d) None of the above

14. ESN stands for :

a) Electronic serial number b) Electronic system name c) Electronic sim number d) Electronic service name

15. The verification of the mobile user done by MSC through:

a) Control channel b) Voice channel c) Costumer channel d) Verified channel

16. The formula used for scalability is :

a) K=SN b) S=KN c) N=SK d) K2=S

17. If P=1000 watt .what will be P(dBW)?

a) 3 dBW b) 30 dBW c) 3.3 dBW d) 300 dBW

18. A =UAu. Auis for :

a) Average users b) Traffic intensity c) No. of calls per unit time d) Area of cell

19. If a caller is maintains his call within the cell without handover then that time is known as :

a) Caller time b) Dwell time c) Drag time d) Handoff time

20. The angle which is used when making two co-channel interference cell:

a) 45 degree b) 60 degree c) 90 degree d) 30 degree

Unknown

1) cordless sustem mobile provides ______ range?

a) Limited

b) unlimited

c) normal

d) non of these

2) In MTS the user spoke with a mobile operator who actullay dialed the over the ______.

a) BS

b) MSC

c) PTSN

d) non of these

3) In 1969 an additional channels were added in ______ MHZ band

a) 440-446

b) 480-490

c) 454-459

d) 430-435

4) The process of selecting and allocating channels groups for all base stations with a system is known as ______.

a) frequency planning

b) frequency planning and reusing

c) frequency resuing

d) non of these.

5) Each cell has excatly ______ equidestint neighbours.

a) 5

b)3

c)10

d) 6

6) Channel can be ______.

a) fixed and dynamic

b) fixed

c) dynamic

d) non of these

7) The power level of transmitted by every mobile is controlled by ______.

a) MSC

b) PTSN

c) BS

d) non these

8) CDMA requires very strict power controlled ______.

a) 1db

b) 4db

c) 5db

d) 8db

9) Hexagonal cell per cluster is given by ______.

a) N=i2 + ij + j

b) N= j2 + ij+ j

c) N= i2 + ij + j 2

d) N= j2+ i j 2 +i

10) i and j are______.

a) positive integer

b) non positive integer

c) non negatice integer

d) non of these.

11) IS-95 CDMA system provides ______.

a) soft hand off

b) hard hand off

c) a and b both

d) non of these.

12) For hexgonal ge ometry ,co-channel reuse ratio Q is given by ______.

a) Q=d/r √ 4N b) Q = d/r √3n c) Q= d/r √5n d) Q-d/r √ 6n 13) locataion area is an area covered by ______. a) BTS b) BS c) MSC d) operator 14) The GSM network is divided into three major systems ______. a) SS,BSS,OSS

b) BTS,BS,MSC c) CELL,BTS,BS d) non of these 15) In a ______ handoff a mobile station only communicate with base station? a) Hard b) Soft c) Medium d) Non of these 16) GSM allows a reuse factors of ______. a) 1 b) 3 c) 5 d) 7 17) In a ______ handoff mobile station can communicate with two base stations at the same time. a) hard b) soft c) medium d) non of these

18) ______ is analoge celluler phone system using FDMA a) AMPS b) D-AMPS c) GSM d) Non of these. 19) GSM is digital celluler phone system using ______. a) FDMA b) TDMA c) CDMA d) Both and b 20) ______ is first generation mobile? a) AMPS b) D-MPS c) GSM d) Non of these

answers 1)a 2)c 3)c 4)b 5)d 6)a 7)c 8)a 9)c 10)c 11)a 12)c 13)c 14)a 15)a 16b 17)b 18)a 19)d 20)a

Tayyab

1. HLR stands for • High light register.

• Hexagonal register • Home location register

2. VLR stands for

• Value register • Visitor location register

• Vender location register 3. CDMA stands for

• Call duration main assessment

• Code division multiple access

• Code duplex main cell 4. How many types of interference?

• 2

• 4

• 5

5. FDD stands for • Frequency duplex division

• Free division duplex • Frequency division duplex

6. TDMA stands for

• Time duplex multiple access • Time division main access

• Time division multiple access 7. Number of channels in a cell are denoted by letter.

• K

• V • N

8. Co-channels interference is reduced by a formula

• N=i2+ij+j 2 • V=i2+ij+i 2

• N=i2+ik+k2

9. What structure is used for cell

• Circle

• Triangle • Hexagonal

10. RSSI stands for • Radio signal strength indicator • Real signal strength indicator

11. How many types of channel assignments • 2 • 3

• 4 12. Assignment involves the fixed number of cells is called

• Dynamic channel assignment

• Fixed channel assignment 13. Passing a active call to other cell is called

• Passing

• Interchanging • handover

14. How many types of handover

• 2

• 3

• 4 15. MAHO stands for

• Mobile assisted handover

• Modern assisted handover

• Main assisted handover 16. BAHO stands for

• Base assisted handover • Bare assisted handover • Banned assisted handover

17. The handover in which only base station is changed is called

• Soft handover

• Hard handover 18. The handover in which base station and also frequency is changed is called

• Soft handover

• Hard handover

19. How many type of antenas are

• 2 • 3

• 4 20. Ist generation 80’s ETACS (FDMA) ,analogue is an

• American’s standards

• European’s standard

Asif Khalid

1)Tacs system based on

a)FDMA b) TDMA c)GSM d)CDMA

2)RSSI stand for

a)Radio signal strength indicator

b)Radio strength signal induction

Radio signal strength induction

d)Radio strength signal indicator

3)P = 1000mw convert in db

a) 30dbm b) 30 dbw c) 3 dbm d) 3 dbw

4)SNR general formula is

a)�

� b)

�

� c) log(

�

�) d) 10ln(

�

�)

5) in third tier the no. of co channels are

a) 7 b) 12 c) 18 d) 2

6) MSC stand for

a) mobile switching controller

b) mobile signal center

c) mobile switching center

d) mobile signal controller

7) The communication between the B.S to mobile

a) up link

b) down link

c) reverse link

d) down link

8) Which one of the following is the multiple-access scheme used in GSM?

a) Time division multiple access (TDMA)

b) Frequency division multiple access (FDMA)

c)Code division multiple access (CDMA)

d)A combination of TDMA and FDMA

9) Which one of the following best characterizes IS 95?

a)a standard for cellular CDMA

b)a standard for cellular TDMA

c)a standard interconnecting base stations

d)a standard procedure for measuring indoor multipath propagation characteristics

10) 2G cell fone frequency is

a) 1.85-1.99 GHz

b)1.85-1.99 MHz

c)1.85-1.99 KHz

d)1800-1900 GHz

11) Naro band divide the frequency

a) 3 times

b) 3.5 times

c) 3.7 times

d) 4 times

12) AMPS software was installed by

a) AT&T

b) MOTOROLLA

c) BOTH A&B

d) NON OF THESE

13) LTE stand for

a) long time evolution

b) long term evolution

c) last time evolution

d) last term evolution

14) if S=1000w N=10,000mw find SNR

a) 10

b) 100

c) 1000

d) 10.5

15) S=KN where S stand for

a) cluster size

b) no of channels

c) no. of channels in each cell

d) total no. of duplex channel

16)∆=��(hand over) – (?)

a) ��(max)

b)��(min)

c)��(hand off)

d)��(n)

17)��=λH where H stand for

a) traffic intensity

b) average duration of a call

c) averageno of calls per unit time

d)average no of calls total time

18) The max no. of the path loss exponational is n=

a) 3

b) 4

c) 6

d) 5

19) �

� =

a) �

(√3N)�

b)

�(√3N)�

c) �

(√4N)�

d)

�(√4N)�

20) P(dbw) + ? = P(dbm)

a) 20

b) 30

c) 40

d) 10

Afzaish afzal

1. _______ refers to a user who has access to the same or similar telecommunication

services at different places.

a. Device portability.

b. User mobility.

c. Infotainment.

d. Location dependent.

Answer: B.

2. The wireless application protocol started at the same time as _________ in Japan.

a. h-node.

b. i-mode.

c. r-mode.

d. j-mode.

Answer: B.

3. The layer involved in the correction of transmission errors is

a. data link.

b. network layer.

c. physical layer.

d. transport layer.

Answer: D.

4. The layer responsible for routing of packets is ________

a. data link.

b. network layer.

c. physical layer.

d. transport layer.

Answer: B.

5. End-to-end connection is established by _____________.

a. Data link.

b. Network Layer.

c. Physical layer.

d. Transport Layer.

Answer: D.

6. Transparent bearer services only use the functions of the _______ layer to transmit data.

a. Data link.

b. Network Layer.

c. Physical layer.

d. Transport Layer.

Answer: C.

7. Initially Short messaging service (SMS) offered ______ characters.

a. 150.

b. 160.

c. 170.

d. 180.

Answer: B.

8. EMS (Enhanced Message Service) offers a message size of _______ characters.

a. 460.

b. 560.

c. 660.

d. 760.

Answer: D.

9. A GSM system consists of _____________ subsystems.

a. 2.

b. 3.

c. 4.

d. 5.

Answer: B.

10. The primary need of a GSM system is______________.

a. SIM.

b. PIN.

c.PUK.

d. IMSI.

Answer: A.

11. In DAB , the channel that carries all user data is __________

a. FIC.

b. MSC.

c. FIB.

d. VLR.

Answer: B.

12. The ________ mode transfers data in addressable blocks.

a. packet

b. synchronized

c. stream

d. Information

Answer: A.

13. The header size in DAB is _________ bytes.

a. 2.

b. 4.

c. 7.

d. 8.

Answer: C.

14. ______ lists the services of a provider and contain additional information for set-up

boxes.

a. EIT.

b. NIT.

c. SDT.

d. TDT.

Answer: B.

15. A __________ can occur if an object has changed by two users working with two copies.

a. conflict.

b. duplicate.

c. reintegration.

d. consistency.

Answer: A.

16. ________ RPC allows non-blocking RPCs even when a host is disconnected.

a. Double.

b. Reloadable.

c. Queued.

d. Two-phase.

Answer: C.

17. _________ refers to the movement of communication devices.

a. Device portability.

b. User mobility.

c. Infotainment.

d. Location dependent.

Answer: A.

18. __________ configuration describes a desktop in an office.

a. Fixed and wired.

b. Mobile and wired.

c. Fixed and wireless.

d. Mobile and wireless.

Answer: A.

19. The layer responsible for converting bits into signal is ________ layer.

a. physical.

b. datalink.

c. network.

d. transport.

Answer: A.

20. Cells are combined into _______.

a. sectors.

b. clusters.

c. regions.

d. impulse.

Answer: B.

M ali minhas

1. Which one is the part of channel assignment? • Ultra Channel assignment • Dynamic Channel assignment • Mixed Channel assignment • Extreme Channel assignment

Ans: Dynamic Channel assignment

2. Channel borrowing exists in? • Ultra Channel assignment • Dynamic Channel assignment • Fixed Channel assignment • Multi Channel assignment

Ans: Fixed Channel assignment

3. What is cluster? • Group of items • Group of things • Group of capacitors • Group of cells

Ans: Group of cells

4. How o denote the total no of channels? • ‘S’ • ‘A’ • ‘M’ • ‘C’

Ans: ‘S’

5. How to denote the cluster size? • ‘S’ • ‘N’ • ‘G’ • ‘R’

Ans: ‘N’

6. What is RSSI? • Radio signal smart integration • Radio smart system indicator • Radio signal strength integration • Radio signal strength indicator

Ans: Radio signal strength indicator

7. What is Dwell time? • Call maintained without handover • Call maintained with handover • Call receive time • Call duration

Ans: Call maintained without handover

8. What is shadowing? • Direct signal • Undirect signal • Signal strength • Signal range

Ans: Undirect signal

9. Which one is the type of handover? • Clear handover • Ultimate handover • Soft handover • Direct handover

Ans: Soft handover

10. What is MAHO stands for? • Multi assistance handling operation • Mobile assistance handover • Mobile assisted handover • Multi assistance handover

Ans: Mobile assisted handover

11. What is BAHO stands for? • Biggest assistance handover • Base assisted handover • Base station assisted handover • Base assistance handover

Ans: Base station assisted handover

12. Which one is faster? • MAHO • BAHO • KAHO • RAHO

Ans: MAHO

13. No of cells in a cluster? • 7 • 6 • 8 • 9

Ans: 7

14. Reason of hard handover? • Strong signal strength • Weak signal strength • Proper signal strength

• Perfect signal strength

Ans: Weak signal strength

15. Can one station borrow channel from another station? • Yes • Never • Sometimes • If available

Ans: If available

16. Base station always requests a channel from? • MCS • BSC • BCS • MSC

Ans: MCS

17. i & j are of which kind? • Positive • Neutral • Negative • Non negative

Ans: Non negative

18. How man neighbors are in each cell? • 5 • 3 • 2 • 6

Ans: 6

19. As the demand increase the number of base station also? • Decreased • Increased • Stable • Followed

Ans: Increased

20. 1/N is called the? • Factor • Reuse factor • Frequency reuse factor • Frequency factor

Ans: Frequency reuse factor

**************

M. irfan

Fill in the blanks : 1. communication system using radio waves to connect portable handset to a dedicated

fixed port (base station) which is connected to…….as a normal telephone line

2. The most popular frequency band for satellite communications is….. for the uplink

and…… for the downlink.

3. The geographic area served by a…………is broken up into smaller geographic areas.

4. …….acts as an intelligent central office switch that keeps track of the movement of the mobile subscriber.

5. The …… system faced a high demand for a very limited channel resource.

6.AMPS was based on 666 paired voice channels,spaced every……...in the …….region. 7. The CDMA system offered …. To……times the capacity of existing AMPS cellular techniques. 8. The process of selecting and allocating channel groups for all base stations within a system is known as………. 9. Channel assignment can be……..and……… 10. The time a call may be maintained within a cell, without handover, is called the ……………. 11. ………does not mean changing the channel but rather deciding which base station will handle the connection. 12. For hexagonal geometry, co-channel reuse ratio Q is………. 13. Pr(dBm) = 14. …….. is a measure of the ability of a trunked system to give access to a user requiring service during the busiest hour. 15. Au - Traffic intensity Au = ……… 16. GOS= Pr[blocking]= …………. 17. Pr [delay > 0 ] = ………….. 18. The average delay D for all calls in a queued system is………….. 19. The common air interface (CAI) defines communication between….. and….. 20. Billing is routed……… to the subscribers home service provider (HLR)

Awais shah

PART(B): MCQ’s

1, In AMPS, a ____GHz channel is provided to the users. ( 10, 20, 30, 40) ANS: 30

2, Up link is also known as_______. (Reverse, Forward, MS, BS link) ANS: Reverse Link

3, ______ link have 4 GHz frequency. (Uplink, downlink, MSC, BS Link) ANS: Downlink

4, A Full Duplex have ___ channels. (1,2,3,4) ANS: 2

5, Radio waves are confined to__________ areas known as cel. (satellite, spherical, hexagonal, square) ANS: hexagonal

6, 11 channels did _______ provide in 152-158 MHz band. (MSC, IMTS, ATS, MTS)

ANS: IMTS

7, _____ was based on full duplex channel. (ATS, MTS, IMTS, TS) ANS: IMTS

8, WCDMA and CDMA are the examples of______ generation cellular phone network. (First, Second, Third, Fourth) ANS: Third

9, A ______ is a physical medium that is used to Receive a signal. (Transducer, Channel, Transmitter, Receiver) ANS: Receiver

10, Filter is used for removing _______. (Power, frequency, Noise) ANS: Noise

11, Cell have _______ shape. (Square, Hexagonal, Rectangular, spherical) ANS: Hexagonal

12, The speed of 2.5 generation mobile system have _______ Kbps. (10, 44-164, 384-2M, 55)

ANS: 44-164

13, The first generation mobile is in ______ . (70’s, 80’s, 90’s, 2000) ANS: 80’s

14, The second generation mobile is in ______ . (70’s, 80’s, 90’s, 2000) ANS: 90’s

15, Cluster have _____ cells. (3, 5, 4, 7) ANS: 7

16, ________ is the type of Division Duplexing . (CDMA, TDMA, FDMA, FDD) ANS: FDD

17, ________ is still used in USA. (CDMA, TDMA, FDMA, FDD) ANS: CDMA

18, Television is an example of______ duplex channel. (Half, Full, Simplex, None) ANS: Simplex

19, Blue tooth have ______ frequency. (Low, High,2.4 GHz, No) ANS: 2.4 GHz

20, In Under communication ______ frequency is used. (Low, High, Zero, No) ANS: Low

Moazzam shabir

1. The world’s first cellular system was developed in 1979 by which country? a. United States b. England c. Japan d. China

2. What do the letters GSM currently mean? a. Global Signal Mechanism b. Global Systems for Mobile Communications c. Grade System Mobile d. Globe Satellite Maker

3. The type of access used in GSM technology is a. TDMA b. CDMA c. OFDMA d. None of the above

4. The coverage and capacity of CDMA system is more than that of GSM system a. True b. False c. Equal d. None of the above

5. The core concept used in Cellular technology is a. Transmission power saving b. TDM c. Frequency Reuse d. Code reuse

6. Technique to increase the system capacity and reduce co channel interference is a. Very high power signal transmission b. By installing the Omni directional antenna c. Making more Cells d. None of the above

7. The village areas are covered by

a. Microcell b. Macrocell c. Picocell d. Nanocell

8. Which of these cells are used for populated city areas? a. Macro cells b. Micro cells c. Picocell d. Umbrella cells

9. The cell having the same number in the adjacent cluster using the same set of frequency channels are termed as

a. Adjacent cell b. Co channel cell c. Copy cell d. Duplicate Cell

10. Which of these is a first-generation cellular phone system a. AMPS b. NAMPS c. GSM d. none of the above

11. Which of these is a second-generation TDMA based cellular phone system used in Europe

a. AMPS b. NAMPS c. GSM d. none of the above

12. Which of these is a second-generation CDMA based cellular phone system used in North America

a. GSM b. D-AMPS c. IS-95 d. none of the above

13. The __________ cellular phone system will provide high speed internet access and media

access along with voice a. first-generation b. second-generation c. third-generation d. none of the above

14. In a ______ handoff, a mobile station only communicates with one base station

a. hard b. soft c. medium d. none of the above

15. In a ______ handoff, a mobile station can communicate with two base stations at the same time

a. hard b. soft c. medium d. none of the above

16. _______ is an analog cellular phone system using FDMA a. AMPS b. CDMA c. NAMPS d. both (a) and (c)

17. AMPS operates in the _____ frequency band a. 800-MHz b. 900-MHz c. 1800-MHz d. none of the above

18. AMPS is a North American technology based on a. FDMA b. TDMA c. CDMA d. none of the above

19. GSM allows a reuse factor of _______

a. 1 b. 3 c. 5 d. 7

20. GSM is a European cellular phone system using ________ a. FDMA b. TDMA c. CDMA d. both (a) and (b)

21. IS-54 is based on ____________ a. FDMA b. CDMA c. TDMA d. none of the above

22. IS-95 based on CDMA uses the _______frequency band a. 824-894 MHz b. 900-MHz c. 1.8-2.0 Ghz d. either (a) or (c)

23. Which it the correct Erlang B formula?

a.

b.

c.

d.

24. In equation Q=D/R= 3N which one of the following is not valid value of, N the reuse factor ( where D = distance between two co-channel cells and R= radius of a co-channel cell)

a. 7 b. 5 c. 12 d. 19

25. The Erlang B formula can be used to calculate any one of the following three factors if you know or predict the other two:

a. Total traffic b. Blocking c. Lines d. All of the above

26. Convert 60 dBm to Power in watts a. 1 W b. 10 W c. 1000 W

d. 10000 W

27. Convert 0.1 W to Power in dBm a. 20 dBm b. 10 dBm c. 40 dBm d. 30 dBm

28. Convert 5 dBm to dBw a. log 25 b. 10 X log 25 c. -25 d. log 10 25

29. Convert 15 W to Power in dBw a. 11.60 dBw b. 41.76 dBw c. 11.60 dBm d. 11.76 dBw

30. Convert 43dBm to watts a. 29.9526 W b. 19.9526 W c. 39.9526 W d. 49.9526 W

Ammar

1. Telephone was invented by ______. (Bell, Marconi, Newton, Euler) 2. Bell sold his telephone patent to_______. (Western Union, Google, Microsoft, IBM) 3. Cordless Telephone has a range of _____. (100m, 200m, 300m, 400m) 4. Paging System is a _____ communication. (wired, wireless, cable, Internet) 5. Uplink is a message signal sent from earth to______. (earth, satellite, sun, moon) 6. Downlink is a message signal sent from satellite to____. (earth, satellite, moon, sun) 7. The popular frequency for Uplink is_______ GHz. ( 1, 2 , 5, 6) 8. The popular frequency for Downlink is_______ GHz. (2,4,6,8) 9. Radio waves are confined to hexagonal areas known as_____. (blocks, cells, circle,

triangle) 10. All communication in a cell is made to_____. (BS, MTSO, PSTN,MS)

11. When the distance of a mobile phone increases from BS, power is consumed_______. (less, more, average, none)

12. MTS in the US started in______. (1900, 1920, 1946, 1950) 13. MTS has a frequency of__ or___ GHz. (35-150, 100-200, 400-500, 500-900) 14. A simplex has ___ channels. (1,2,3,4) 15. Example of Simplex is_______. (TV, mobile, printer, mouse) 16. Example of Half Duplex is_____. (TV, radio, walkie talkie, pager) 17. Example of Full duplex channel is_______. (TV, pager, mobile, none) 18. IMTS was based on_______ channel. (simplex, wireless, half duplex, full duplex) 19. In NAMPS, a ____GHz cannel is divided into 3 channels of 10 GHz. ( 10, 20, 30, 40) 20. CDMA is still used in________. (UK, USA, Germany, Italy).

Adnan anwar

Multiple Choice Questions(MCQs)

1. Who invents the telephone. a) Graham Bell b) Alexander Graham Bell c) Elisha Gray d) All of above

2. In which year Alexander Graham Bell introduced his brand new patient. a) 1874 b) 1875 c) 1876 d) 1877

3. LMA Stands For a) Last Mile Access b) Lost Mile Access c) Least Mile Acess d) None Of These

4. CT Stands For a) Communication Telephone b) City Telephone c) Cordless Telephone

d) None Of These 5. Which is most popular frequency band for satellite communications for

Uplink a) 6GHz b) 8GHz c) 10GHz d) 12Ghz

6. Which Generation of Satellite use 14/12GHz band

a) First Generation b) Second Generation c) Third Generation d) Fourth Generation

7. Cellular telephones are personally a) Portable devices b) Non Portable Devices c) Communication Devices d) None of these

8. Cellular radio system is broken up into smaller geographic areas are called a) Cells b) Sells c) Structure d) All of above

9. MTSO Stands for a) Mobile telephone source office b) Mobile telephone sharing office c) Mobile telephone switching office d) None of these

10. The MTS system employed frequencies in a) 35Mhz or 150Mhz b) 37MHz or 150Mhz c) 39Mhz or 150Mhz d) All of above

11. In which year additional 12 channels were added in the454-459-MHz band. a) 1966 b) 1967 c) 1968 d) 1969

12. In IMTS each base station antenna was located on a) Tall structure

b) Short structure c) Long structure d) Wide structure

13. AMPS stands for a) American mobile phone system b) Advance mobile phone system c) American message phone system d) Advance message phone system

14. In which city AMPS was publicly introduced a) Chicago b) Sydney c) New York d) None of these

15. In NAMPS systems each existing 30-kilohertz voice channel is split into a) Two 10kilohertz channels b) Three 10kilohertz channels c) Four 10kilohertz channels d) Five 10kilohertz channels

16. A second approach named IS-54 (IS-136), developed by Telecommunication Industry Association

a) 1987 b) 1988 c) 1990 d) 1992

17. CDMA stands for a) Code division multiple access b) Code division multiplexer access c) Code division maximum access d) Code division minimum access

18. The First cellular system which is Japanese system deployed in a) 1977 b) 1978 c) 1979 d) 1990

19. TACS stands for (i) Total Access communication system (ii) Tall Access communication system (iii)Total access calling system

(iv) None of these

20. TACS was deployed in a) United state America b) Australia c) United kingdom d) Japan

Amir ishaq

1. The first telephone was invented by Graham Bell in ___________. (1880, 1876, 1857, 1900)

2. The issued message by a Pager is called as _________. (note, page, data, information) 3. Mobile communications by radio waves is managed in a _______ MHz band.

(800-900, 900-1k, 1.5k-2k, 2k-3k) 4. Cells are distributed in a __________ shape. (circular, hexagonal, rectangular, squarer) 5. AMPS were a _________ system. (American, British, French, German) 6. GSM system was developed in Europe in ________. (1970, 1988, 1990, 2000) 7. Each cell has ____ equidistant neighbors. (3, 4, 5, 6) 8. To find the required location, we have to move on a ____ angle within a cell. (50, 60, 70,

80) 9. The formula for distance measurement of a cell is_________. (� = ���, R½3N, 2π, π/2) 10. The busiest timings for mobile communication is_______. (9-11 am, 2-4 pm, 4-6pm, 10-

12pm) 11. There are almost _______ phones worldwide. (500 million, 700 million, 900 million, 1

billion) 12. The optimum channel available for mobile communication in the atmosphere

is________. (1-10 GHz, 1-20 GHz, 1-100 GHz, 1-200 GHz) 13. Mobile telephone system was introduced in the U.S in _______. (1900, 1946, 1950,

1960) 14. AMPS were publically introduced in Chicago in _______. (1983, 1990, 1995, 1999) 15. There are ____ different multiple access techniques. ( 5,6,7,8) 16. Graham Bell offered his telephone patent to the Western Union for _______.

($1,00,000 , $1 million, $1.5 million, $1 billion) 17. IS-54 was introduced by Telephone Industry Association (TIA) in ______.

(1950, 1960, 1970, 1988) 18. IS-95 was developed by TIA in______.(1990, 1994, 1999, 2002)

19. In 1983, Total Access Communication System (TACS) was deployed in________. (U.K, USA, Japan, Sweden)

20. Common Air Interface (CAI) defines communication between_________. (BS-MS, telephone system, wireless system, noise channels).

Zohadul huda

1. There was __________________ no. of users in first generation of mobiles. a) Fixed b) Infinite c) Interchangeable d) Borrowable

2. The lower bandwidth i.e. 800-900 is used for? a) Data service b) Voice service c) SMS sending d) Edge

3. How many types of channels exist? a) 1 b) 2 c) 3 d) 6

4. What will happen in a high capacity solution a) Coverage will increase b) Coverage will have no effect c) Coverage will decrease d) None of the above

5. In co channel interference a) Signals remain the same b) Signals are not shared c) Signals of a tower go from its area to another area d) None of the above

6. Which structure is best suited for communication e) Pentagonal f) Circular g) Triangular h) Hexagonal

7. The total number of channels are divided _______________ e) Equally f) Unequally g) Halved h) Quartered

8. In fixed channel assignment ______________________ e) Call blocking property is less f) Call blocking property is not possible g) Call blocking property is more h) None of the above

9. Channel borrowing helps us in _____________________ e) Increasing call blocking f) Decreasing call blocking g) Doesn’t help us in call blocking h) Is a lapse in the system

10. Which one of the options below is an advantage of fixed channel assignment?

e) Call blocking probability in the form of delay is quite more. f) Call blocking probability in the form of delay is less. g) It has no positive effect in call blocking. h) None of the above

11. Select the correct name of channels: e) Data and voice channels f) Control and data channels g) Control and voice channels h) Call and control channels

12. Channel borrowing exists with ______________? a) Neibourhood channels b) All the system channels c) Any channel of choice d) Choice of the user

13. If there are no free channels what error would the user receive? e) Call will be dropped f) low balance g) network busy h) none of the above

14. What is the estimated percentage of control channels? a) 2% b) 20% c) 40% d) 70%

15. What does MSC stand for? a) Masters in Sciences b) Mobile Security Corner c) Mobile Security Center d) Mobile Switching Center

16. What is better? a) Handover should be known to the user. b) User should be asked for the handover c) The handover should be transparent d) Handover should not occur

17. Optimum handover is between ____________ a) Handover and minimum power b) Before the handover point c) After the minimum power d) None of the above

18. In dynamic channel assignment the channels are a) Fixed b) Sharable c) Unlimited d) All of the above

19. The disadvantage of dynamic channel assignment is a) Delay by the MSC b) Small range between minimum power and handover c) Handover d) All of the above

20. In a cell the channels for active and handover users are ___________ a) Determined afterwards b) Pre determined c) Fixed at a specific condition d) None of the above

Asif meer

Multiple Choice Questions:-

1) cordless system mobile provides ______ range?

a. Limited

b. unlimited

c. normal

d. none of these

2-A mobile unit proceed from one cell to another during the course of call is called ____

a. Paging

b. Roaming

c. Handover

d. None of these

3.The most popular frequency band for satellite communication is ……....... and………………

a. 4GHz for uplink and 6GHz for downlink b. 6GHz for uplink and 4GHz for downlink c. 12GHz for uplink and 4GHz for downlink d. 6GHz for uplink and 12GHz for downlink

4) Each cell has exactly ______ equidistant neighbors.

a. 5

b. 3

c. 10

d. 6

5.In cellular system base station is directly connected to …………

e. PSTN f. IMTS g. MTS h. MSC

6) The power level transmitted by every mobile is controlled by ______.

a. MSC

b. PTSN

c. BS

d. none of these

7) i and j are______.

a. positive integer

b. non positive integer

c. non negatice integer

d. none of these.

8)The interconnection of mobile radio transmitters and receivers with the PSTN in ____

a. 1945

b. 1946

c. 1947

d. 1948

9) IS-95 CDMA system provides ______.

a. soft hand off

b. hard hand off

c. a and b both

d. none of these.

8.AMPS was based on ………. Paired voice channels.

a. 876 b. 666 c. 574 d. 654

9.AMPS was publicly introduced in ……………

e. China f. Tokyo g. Chicago h. Brazil

10. Second Generation communication system(GSM, GPRS, EDGE) is ____

a. FDMA

b. TDMA

c. CDMA

d. WCDMA

11..In place of 832 channels available in AMPS the NAMPS system offered ……………… channels.

e. 900 f. 2496 g. 2456 h. 1200

12) The GSM network is divided into three major systems ______.

a. SS,BSS,OSS

b. BTS,BS,MSC

c. CELL,BTS,BS

d. non of these

13) ______ is analog cellular phone system using FDMA

a. AMPS

b. D-AMPS

c. GSM

d. None of these. 14) Channel assignment can be………

e. Fixed f. Dynamic g. Both h. None of these

15) Number of different radio signals measured by ____

a. RSSI

b. DWELL TIME

c. SCATTERS

d. DIFFRACTOR

16)CDMA requires very strict power controlled …………………

e. 1db f. 4db g. 6db h. 5db

17) GSM is digital cellular phone system using ______.

a. FDMA

b. TDMA

c. CDMA

d. both and b 18)In a ……………….. handoff mobile station can communicate with two base station at the same time.

e. Hard f. Soft g. Medium h. None of these

19) ______ is first generation mobile?

a. AMPS b. D-MPS c. GSM d. None of these

20) For hexagonal geometry ,co-channel reuse ratio Q is given by ______.

a. Q=d/r √ 4N

b. Q = d/r √3n

c. Q= d/r √5n

d. Q-d/r √ 6n

H M usman

1. Which duplexing technique allows transmission in both direction but not at the same time?

(1) FDD

(2)Half-duplex

(3)Full-duplex

(4)Simplex

2. All MSCS are connected with

(1) PSTN

(2) MS

(3) MTSO

(4) None of these

3. In TDD MS and BS can communicate with each other at

(1) Same frequencies

(2) Same time

(3)Same frequencies, same time

(4) Same time different frequencies

4. What is the frequency of Bluetooth?

(1)3.84GHz

(2)1.84GHz

(3)2.4 GHz

(4)4.2 GHz

5. Range of mobile cummunication

(1) 800-900 MHz

(2) 800-1200 MHz

(3) 600-800 MHz

(4) 600-700 MHz

6. Shape of cell must be

(1) Hexagonal

(2) Octagonal

(3) Square

(4) Circular

7. AMPS stands for

(1) Auto mobile phone system

(2) American mobile phone system

(3) Advanced mobile phone system

(4) None of these

8. IS-95 is _____ based

(1) FDMA

(2) CDMA

(3) TDMA

(4) GSM

9. AMPS has initially ______ channels

(1) 600

(2) 666

(3) 660

(4) 6660

10. When you are calling from your own country your record and verification is present in _________.

(1) VLR

(2) MS

(3) MSC

(4) HLR

11. Which channel assignment has less call blocking capability?

(1) Fixed channel

(2) Dynamic channel

(3) Both

(4) None

12. Cellular concepts came into being in

(1) 1 Generation

(2) 2 Generation

(3) 3 Generation

13. In hard handover channel/frequency is changed?

(1) Yes

(2) No

(3) Sometimes

14. RSSI stands for

(1) Random signal storage indicator

(2) Random signal storage identity

(3) Radio signal switched indicator

(4) Radio signal strength indicator

15. Which type of handover is faster?

(1) MAHO

(2) BAHO

(3) Soft handover

(4) Hard handover

16. In 1988 customers of AMPS are

(1) 2 lac

(2) 20 lac

(3) 20,000

(4) 2,000

17. In NAMPS band is broken into ___ narrow bands

(1) 1

(2) 2

(3) 3

(4) 4

18. MSC is also called as

(1) PSTN

(2) BS

(3) MTSO

(4) MS

19. Omni-directional antenna is also called

(1) Edge Excited

(2) Centered Excited

(3) Base Excited

(4) None of these

20. AMPS uses ________ cummunication?

(1) Analog

(2) Digital

(3) Both

(4) None of these

Asim abdul qayyum

Q1) PICK THE RIGHT ANSWER:

1) Who invented the telephone?

a. newton b. Einstein c. bell

2) The most popular frequency band for satellite communications for the uplink is

a. 4 GHz b. 5 GHz c. 6 GHz

c) IMTS was introduced in

a. 1964 b.1965 c.1966

d)AMPS was based on paired voice channels

a.444 b. 555 c.666

e) AMPS was publicly introduced in

a. Los Angles b. New York c. Chicago

6) NAMPS was proposed by

a.AT&T b. Motorolac. Dell

7) NAMPS was succeeded by

a.IS-54 b.AMPS c.CDMA

8)The first cellular system developed

a. AMPS b.NAMPS c.TDMA

9)The first system that would permit a cellular user in one European country to operate in another European country with the same equipment

a. GSM b.GPS c.GPRS

10)The common air interface (CAI) defines communication between BS and

a.PSTN b.MS c.mobile

11)When a mobile enters area outside the home service area it is registered as in thenew service area

a. customer b.subscriber c. roamer

12)The process of selecting and allocating channel groups for all base stations within a system is known as

a. frequency re-use b. frequency planning c.roaming d. both a&b

14)Reduces the call blocking probability and increases system capacity

a. Dynamic Channel b. Fixed Channelc. voice channel

15)The time a call may be maintained within a cell, without handover, is called the

a.call time b.delay time c. dwell time

16)IS-95, Code Division Multiple Access (CDMA) system provides

a. soft handover b. hard handover c.hand shake

17)CT provides limited range and mobility in the vicinity of the base station

a. 100m b.500m c.1km

18) In place of the 832 channels available in AMPS the NAMPS system offered

a. 2,496 channels. b. 3,466 channelsc.4,466 channels

20) If the mobile has roaming authorization at home, MSC registers the subscriber in a visiting location register (VLR) as a

a. valid roamer b. new roamer c.old roamer

Waqar hassan

Paging systems are wireless Communication systems that send brief messages to a a. provider b. subscriber c. both d. none Communicating by radio-wave in the -------------- band, they permit a significant degree of mobility within a defined serving region that may be hundreds of square kilometers in area.

a. None b. 1000-20000 megahertz 5000-10000 megahertz d. 800-900-megahertz In 1964 AT&T introduced a second generation of mobile telephony, known as

a. MTS b. At&t mobile c. IMTS d. APSCS

In NAMPS systems each existing 30-kilohertz voice channel is split into

a. One channel b. Two channel c. Three channel d. Four channel

MSC abbreviation of

a. Mobile service center b. Mobile server center c. Mobile sender center d. Mobile switcher center

The GSM network is divided into three systems a. CELL,BTS,BSC b. SS,BSS,OSS c. BTS,BSC,MSC d. All of above

What do the letters GSM currently mean? a. Global Special Mobile b. Greater System's Mobile c. Global Systems for Mobile Communications d. none of the above!

Which of these statements are correct?

a. Mobile Switching Centre(MSC) would process the call made by one mobile phone user to another mobile phone user.

b. Public Switched Telephone Network(PSTN) would be involved in processing a call when the call is made by a mobile phone user to a land phone.

c. Both MSC and PSTN processes a call made from a mobile phone to a land phone. d. Electronic Serial Number(ESN) is the telephone number of the cellular instrument

assigned to the subscriber.

___________is a second-generation cellular phone system based on CDMA . a. IS-95 b. AMPS C. GSM d. none In AMPS, each band is divided into ______ channels. a. 1000 b. 900 c. 800 d . none of the above which of the following is one of the basic communication modes

a. Angle of sight b. Peer to peer c. Line of sight d. Full duplex

Transceiver is a. Combination of transmitter and receiver b. Name of transmitter c. Name of receiver d. Advance form of transmitter

Frequency can be re-used as many times if a. co channel nearer to each other b. remove the co channel c. acceptable limit between co channel station d. all of above

Dynamic Channel Assignment is good for

a. predetermined set of channels b. reduces the call blocking probability and increases system capacity c. both of above d. none of above

analog signals system is a. discontinues signal wave form b. continuous-time signal wave form c. both of above d. none of above

type of antina are a. uni and unique dricational b. omni and directional c. coxel and optical antina d. signal antenna

in the MTS call system controlled by

a. push-to-talk switch in the mobile handset. b. Freely talk c. Duplex channel d. None of above

TACS means ______

a. Total access control system b. Triple access control system c. Total access communication system d. A and c both

The common air interface (CAI) defines as a. user to base station communication b. communication between BS and MS c. MS and mobile communications d. both b and c types of channel that use in mobile system are

a. Fcc,rvc,pta,rcc

b. Rcc,rvc c. Fcc,rvc,rcc d. Fvc ,fcc,rvc,rcc

In cellular structure I and j are a. Positive integer b. Negative integer c. Non negative integer d. Both and c

Cell dragging is a. going to another cell very fast b. moving close range of cell slowly c. both a and b d. none of above

what is the response time from base station to user in 2G a. 2sec b. 4sec c. 8sec d. 10

M umar

1. Which one is nota wave-guided medium? a) Wired b) Wireless c) None of these d) Both of them 2. How many basic types of cells are there? a) 1 b) 2 c) 3 d) 4 3. How many duplexing techniques are there? a) 1 b) 2 c) 3 d) 4 4. Bluetooth Frequency: a) 1.4GHz b) 2.4GHz c) 3.4GHz d) 4.4GHz 5. Types of Antenna: a) 1 b) 2 c) 3 d) 4

6. Group of cell is called: a) BS b) MS c) Cluster d) MSC 7. Which one is based on CDMA? a) Soft Hand-off b) Hard Hand-off c) None of these d) Both of them 8. Communication between mobile phone was started in: a) 1946 b) 1947 c) 1948 d) 1952 9. How many channels were introduced by IMTS in 1964? a) 10 b) 11 c) 12 d) 13 10. How many users were served by IMTS in New York in 1976? a) 345 b) 445 c) 545 d) 645 11. In AMPS, every user had band of: a) 15KHz b) 20KHz c) 25KHz d) 30KHz 12. AMPS was publicly introduced in Chicago in: a) 1980 b) 1983 c) 1986 d) 1989 13. Which system was provided by TIA (Telecom Industry Association) in 1988? a) IS-54 b) IS-95 c) IS-72 d) None of these 14. GSM stands for: a) Global Service for Mobile b) Global System for Mobile c) Group of Special Machines d) Global Scope for Mobile 15. TACS stands for: a) Total Analog Communication System b) Total Analog Communication Service c) Total Access Communication System d) Total Access Communication Service 16. The interface between BS and MS is called: a) Common Air Interface b) Communication Access Interface c) Common Access Interface d) Communication Air Interface

17. GSM shaped in: a) 1985 b) 1986 c) 1987 d) 1988 18. 3rd Generation was based on: a) CDMA b) TDMA c) FDMA d) WCDMA 19. How many main types of channels are there? a) 1 b) 2 c) 3 d) 4 20. The cellular concept came in: a) 1st Generation b) 2nd Generation c) 3rd Generation d) None of these

Faheem ali

1 Types of cells are

(1) 1

(2) 2

(3)3

(4)4

2 Base station connected with one center called as

(1)PSTN

(2)BS

(3)MSC

(4)None of these

3 The BS station cover area called

(1) Unit

(2) Cell

(3) Uplink

(4) None of these

Cell should be of shape?

(1)2 sides

(2)4 sides

(3)6 sides

(4)8 sides

5 How many types of multiple access techniques?

(1) 3

(2) 5

(3) 7

(4) 2

6 FDMA divides

(1) Delay

(2) Frequency

(3) Time

(4) None of these

7 How many types of duplexing techniques?

(1) 2

(2) 3

(3) 4

(4) 5

8 Simplex have ________way of communications?

(1) 1

(2) 2

(3) 3

(4) 4

9 ______ have 2 way communications but not at the same time?

(1) Simplex

(2) Full duplex

(3) Half duplex

(4) None of these

10 Electromagnetic spectrum has _____ types?

(1) 2

(2) 4

(3) 6

(4) 7

11 Antenna has ______ types?

(1) 1

(2) 2

(3) 3

12 Omni-Directional is also called ?

(1)Edge Excited

(2) Center Excited

(3) Directional

(4) None

13 Voice services ranges from?

(1) 200-400

(2) 400-600

(3) 700-800

(4) 800-900

14 Data services range of

(1) 1800-1900

(2)1900-2000

(3) 2000-2100

(4) 1700-1800

15 Hard handoff occurs in?

(1) Voice services

(2) Data services

(3) AMPS and GSM

(4) none of these

16 In soft handoff ______ same?

(1) Time

(2) Frequency

(3) Phase

(4) Amplitude

17 In soft handoff _______ changes?

(1) PSTN

(2) MSC

(3) BS

(4) CDMA

18 In NAMPS each user have ______band?

(1) 10

(2) 20

(3) 30

(4) None of these

18 The interface between the BS and MS is called as

(1) CIA

(2) FIA

(3) FBI

(4) CAI

19Uplink is also called

(1) Down link

(2) Forward link

(3) Reverse link

(4) None of these

20 In cells we move ___ degree?

(1) 180

(2) 60

(3) 90

(4)45

MCQs by waqar ali

1. Alexander Graham Bell invents the telephone in

(a)1876 (b)1833(c)1878(d)1834

2.There are ---------------- million phones in the world.

(a)500(b)600(C)700(d)800

3.In a geostationary satellite system, a message signal is transmittedfrom an earth station via an (a)uplink(b)downlink(c)transponder(d)msc

4.The geographic area served by a cellular radio system isbroken up into smaller geographic areas is called

Bs(b)Ms(c)cell(d)unit. 5.A central controller in wireless is (a)msto(b)pstn(c)msc(d)bs 6. AMPS was publicly introduced in Chicago in

(a)1983(b)1938(c)1905(d)1934 7.-------------- was the first system that would permit a userin one European country to operate in another European

country with the same equipment. (a)amps(b)namps(c)gsm(d)cdma

8. A cellular telephone system consists of----components

(a)4(b)3(c)5(d)6

9. Types of channels used in a mobile system are

a)2(b)3(c)4(d)5(e)6 10.----------------------- allows subscribers to operate in

mobile phone service areas other service area where the service is subscriber (a)trunking(b)roaming(c)blocking (d)conference.

11.roamer is receiving information from

(a)fcc(b)rcc(c)fvc(d)rvc. 12.The process of selecting and allocating channel

groups for all base stations within a system is (a)freq re-use(b)freq planning (c)freq allocating (d)freq sharing

13.thenumberhexagonal cells per cluster is given by i2 + ij + j2(b)j2 +i2-ij(c)-i+j+j2(d)i3+j3-ij

14.The time a call may be maintained within a cell, without handover, is called the (a)dwell time.(b)waiting time(c)synchronius time(d)call duration

15There are several cells that use the same set frequencies (a)co-channel cells(b)same channel(c)bs channel(d)ms channel

16.For hexagonal geometry, co-channel reuse ratio Q is given by (a)d/r(b)d*r(c)r/d(d)d2

17.If Pl=1000 wattthenPdBwwill be (a)20(b)30(c)40(d)50(e)non of these option

18.snr=30db, s=50dbm,n=?dbw (a)30(b)40(c)50(d)60

19types of had off by technology are (a)2(b)3(c)4(d)5

20.types of hand off on basis of power are (a)2(b)4(C)3(d)5

Inamullah

1. who offered brand new patent

(i) Alexander Graham Bell (ii) Graham Alexander Bell (iii)Bell Alexander Graham (iv) Bell Graham Alexander

2. How many phones in the world in 1882

(i) 500milions (ii) 600milions (iii)700milions (iv) 800milions

3. WAN Stands for

(i) Wide Area Network (ii) Wide Access Network (iii)Wireless Area Network (iv) Wireless Access Network

4. What Communication system used to connect portable handset

(i) Wireless Waves (ii) Radio Waves (iii) Satellite Waves (iv) None Of these

5. PSTN Stands for

a) Public Switched Telephone Network b) Public Source Telephone Networks c) Public Share Telephone Network d) None Of These

6. Paging is a

a) Technique b) Systems c) Device d) None Of these

7. Paging Systems are

a) Wireless Communication System b) Wide Communication System c) World Communication System d) None of these

8. MTS stands for

(i) Master telephone Service (ii) Mobile Telephone Service (iii)Message Telephone Service (iv) None Of These

9. The Call Direction Was controlled by

(i) Call to talk (ii) Push to talk (iii) Push call to talk (iv) None of these

10. In which year AT&T introduced second mobile telephony

(i) 1960 (ii) 1962 (iii)1964 (iv) 1966

11. IMTS stands for

(i) Important Mobile Telephone Service (ii) Improved Mobile Telephone Service (iii) Intelligent Mobile Telephone Service (iv) None of these

12. AMPS developed primarily by

(i) Intel

(ii) Compaq (iii)AT&T and Motorola (iv) Dell

13. AMPS was publicly introduced in Chicago in

(i) 1978 (ii) 1981 (iii)1983 (iv) 1985

14. At the end of the first year of service AMPS subscriber throughout the

United State was

(i) 100,000 (ii) 200,000 (iii)300,000 (iv) 400,000

15. A second approach named IS-54 (IS-136),developed by

(i) Telecommunication Industry Association (ii) Telecomm Industry Association (iii)Telephone Industry Association (iv) None of these

16. The first cellular system actually to be deployed was a

(i) American System (ii) Russian System (iii)Japanese System (iv) Chinese system

17. The process of selecting and allocating channel groups for all base stations within a system is known as

(i) Frequency (ii) Frequency planning (iii)Frequency area (iv) Frequency distribution

18. Any call attempt within the cell can only be served by

(i) Used channel (ii) Unused channel

(iii) Reused channel (iv) None of these

19. Dynamic schemes

(i) Increase system capacity (ii) Decrease system capacity (iii)Improved system capacity (iv) None of these

20. Dynamic schemes require the MSC to collect

(i) Raw time data (ii) Real time data (iii)Repeat time data (iv) All of above

Hamza bin Khalid

MCQ’S >

TACS stand for:

1) Total access communication system 2) Total area comprehension software 3) Transition and control software 4) Transition access communication system

Control channels & Voice channels are related to:

1) Amplitude 2) Frequency 3) Wavelength 4) Power

GSM allowed user to:

1) Use cell phone in other countries

2) Make international calls cheaper 3) Make internet connection cheaper 4) Get rid of interruption

IMEI stands for

1) International mobile equipment identification 2) Interruption mode ends immediately 3) International mobile electronic identity 4) Institute the mobile and electron impulse

RSSI stands for

1) Radio station strategy indicator 2) Radioactive sensitive small induction 3) Radio signal strength indicator 4) Reverse small signal injection

In analogue system, the signal strength was measured by

1) Base station 2) Mobile station 3) Msc 4) Power sensitive electronic device

In same analogue system, signal strength is monitored by

1) Base station 2) Mobile station 3) Msc 4) Power sensitive electronic device

Co-channel interference exists between

1) Two adjacent cells 2) Far away cells 3) Far neighbouring cells 4) Cannot exist practically

SNR=

1) S/N 2) N/S 3) S*N 4) S+N

A=Au

1) U = No. of users 2) U= total traffic 3) U= Constant 4) U= avg. power

100 W =

1) 20Db 2) 30Db 3) 40 Db 4) 50 Db

20 db=

1) 50 dbm 2) 40 dbm 3) 60 dbm 4) 70 dbm

10 dbm=

1) 20 mw 2) 30 mw 3) 40 mw 4) 10 mw

No =

1) KBFT 2) KBTT 3) KBCT 4) KBHY

RCC=

1) Reverse control channel 2) Reverse condition chip 3) Restored conducting chip 4) Resolving chemical compound

LTE =

1) Long term evaluation 2) Light term evaluation 3) Little toned environment 4) Long term estimation

US have how many generations

1) 4 2) 5 3) 6 4) 3

How many generations are in the competition

1) US & Asia 2) US & Australia 3) US & British 4) US & Europe

Amps are used in

1) US standard 2) European Standard 3) Asian Standard 4) Australian Standard

ETAC are used in

1) US standard 2) European Standard 3) Asian Standard 4) Australian Standard

H usman siddiqe

MCQ’S

1.The area covered by a BS is called

A.Cell B.Cluster C.MSC D.MS

2.Shape of cell must be

A. Circular B. Triangular C. Hexagonal D.None of these

3.Time slots for TDMA

A.8 B.7 C.5 D.1

4.Omni directional antenna is also called as

A.Centered Exciter B.Edge exciter C.Origin Exciter D.None

5.Bandwidth for voice services are

A.800-900 B.600-800 C.700-900 D.None

6.Data services bandwidth are

A.1800-1900 B.1200-1400 C.1300-1500 D.None

7.In start of amps channels are

A.666 B.600 C.700 D.500

8.In amps band provided for each user

A.30 B.10 C.40 D.20

9.In Nampsband provided for each user

A.10 B.20 C.30 D.40

10.IS 95 is for

A.CDMA B.FDMA C.TDMA D.None

11.IS 54 is for

A.TDMA B.CDMA C.FDMA D.None

12.1st generation was based on

A.FDMA and analog

B.TDMA and digital

C.FDMA and digital

D.None

13. The link from BS to MS

A.Uplink B.Downlink C.Forward link D.None

14.Up link is also called

A. Downlink B.Reverse link C.Forward Link D.None

15.In home country you are registered with

A.HLR B.VLR C.CLR D.DLR

16.Cluster size can be

A.3 B.5 C.7 D.9

17. The distance between 2 Channel is

A.R(3)^1/2 N B.R/3N C.R*3*N D.None

18.In TDD

A. Frequency will be same

B. Frequency Different

C. Time Different

D. Time same

19.In FDD

A. Frequency same

B. Frequency different

C. Time same

D. None

20.CDMA base on

A. Code B. Time C. Frequency D. Magnitude

Unknown

• The type of access used in GSM technology is

a. FDMA/TDMA

b. CDMA

c. OFDMA

d. None of the above

• Which of these is not true for TDD?

a. TDD uses different time slots for transmission and reception paths

b. Single radio frequency can be used

c. Duplexer is required

d. It increases the battery life of mobile phones

• The connectivity from exchange to customer prermises is termed as

a. Data network

b. Access Network or Local Loop

c. Bridge network

d. None of the above

• The coverage & capacity of CDMA system is more than that of GSM system

a. True b. False

c. Equal d. None of the above

• The type of Access technology which can enhance the battery life is

a. CDMA b. TDMA

c. OFDMA d. None of the above

• The core concept used in Cellular technology is

a. TDM b.hn Frequency Reuse

c. Code reuse d. None of the above

• The table used for calculating the no of resources is

1. Erlang B table

2. Erlang C table

3. Queing method

4. None of the above

• The uplink frequency of P-GSM system is

1. 1850-1910Mhz

2. 1710-1785Mhz

3. 890-915 Mhz

4. None of the above

• The technique adopted to increase the system capacity and reduce co-chl interference is

1. High power BTS

2. By installing the Omnidirectional antenna

3. Sectorisation

4. None of the above

• The populated areas will be covered by remote and sparsely

1. Microcell

2. Macrocell

3. Picocell

4. None of the above

• Which of these cells are used for densely populated areas

a. Macro cells b. Micro cells

c. Selective cells d. Umbrella cells

• The cell having the same number in the adjacent cluster using the same set of RF channels are termed as

a. adjacent cell b. Co channel cell

c. Macro cell d. Selective Cell

• Higher value of Q is achievable in

1. big cluster size

2. small cluster size

3. medium cluster size

4. None of the above

• The terminal is under observation from the network for the possible problems. Under which list will this belong in EIR

1. White List

2. Grey List

3. Black List

4. None of the above

• The process of channel coding, Encryption, Multiplexing and modulation for Trans direction and reverse for reception are to be carried out by

a. BTS

b. BSC

c. MSC

d. MS

• To which of the generation does CDMA belongs

a.first generation

b.second generation

c.third generation

d.fourth generation

• Which of the following best characterizes IS 95??

a.A standard of cellular CDMA b. a standard of cellular TDMA

c.a standard procedure for measuring indoor multipath propagation characteristics

d.a standard interconnecting base stations

• Low battery level will cause a mobile device to a.Avoid competing for contention slots b.Shift to receive-only mode

b.Shut down altogether d.none of these

• Currennt wireless MACs are based on a. CSMA/CD b.CSMA/CA c.Hybrid technique depending on traffic d. Hybrid technique with fixed time partitions

Anss hasan

Q1.Mcq’s..

1. The higher frequencies, that is, ultraviolet light, X-rays and gamma rays, are normally not used for wirelesstransmission, because of which one of the following reasons?

a. They are difficult to produce and modulate

b. Do not propagate well through buildings

c. They are harmful to humans

d. All of the above

2. Which of the following is false for microwaves?

a. They travel in straight lines and are thus affected by the earth’s curvature

b. They are relatively inexpensive to use

c. They can propagate well through buildings

d. They are preferred over optic fiber, especially in harsh terrain or urban areas

3. According to Shannon’s theorem, the maximum data rate D of a noisy channel whose bandwidth is H Hz, and whose signal-to-noise ratio is S/N, is given by which one of the following formulae?

a. D = H log2 (1 + S/N)

b. D = H (1 + log2 S/N)

c. D = 2H log2 (1 + S/N)

d. None of the above

4. Which of the following is the correct sequence of waves in increasing order of frequencies?

a. Radio, microwaves, infrared, ultraviolet light, X-rays, gamma rays

b. Microwaves, radio, visible light, X-ray, ultraviolet light, gamma rays

c. Radio, microwaves, infrared, ultraviolet light, gamma rays, X-rays

d. Microwaves, radio, infrared, visible light, X-rays, gamma rays

5. Which one of the following is not true for infrared waves?

a. They are capable of traversing multiple paths without interferences

b. They are less secure than radio

c. They have reasonably high bandwidth

d. No government license is required for their operation

6. Globalstar satellites, which are close to the earth, do not need much power, and their round-trip delay is only a few milliseconds, are examples of which one of the following?

a. Geostationary satellites (GEOS)

b. Medium earth orbit satellites (MEOS)

c. Low earth orbit satellites (LEOS)

d. None of the above

7. To which one of the following generations does CDMA belong?

a. First generation

b. Second generation

c. Third generation

d. Fourth generation

8. Which one of the following is the multiple-access scheme used in GSM? a. Time division multiple access (TDMA)

b. Frequency division multiple access (FDMA)

c. Code division multiple access (CDMA)

d. A combination of TDMA and FDMA

9. Which one of the following best characterizes IS 95? a. a standard for cellular CDMA

b. a standard for cellular TDMA

c. a standard procedure for measuring indoor multipath propagation characteristics

d. a standard interconnecting base stations

10. The efficiency of a wireless system is given in which of the following units?

a. bits per second

b. bits per second per Hertz

c. bits per second per Hertz per km2

d. None of the above

11.A device that forwards data packet from one network to another is called a

(A) Bridge (B) Switch

(C) Hub (D) Gateway

12.Currennt wireless MACs are based on

a. CSMA/CD b. CSMA/CA c. Hybrid technique depending on traffic d. Hybrid technique with fixed time partitions

13.EEE has defined the specifications for a wireless LAN, called _______, which covers the physical and data linklayers. A) IEEE 802.3 B) IEEE 802.5 C) IEEE 802.11 D) IEEE 802.2 14. In IEEE 802.11, a ___ is made of stationary or mobile wireless stations and an optional central base station, known as the access point (AP). A) ESS B) BSS C) CSS D) none of the above 15.In IEEE 802.11, a BSS without an AP is called an _________. A) an ad hoc architecture B) an infrastructure network C) either (a) or (b) D) neither (a) nor (b) 16. In IEEE 802.11, a BSS with an AP is sometimes referred to as ____________. A) an ad hoc architecture B) an infrastructure network C) either (a) or (b) D) neither (a) nor (b) 17.In IEEE 802.11, communication between two stations in two different BSSs usually occurs via two ________. A) BSSs B) ESSs C) APs D) none of the above 18.In IEEE 802.11, a station with ________ mobility is either stationary (not moving) or moving only inside a BSS. A) no-transition B) BSS-transition C) ESS-transition D) none of the above 19.In IEEE 802.11, a station with ________mobility can move from one BSS to another, but the movement is confined inside one ESS. A) no-transition B) BSS-transition

C) ESS-transition D) none of the above 20.In IEEE 802.11, _______ is an optional access method that can be implemented in an infrastructure network (not in an ad hoc network). A) DCF B) PCF C) either (a) or (b) D) neither (a) nor (b)

Adnan 1. Message center (MXE) handles _____________ cell broadcast, voice mail, and notification.

A. voice mail

B. fax mail, e-mail

C. short message service

D. All of the above

2. The ____________are implemented as stand-alone nodes

A. AUC

B. EIR

C. Both 1 & 2

D. None of the above

3. The _________ is a database that contains information about the identity of mobile equipment that prevents calls from stolen, unauthorized, or defective mobile stations.

A. EIR

B. HLR

C. AUC

D. XME

4. The GSM network is divided into three major systems:

A. SS, BSS, OSS

B. BTS, BSC, MSC

C. CELL, BTS, BSC

D. None of the above

5. The __________ protects network operators from different types of fraud found in today's cellular world.

A. EIR

B. AUC

C. XME

D. SMSC

6. Which of these performs such functions as toll ticketing, network interfacing, common channel signaling?

A. MSC

B. VLR

C. HLR

D. AUC

7. Location Area is an area covered by ______.

A. BTS

B. BSC

C. MSC

D. Operator

8. GSM is a digital system with an over-the-air bit rate of _________

A. 9.6 kbps

B. 56 kbps

C. 144 kbps

D. 270 kbps

9. The separation between adjacent carrier frequencies is called. In GSM, this is __________.

A. 100 kHz

B. 200 kHz

C. 225 kHz

D. 250 kHz

10. GSM uses linear predictive coding (LPC). The purpose of LPC is to ____________ the bit rate

A. reduce

B. increase

C. maintain

D. None of the above

11. Transmission media are usually categorized as _______.

A. fixed or unfixed

B. guided or unguided

C. determinate or indeterminate

D. metallic or nonmetallic

12. Transmission media lie below the _______ layer.

A. physical

B. network

C. transport

D. application

13. _______ cable consists of an inner copper core and a second conducting outer

sheath.

A. Twisted-pair

B. Coaxial

C. Fiber-optic

D. Shielded twisted-pair

14. In fiber optics, the signal is _______ waves.

A. light

B. radio

C. infrared

D. very low-frequency

15. Which of the following primarily uses guided media?

A. cellular telephone system

B. local telephone system

C. satellite communications

D. radio broadcasting

16. Which of the following is not a guided medium?

A. twisted-pair cable

B. coaxial cable

C. fiber-optic cable

D. atmosphere

17. What is the major factor that makes coaxial cable less susceptible to noise than

twisted-pair cable?

A. inner conductor

B. diameter of cable

C. outer conductor

D. insulating material

18. In an optical fiber, the inner core is _______ the cladding.

A. denser than

B. less dense than

C. the same density as

D. another name for

19. The inner core of an optical fiber is _______ in composition.

A. glass or plastic

B. copper

C. bimetallic

D. liquid

20. When a beam of light travels through media of two different densities, if the angle of

incidence is greater than the critical angle, _______ occurs.

A. reflection

B. refraction

C. incidence

D. criticism

21. When the angle of incidence is _______ the critical angle, the light beam bends along

the interface.

A. more than

B. less than

C. equal to

D. none of the above

22. Signals with a frequency below 2 MHz use _______ propagation.

A. ground

B. sky

C. line-of-sight

D. none of the above

23. Signals with a frequency between 2 MHz and 30 MHz use ______ propagation.

A. ground

B. sky

C. line-of-sight

D. none of the above

24. Signals with a frequency above 30 MHz use _______propagation.

A. ground

B. sky

C. line-of-sight

D. none of the above

25. A parabolic dish antenna is a(n) _______ antenna.

A. omnidirectional

B. bidirectional

C. unidirectional

D. horn

26. A(n) _____ medium provides a physical conduit from one device to another.

A. guided

B. unguided

C. either (a) or (b)

D. none of the above

17. ________ cable consists of two insulated copper wires twisted together.

A. Coaxial

B. Fiber-optic

C. Twisted-pair

D. none of the above

18. _______ cable is used for voice and data communications.

A. Coaxial

B. Fiber-optic

C. Twisted-pair

D. none of the above

19. __________ consists of a central conductor and a shield.

A. Coaxial

B. Fiber-optic

C. Twisted-pair

D. none of the above

20. _____ cable can carry signals of higher frequency ranges than _____ cable.

A. Twisted-pair; fiber-optic

B. Coaxial; fiber-optic

C. Coaxial; twisted-pair

D. none of the above

21. ______ cables are composed of a glass or plastic inner core surrounded by cladding,

all encased in an outside jacket.

A. Coaxial

B. Fiber-optic

C. Twisted-pair

D. none of the above

22. ______ cables carry data signals in the form of light.

A. Coaxial

B. Fiber-optic

C. Twisted-pair

D. none of the above

23. In a fiber-optic cable, the signal is propagated along the inner core by _______.

A. reflection

B. refraction

C. modulation

D. none of the above

24. _________ media transport electromagnetic waves without the use of a physical

conductor.

A. Guided

B. Unguided

C. Either (a) or (b)

D. None of the above

25. Radio waves are _________.

A. omnidirectional

B. unidirectional

C. bidirectional

D. none of the above

26. Microwaves are _________.

A. omnidirectional

B. unidirectional

C. bidirectional

D. none of the above

27. _______ are used for cellular phone, satellite, and wireless LAN communications.

A. Radio waves

B. Microwaves

C. Infrared waves

D. none of the above

28. ________ are used for short-range communications such as those between a PC and

a peripheral device.

A. Radio waves

B. Microwaves

C. Infrared waves

D. none of the above

29. What type of modem uses your satellite dish to deliver an Internet connection? A. Satellite modem

B) Telephone modem C) DSL D) Cable modem 30. Hand-held wireless devices such as PDAs may be used to access the Internet over wireless networks. Which of the following operating systems are not used in these devices? A. Windows XP B. Pocket PC C. Palm D. Windows CE 31. Which network consists of one or more computers providing services to other computers? A. peer-to-peer B. wireless C. Internet D) client/server 32. Which of the following describes a set of rules used by every computer to transfer

information? A. communications protocol B. communications method C network software D. satellite modem 33. A local area network using wireless technology is termed a: A. WLAN B. wireless local area network C. LAWN D. all of the above 34 . Which form of wireless communications is also used by your TV remote control? A) 802.11b B) microwave C) infrared D) Bluetooth 35. Which of the following is measured in Kbps, Mbps, and Gbps? A) memory capacity B) network transmission speed limits C) PDA speed D) bandwidth 36. A third-party company that furnished the conduit for information by providing networks

that cover large geographic areas is called a:

A) WAN B) communications service provider C) digital subscriber line D) private network 37. Which of the following networks uses software to establish a secure channel on the

Internet for transmitting data? A. wireless network B. secure public network C. virtual public network D. virtual private network 38. Which wireless communications media is used to transmit data for distances of up to 30

feet? A. 802.11b B. WiFi C. microwave D. Bluetooth 39. All of the following are basic principles of networks, except: A. Only one computer must have a network card B. There must be communications media connecting the network hardware devices C. There must be at least one connecting device D. Each computer must have software that supports the movement of information 76. Which device connects multiple computers into a network in which multiple communications

links can be in operation simultaneously? A) Network interface card B) Ethernet card C) Network hub D) Switch H asad ali Multiple Choice Questions 1) cordless sustem mobile provides ______ range? a) Limited b) unlimited c) normal d) non of these

2) In MTS the user spoke with a mobile operator who actullay dialed the over the ______. a) BS b) MSC c) PTSN d) non of these 3) In 1969 an additional channels were added in ______ MHZ band a) 440-446 b) 480-490 c) 454-459 d) 430-435 4) The process of selecting and allocating channels groups for all base stations with a system is known as ______. a) frequency planning b) frequency planning and reusing c) frequency resuing d) non of these. 5) Each cell has excatly ______ equidestint neighbours. a) 5 b)3 c)10 d) 6 6) Channel can be ______. a) fixed and dynamic b) fixed c) dynamic d) non of these 7) The power level of transmitted by every mobile is controlled by ______. a) MSC b) PTSN c) BS d) non these 8) CDMA requires very strict power controlled ______. a) 1db

b) 4db c) 5db d) 8db 9) Hexagonal cell per cluster is given by ______. a) i2 + ij + j b) j2 + ij+ j c) i2 + ij + j 2

d) j2+ i j 2 +i 10) i and j are______. a) positive integer b) non positive integer c) non negatice integer d) non of these. 11) IS-95 CDMA system provides ______. a) soft hand off b) hard hand off c) a and b both d) non of these. 12) For hexagonal geometry ,co-channel reuse ratio Q is given by ______. a) Q=d/r √ 4N b) Q = d/r √3n c) Q= d/r √5n d) Q-d/r √ 6n 13) locataion area is an area covered by ______. a) BTS b) BS c) MSC d) operator

14) The GSM network is divided into three major systems ______. a) SS,BSS,OSS b) BTS,BS,MSC c) CELL,BTS,BS d) non of these 15) In a ______ handoff a mobile station only communicate with base station? a) Hard b) Soft c) Medium d) Non of these 16) GSM allows a reuse factors of ______. a) 1 b) 3 c) 5 d) 7 17) In a ______ handoff mobile station can communicate with two base stations at the same time. a) hard b) soft c) medium

d) non of these 18) ______ is analoge celluler phone system using FDMA a) AMPS b) D-AMPS c) GSM d) Non of these. 19) GSM is digital celluler phone system using ______. a) FDMA b) TDMA c) CDMA d) Both and b 20) ______ is first generation mobile? a) AMPS b) D-MPS c) GSM d) Non of these

21) Graham Bell invents telephone in ____

b) 1876 b)1877 c)1878

d)1879

22) Cordless system mobile provides ____ range?

a) Limited b) Unlimited c) Normal d) None of these 23) A mobile unit proceed from one cell to another during the course of call is called ____

b) Paging b) Roaming c) Handover d) None of these

24) The interconnection of mobile radio transmitters and receivers with the PSTN in ____ a) 1945 b) 1946

c) 1947 d) 1948

25) Second Generation communication system(GSM, GPRS, EDGE) is ____

b) FDMA b)TDMA c) CDMA d) WCDMA

26) In cellular system, the base system is directly connected with

b) MSC b) PSTN

c) Telephone d) Both a & b 27) There are ____ types of channels used in mobile system

a) 8

b) 4 c) 10 d) 3

28) For hexagonal geometry, co-channel reuse ratio Q is given by ______ a) Q=d/r √ 4N b) Q = d/r √3n c) Q= d/r √5n d) Q-d/r √ 6n 29) It can be shown that the no of hexagonal cells per cluster is given by ____ a) n= i^2+ij+j^2 b) n= i+ij+j c) n= i^2+j^2 d) n= i+ij-j^2 30) The time a call may be maintained within a cell without handover is called ____ a) Dwell Time b) MAHO Time c) BAHO Time d) None of these 31) MAHO is faster and more suited for ____ a) FM cellular environment b) AM cellular environment c) MICRO cellular environment d) None of these 32). Channel Assignment can be ____

a) Fixed b) Dynamic c) Both a & b

d) None of these 33) There are ____ types of Handover a) 6 b) 3 c) 10 d) 2 34). MAHO is based on the power measurement directly from ____ a) Mobile b) Base Station c) Both a & b d) None of these 35) BAHO is based on the power measurement directly from ____ a) Mobile b) Base Station c) Both a & b d) None of these 36) Number of different radio signals measured by ____ a) RSSI b) DWELL TIME c) SCATTERS d) DIFFRACTOR 37) In a ____ handoff mobile station can communicate with two base stations at the same time.

a) Hard b) Soft c) Medium d) None of these

38) GSM allows reuse factors of ____

a) 1

b) 3 c) 5 d) 7 39) GSM is digital cellular phone system using ____

e) FDMA

f) TDMA

g) CDMA

h) Both a & b

40) ____ is first generation mobile?

e) AMPS

f) DMPS

g) GSM

h) None of these Abid 1 In TDD MS and BS can communicate with each other at (1) Same frequencies (2) Same time (3)Same frequencies, same time (4) Same time different frequencies 2 Which duplexing technique allows transmission in both direction but not at the same time? (1) FDD (2)Half-duplex (3)Full-duplex (4)Simplex 3 All MSCS are connected with (1) PSTN (2) MS (3) MTSO (4) None of these 4 What is the frequency of Bluetooth?

(1)3.84GHz (2)1.84GHz (3)2.4 GHz (4)4.2 GHz 5 Shape of cell must be (1) Hexagonal (2) Octagonal (3) Square (4) Circular 6 Range of mobile cummunication (1) 800-900 MHz (2) 800-1200 MHz (3) 600-800 MHz (4) 600-700 MHz 7 AMPS stands for (1) Auto mobile phone system (2) American mobile phone system (3) Advanced mobile phone system (4) None of these 8 AMPS has initially ______ channels (1) 600 (2) 666 (3) 660 (4) 6660 9 IS-95 is _____ based (1) FDMA (2) CDMA (3) TDMA (4) GSM 10 When you are calling from your own country your record and verification is present in _________. (1) VLR (2) MS (3) MSC (4) HLR 11 Cellular concepts came into being in (1) 1 Generation (2) 2 Generation

(3) 3 Generation 12 Which channel assignment has less call blocking capability? (1) Fixed channel (2) Dynamic channel (3) Both (4) None 13 In hard handover channel/frequency is changed? (1) Yes (2) No (3) Sometimes 14 RSSI stands for (1) Random signal storage indicator (2) Random signal storage identity (3) Radio signal switched indicator (4) Radio signal strength indicator 15 Which type of handover is faster? (1) MAHO (2) BAHO (3) Soft handover (4) Hard handover 16 In 1988 customers of AMPS are (1) 2 lac (2) 20 lac (3) 20,000 (4) 2,000 17 In NAMPS band is broken into ___ narrow bands (1) 1 (2) 2 (3) 3 (4) 4 18 AMPS uses ________ cummunication? (1) Analog (2) Digital (3) Both (4) None of these 19 MSC is also called as (1) PSTN (2) BS

(3) MTSO (4) MS 20 Omni-directional antenna is also called (1) Edge Excited (2) Centered Excited (3) Base Excited (4) None of these Javeria MCQ's 1:The world's first cellular system was implemented by Nippon telephne and telegraph company in........... a:USA b:China c:Japan d:Austrilla 2:Coverage area of a base station is called........ a:cell b:uplink c:control channel d:handoff 3:The process of transferring a mobile station fron one channel to another is called..... a:handoff b:cell c:intensity d:page 4:Communication system that send breif messages to subscriber.......... a:paging system b:mobile system c:roamer 4:none 5:Total access communication was develop 1983 in......... a:USA b:UK c:Gremany 4:japan 6:Alexender graham bell invented the telephone in............ a:1947 b:1882 3:1876 4:1867 7:There are .......million phones in the world. a:100 b:300 c:700 d:800 8:Amps was publicly introduced in 1983 at......... a:los vegas b:califorina c:chicago d:texas 9:co-channel inter depends upon......... a:D=underroot R b:D=Runderoot 3N c:a=mg d:d=h/v 10:For hexogonal geometry,co-channel reuse ratio Q is given by....

a:Q=1/3 b:Q=D/R=underroot3N c:Q=1/36N^2 d:none 11:Grade of service measure by...... a: 2 ways b:3 ways c:4 ways d:2 ways 12:Number of calls per unit time is called....... a:coverage area b:traffic intensity c:area d:none 13:Concepts which allows large number of users to share relatively small number channels is called.......... a:trunking b:roaming c:bs d:Ms 14:Transmitter performs the matching of message signal to channel by process called.... a:modulation b:velocity c:none d:intensity 15:In 1946 AT&T introduced a 2nd generation of mobile telophone known as........ a:ITMS b:ATM c:MTS d:none 16:SNR=? a:s/n b:n/s c:s.n d:k 17:Abbrevation of PSTN is...... a:public switch telephone network b:people send telephone network c:pack service transport d:none 18:If coverage is faraway height of tower is........ a:lower b:higher c:failed d:zero 19:AMPS was launch ...... 1st generation (FDMA)analoge. a:80 b:50 c:40 d:55 20:Hexagon geometry approximate omni direction base with ..... space propagation. a:free b:zero c:short d:long