Telecom Set1

8/12/2019 Telecom Set1

1/14

THE TEST ON TELP

Time Le

(1)

CIC in a SS7 message ?

Identifies a transaction2M

arks

Identifies the signaling connection

None of the option is correct

Identifies the voice circuit with which the call is associated

(2) Primary functionality of GMSC is ?

Store the temporary identitity of MS2Marks

Store the VLR address

None of the options

To provide external interface with PSTN and other networks

(3) Which option is correct for Associated signaling ?

All of the options are correct2M

arks

Is uses separate paths for voice and signaling

Is is preferred mode for SS7

Signaling link directly parallels associated voice trunks

(4)A SIP back to back user agent is capable of generating SIP requests as

well as receiving SIP requests and processing them ?

True 1M


2/14

arks

False

Not Answer

(5) Which protocol is used to setup and tear down voice calls ?

SCCP2Marks

MTP

TCAP

ISUP

(6) Connectivity between two exchanges is by ?

None of the options2M

arks

Line

Satellite

Trunk

(7) Which of the option is correct for DTMF Signaling? ?

Slow digit transfer than pulsing2M

arks

Only 10 signals can be sent

Every digit comprises of two frequencies

Rotary keypad is used

(8) VOIP makes use of which of the following methods to transmit voice ?

Packet Switched2Marks

None of the given options


3/14

Circuit Switched

Virtual Circuit Switched

(9) Which is a drawback of PSTN ?

Analog last mile2M

arks

PSTN is build around 64Kbps

Difficult to introduce new services

All of the options are correct

(10)If there is an IP phone capable of sending SIP messages, what will it b

e called ?

SIP Proxy Server2M

arks

SIP Redirect Server

SIP User Agent

SIP Registrar

(11) Interface between BSC and MSC is called as ?

A bis2M

arks

C

A

B

(12) GSM MS has two units, ME and SIM, this provides ?

Terminal mobility2Marks


4/14

CLI facility

Roaming Facility

Call Forwarding Facility

(13)SNR continuously _______ as we move along the channel,away from t

ransmitter ?

Decreases and then increases2Marks

Increases

Decreases

Stays constant

(14) LAI consist of ?

MCC+MNC2M

arks

MCC+MNC+LAC+CI


MCC+MNC+LAC

(15) In GSM which Node allocate TMSI ?

BTS/BSC2M

arks

AUC

MSC/VLR

HLR

(16) Which one is benefit of VOIP? ?

All of the options are correct 2M


5/14

arks

Efficient usage of bandwidth

Cost savings due to same network for voice and data

Telephone number is associated with an IP Phone and not an location

(17) SIP works in which layer of the IP Protocol suite ?

Layer 5 - Application Layer2M

arks

Layer 3 - Network Layer

Layer 2 - Data Link Layer

Layer 4 - Transport Layer

(18) IN conceptual model is organised around following components ?

Basic call processing2Marks

IN service logic

Hooks

All of the options

(19)The primary function of RTCP is to provide feedback on the quality o

f service being provided by RTP ?

True1M

arks

False

Not Answer

(20) In SS7 Signaling, Initial Address Messgae(IAM) is used to ?

Un-Block a trunk circuit2M

arks


6/14

Block a trunk circuit

Release a trunk circuit

Reserve an idle trunk circuit

(21) F in FCAPS stands for ?

None of the option is correct2Marks

Fault Management

Framework

Flat charging

(22)Which of the following network elements convert the media from PST

N network to media in IP network ?

Media Gateway2M

arks

None of the given options is correct

Media Gateway Controller

Signaling Gateway

(23) Intelligent Peripheral perform(s) following task(s) ?

Announcements2M

arks

All of the options are correct

Voice messaging

Speeh synthesizing

(24) Within a country, two PLMNs are differentiated using ?

MNC 2M


7/14

arks

MCC

LAI

LAC

(25) Which one is a Network Management(NM) protocol? ?

SMPP2M

arks

SMTP

SNMP

SCCP

(26)Which one of the option is correct for Common Channel Signaling(CC

S) ?

Signalling is posible at any time during the call2Marks

It uses a separate, dedicated path for signalling

Allows better control over fraud

All the options are correct

(27) VOIP Gateways are used for ?

to provide interworking between PSTN and VOIP Nodes2M

arks

None of the given options is correct

to provide interworking between two PSTN Switches

to provide switching function in a pure VOIP network

(28) In GSM which element hold the Secret Keys ?


8/14

AUC

2M

arks

SIM

HLR

AUC and SIM

(29) Which SIP message is used to initiate a session ?

Initial Address Message2M

arks

Create Connection

Invite

Initiate

(30) Circuit Switching works on the principle of ... ?

All of the options are correct2M

arks

Establish, Transfer, Disconnect

Store and Forward

Establish, Disconnect,Transfer

(31) In Network Management(NM), Manager is ?

None of the option is correct2M

arks

Software that responds to client requests

Software program that can query agents

Person who manages the network

(32) IN conceptual model has how many planes ?


9/14

1

2M

arks

4

3

2

(33) Maximum cell size for GSM is ?

35 Metre2M

arks

10 KM

35 KM

10 Metre

(34) Core Network provides following functionality ?

All of the given options3M

arks

Radio Resource Management

Mobility Management

Call Handling

(35) ITU-T E.164 consists of ?

CC2M

arks

SN

All of the options

NDC

(36) Modulation is required because of ?


10/14

Ease of Multiplexing

2M

arks

Practical antenna size

Regulatory reasons

All of the given options

(37) Break-before-make is followed in ?

Inter Cell Handover2M

arks

Intra Cell Handover

Hard handover

Soft Handover

(38)Which of the following network elements convert incoming SS7 messa

ges from PSTN to SIGTRAN messages in VOIP ?

Media Gateway Controller2M

arks

Media Gateway

None of the above

Signaling Gateway

(39) One of the objective of SCCP is ?

None of the options2Marks

To provide call setup and tear down capability in SS7 network

To transport non circuit related messages

To provide logical signaling connections within SS7 network


11/14

(40) In SS7, Which Signal Unit carries user data ?

ISU2M

arks

LSSU

FISU

MSU

(41) Advantage of Distributed NM ?


arks

Less complcated

Scaleable

More intelligence on or close to managed entities

(42) Which protocol standardise the interface between SSP and SCP ?

ISUP2Marks

MTP

INAP

LDAP

(43) PCM is a/an _____________ technique. ?

Coding2M

arks

Pulse Shaping

Modulation

Analog to Digital Conversion


12/14

(44) Multiplexing is used to _______ ?

Separate information for various users from a single frame2M

arks

Shift frequency spectrum of the baseband signal

None of the options

Distribute communication resources among users

(45) Noise gets added to the signal in ?

Modulator2M

arks

Channel

Amplifier

All of the above

(46) What is the major functionality of SCP? ?

To route the signaling message2Marks

None of the option is correct

To provide basic call processing

To provide guidance to the SSP for the completion of the call

(47) Which one is type of NM system ?


arks

Dependent

Centralised

Independent


13/14

(48)In PSTN (using POTS phones), which of the following option is correc

t for " Channel Associated Signaling" technique ?

It can be used only for signaling between the subscriber and the local exchange2M

arks

It can be used for end-to-end signaling

None of the options

It can be used only for signaling between switches

(49) RTP (Real Time Transport Protocol) is a text protocol ?

True1M

arks

False

Not Answer

(50) Trunk interface signaling is from ?

subscriber to subscriber2M

arks

within network

none of the given options

subscriber to network

(51)How is it indicated to a PSTN subscriber that called party has been inf

ormed about incoming call? ?

The switch sends a "ringback tone"2M

arks


The switch sends him a "ringing tone"

The switch applies a current on his telephone line


14/14

Clo

se

Telecom Set1

Documents

Transcript of Telecom Set1