R10
Code No: R41054
Set No. 1
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.
b) Write and explain novel applications of Mobile Computing.
2 a) Explain in detail about IEEE 802.11 MAC Data frames.
b) Discuss briefly about CDMA.
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3 a) What is basic purpose of DHCP? Name the entities of DHCP.
b) How can DHCP be used for mobility and support of mobile IP?
4
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Write about
a) Snooping TCP.
b) Mobile TCP.
c) Transaction oriented TCP.
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5 a) Explain in detail about the client/server computing with adaptation.
b) Describe the protocol stack of Bluetooth.
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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.
b) Explain about wireless Application protocol.
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R10
Code No: R41054
Set No. 2
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.
b) Explain security services in GSM.
[8]
[7]
2 a) What are the disadvantages of reservation scheme.
b) Explain polling and inhibit sense multiple access.
3 a) What is basic purpose of DHCP? Name the entities of DHCP.
b) Explain about agent advertisement and delivery.
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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.
b) Explain snooping TCP. What are its advantages and disadvantages?
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5 a) What is Mobile IP? Explain tunneling in the context of Mobile IP.
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b) Explain three- tier client-server architecture.
6
Explain in detail about IEEE 802.11 and its architecture..
7 a) Describe the properties of MANETs.
[15]
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b) Explain destination sequence distance vector routing algorithm in MANETs.
8 a) Explain networking, security and link management in Bluetooth.
b) Write about J2ME in briefly.
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R10
Code No: R41054
Set No. 3
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
*****
Briefly describe the following networks with example and applications:
a) Wired networks.
b) Wireless networks. c) Ad hoc networks.
1
2 a) What is middleware? Describe its significance in handling the context of any
application.
b) Write brief notes on:
i) GPS.
ii) Mobile Computing through Internet.
3 a) Describe the GSM architecture with its constituent elements.
b)
Explain the features of tunneling and encapsulation.
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[8]
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4 a) Describe CDMA data protocol stack.
b) Give six functional differences between CDMA and GSM.
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5 a) What is Mobile IP? Explain tunneling in the context of mobile IP.
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?
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6 a) What is HiperLAN ? Explain its stack relationship with OSI protocol stack.
b) What is wireless sensor network? Describe various applications of wireless
sensor networks.
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7 a) Explain wireless LAN architecture with schematic block diagram.
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b) Describe the WAP application environment.
8
Write short notes on:
a) SSL and its applications.
b) TLS.
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c) WTLS.
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Code No: R41054
R10
Set No. 4
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.
b) What are the characteristics of mobile computing environment? Describe
variants of mobile computing.
2 a) What are the important differences between a desktop computer and a portable
computer like PDA?
b) What are the design constraints for applications targeted for handheld devices?
3
Explain the following in brief in the context of GSM networks:
a) Mobile station
b) BSS
c) NSS
d) OSS
e) IMSI
4 a) What is Direct Sequence Spread Spectrum Technology? How does it works in
CDMA technology?
b) Describe different types of handoffs. What are the differences between Hard
handoff, Soft handoff and softer handoff?
5 a) What is basic purpose of DHCP? Name the entities of DHCP
b) How can DHCP be used for mobility and support of mobile IP?
6 a) What are the advantages and disadvantages of wireless LAN? Under what
situation is a WLAN desirable over LAN?
b) Describe IEEE 802.11 family of standards.
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7
What is Mobile Ad hoc Network (MANET)? What are the various types of
routing algorithms in MANETs? Explain each of them in detail.
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8
Explain in detail about IEEE 802.11 and its architecture.
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