What are the modifications required in the TCP receiver to implement selective retransmission...
Transcript of What are the modifications required in the TCP receiver to implement selective retransmission...
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IV B.Tech I Semester Supplementary Examinations, Feb/Mar - 2015
MOBILE COMPUTING
(Common to Computer Science & Engineering and Information Technology)
Time: 3 hours Max. Marks: 75
Answer any FIVE Questions
All Questions carry equal marks
*****
1 a) Explain functional architecture of GSM. [8]
b) Write and explain novel applications of Mobile Computing. [7]
2 a) Explain in detail about IEEE 802.11 MAC Data frames. [8]
b) Discuss briefly about CDMA. [7]
3 a) What is basic purpose of DHCP? Name the entities of DHCP. [8]
b) How can DHCP be used for mobility and support of mobile IP? [7]
4 Write about
a) Snooping TCP.
b) Mobile TCP.
c) Transaction oriented TCP. [15]
5 a) Explain in detail about the client/server computing with adaptation. [8]
b) Describe the protocol stack of Bluetooth. [7]
6 Explain in detail the mobile agent architecture with appropriate diagram. [15]
7 What are the various types of routing algorithms in MANETs? Explain each
of them in detail. [15]
8 a) Discuss briefly the user scenario of Bluetooth. [8]
b) Explain about wireless Application protocol. [7]
Code No: R41054 Set No. 1 R10
1 of 1
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IV B.Tech I Semester Supplementary Examinations, Feb/Mar - 2015
MOBILE COMPUTING
(Common to Computer Science & Engineering and Information Technology)
Time: 3 hours Max. Marks: 75
Answer any FIVE Questions
All Questions carry equal marks
*****
1 a) Explain GPRS architecture reference model. [8]
b) Explain security services in GSM.
[7]
2 a) What are the disadvantages of reservation scheme. [6]
b) Explain polling and inhibit sense multiple access.
[9]
3 a) What is basic purpose of DHCP? Name the entities of DHCP. [6]
b) Explain about agent advertisement and delivery.
[9]
4 a) How does the selective transmission improve the transmission efficiency?
What are the modifications required in the TCP receiver to implement selective
retransmission protocol.
[8]
b) Explain snooping TCP. What are its advantages and disadvantages?
[7]
5 a) What is Mobile IP? Explain tunneling in the context of Mobile IP. [8]
b) Explain three- tier client-server architecture.
[7]
6 Explain in detail about IEEE 802.11 and its architecture..
[15]
7 a) Describe the properties of MANETs. [6]
b) Explain destination sequence distance vector routing algorithm in MANETs.
[9]
8 a) Explain networking, security and link management in Bluetooth. [8]
b) Write about J2ME in briefly. [7]
Code No: R41054 Set No. 2 R10
1 of 1
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IV B.Tech I Semester Supplementary Examinations, Feb/Mar - 2015
MOBILE COMPUTING
(Common to Computer Science & Engineering and Information Technology)
Time: 3 hours Max. Marks: 75
Answer any FIVE Questions
All Questions carry equal marks
*****
1 Briefly describe the following networks with example and applications:
a) Wired networks. b) Wireless networks. c) Ad hoc networks.
[15]
2 a) What is middleware? Describe its significance in handling the context of any
application.
[8]
b) Write brief notes on:
i) GPS. ii) Mobile Computing through Internet.
[7]
3 a) Describe the GSM architecture with its constituent elements. [8]
b) Explain the features of tunneling and encapsulation.
[7]
4 a) Describe CDMA data protocol stack. [8]
b) Give six functional differences between CDMA and GSM.
[7]
5 a) What is Mobile IP? Explain tunneling in the context of mobile IP. [8]
b) How does mobile IP work? What are the challenges with mobile IP with
respect to high speed mobility? How does cellular IP solve some of these
challenges?
[7]
6 a) What is HiperLAN ? Explain its stack relationship with OSI protocol stack. [8]
b) What is wireless sensor network? Describe various applications of wireless
sensor networks.
[7]
7 a) Explain wireless LAN architecture with schematic block diagram. [8]
b) Describe the WAP application environment.
[7]
8 Write short notes on:
a) SSL and its applications. b) TLS. c) WTLS.
[15]
Code No: R41054 Set No. 3 R10
1 of 1
www.jntuking.com
www.jntuking.com
www.jntuk
ing.co
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IV B.Tech I Semester Supplementary Examinations, Feb/Mar - 2015
MOBILE COMPUTING
(Common to Computer Science & Engineering and Information Technology)
Time: 3 hours Max. Marks: 75
Answer any FIVE Questions
All Questions carry equal marks
*****
1 a) What are the differences between middleware and gateways? Enunciate with
example in the context of mobile computing.
[8]
b) What are the characteristics of mobile computing environment? Describe
variants of mobile computing.
[7]
2 a) What are the important differences between a desktop computer and a portable
computer like PDA?
[8]
b) What are the design constraints for applications targeted for handheld devices? [7]
3 Explain the following in brief in the context of GSM networks:
a) Mobile station b) BSS
c) NSS d) OSS e) IMSI
[15]
4 a) What is Direct Sequence Spread Spectrum Technology? How does it works in
CDMA technology?
[8]
b) Describe different types of handoffs. What are the differences between Hard
handoff, Soft handoff and softer handoff?
[7]
5 a) What is basic purpose of DHCP? Name the entities of DHCP [8]
b) How can DHCP be used for mobility and support of mobile IP?
[7]
6 a) What are the advantages and disadvantages of wireless LAN? Under what
situation is a WLAN desirable over LAN?
[8]
b) Describe IEEE 802.11 family of standards.
[7]
7 What is Mobile Ad hoc Network (MANET)? What are the various types of
routing algorithms in MANETs? Explain each of them in detail.
[15]
8 Explain in detail about IEEE 802.11 and its architecture. [15]
Code No: R41054 Set No. 4 R10
1 of 1
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