Code No: N0523
R07
Set No. 1
IV B.Tech I Semester Supplementary Examinations, December - 2013
MOBILE COMPUTING
(Common to Computer Science & Engineering, Information Technology and
Electronics & Computer Engineering)
Time : 3 hours
Max. Marks: 80
Answer any Five Questions
All Questions carry equal marks
**
1 a)
b)
Explain the architecture of GSM with neat sketch.
Explain the application of Mobile Computing.
2 a)
Differentiate classical Aloha multiple access and slotted Aloha multiple
access.
Briefly discuss about FDMA.
[8]
[8]
3 a)
b)
Explain encapsulation mechanism in mobile IP.
With neat diagram explain the basic configurations of DHCP.
[8]
[8]
4 a)
b)
Briefly explain about the classical enhancements to TCP for mobility.
Explain in detail about indirect TCP
[8]
[8]
5 a)
b)
Explain Cache invalidation mechanisms in detail.
What is data hoarding? Explain why data hoarding is necessary in mobile
environment.
[8]
6 a)
b)
Explain Pull based mechanism in detail.
Compare various Data dissemination mechanism.
[8]
[8]
7
List factors responsible for making routing in Ad-hoc network difficult and
explain each in brief.
[16]
Explain the mechanisms of various classes of wireless transaction protocol
[16]
b)
8
1 of 1
|''|'||||''|''||'|'|
[10]
[6]
[8]
Code No: N0523
R07
Set No. 2
IV B.Tech I Semester Supplementary Examinations, December - 2013
MOBILE COMPUTING
(Common to Computer Science & Engineering, Information Technology and
Electronics & Computer Engineering)
Time : 3 hours
Max. Marks: 80
Answer any Five Questions
All Questions carry equal marks
**
Explain the GSM protocol architecture for signaling.
What are the limitation of Mobile Computing and explain each with example.
Explain the security services offered by GSM
[8]
2 a)
b)
Discuss about various versions of carrier sense multiple access protocol
Briefly discuss about TDMA.
[8]
[8]
3
Explain packet flow in mobile IP, if two mobiles communicate and both are in
foreign networks. What addition routes do packets take if reverse tunneling is
required?
1 a)
b)
[8]
[16]
4 a)
b)
Explain Fast retransmit/fast recovery approach of TCP.
Write a detailed note on M-TCP.
[8]
[8]
5 a)
b)
Explain database recovery model in detail
Describe in detail about power aware and context aware computing
[8]
[8]
6
Explain about various data delivery mechanisms in detail and compare.
[16]
7 a)
Discuss the applications ad hoc networks. Also explain why routing is
difficult in ad hoc networks?
Explain Destination Sequenced Distance-Vector (DSDV).
[10]
Explain the architecture and security of WAP
[16]
b)
8
1 of 1
|''|'||||''|''||'|'|
[6]
Code No: N0523
R07
Set No. 3
IV B.Tech I Semester Supplementary Examinations, December - 2013
MOBILE COMPUTING
(Common to Computer Science & Engineering, Information Technology and
Electronics & Computer Engineering)
Time : 3 hours
Max. Marks: 80
Answer any Five Questions
All Questions carry equal marks
**
1 a)
b)
Explain the architecture of Mobile Computing with neat diagram
Explain the security services offered by GSM.
[8]
[8]
2 a)
What is the effect of hidden and exposed terminals in case of reservation
Aloha and MAC?
Briefly discuss about SDMA.
[8]
[8]
What is the basic purpose of agent advertisement in packet forwarding?
Explain the message format of agent advertisement packet with ICMP and
mobility extension, with giving suitable example.
[16]
4
Explain clearly about indirect TCP and snooping TCP.
[16]
5 a)
b)
Explain about query processing of DBMS with neat diagram.
Explain about client server computing with adaptation.
[8]
[8]
6 a)
b)
Describe in detail about hybrid mechanisms in data delivery.
Explain about communications asymmetry in detail.
[8]
[8]
7
Explain the salient characteristics of ad hoc networks and describe global
state routing algorithm.
[16]
Explain the type of the services offered by Bluetooth, each in detail.
[16]
b)
3
8
1 of 1
|''|'||||''|''||'|'|
Code No: N0523
R07
Set No. 4
IV B.Tech I Semester Supplementary Examinations, December - 2013
MOBILE COMPUTING
(Common to Computer Science & Engineering, Information Technology and
Electronics & Computer Engineering)
Time : 3 hours
Max. Marks: 80
Answer any Five Questions
All Questions carry equal marks
**
1 a)
b)
Explain how handover mechanism is handled by GSM.
Briefly explain the mobile services offered by GSM.
[8]
[8]
2 a)
b)
Discuss about the effect of near and far terminals in wireless networks
Briefly discuss about CDMA.
[8]
[8]
3
What is agent advertisement and discovery? Explain with neat diagram the
need of registration and registration process in mobile IP.
4 a)
b)
Briefly discuss about selective retransmission approach of TCP
Compare the advantages and disadvantages of I-TCP, S-TCP and M-TCP
5
What are the database issues involved in mobile environment? Discuss them
in detail.
6 a)
b)
Explain in details selective tuning techniques.
Give comparison between various data dissemination mechanisms.
7
Differentiate between MANETs and conventional networks. What advantages
do Adhoc networks offers? Explain in detail by giving suitable example.
[16]
8
Explain the security features of wireless transport layer security.
[16]
1 of 1
|''|'||||''|''||'|'|
[16]
[8]
[8]
[16]
[8]
[8]