M.Sc-M.Sc Computer Science 3rd Sem CS - 302 : Mobile Computing(University of Pune, Pune-2013)
M.Sc. (Semester - III)
COMPUTER SCIENCE
SEAT No. :
[Total No. of Pages : 2
CS - 302 : Mobile Computing
(2008 Pattern)
Time : 3 Hours] [Max. Marks : 80
Instructions to the candidates :
1) All questions are compulsory.
2) All questions carry equal marks.
3) Neat diagrams must be drawn wherever necessary.
4) Figures to the right indicate full marks.
Q1) Attempt all of the following :
a) What is the difference between CLDC and CDC?
b) What is good code for CDMA?
c) What is RTT problem in GSM? How it can be resolved? d) What are the advantages of spread spectrum technology?
e) What is the difference between FACOA and Co-COA?
f) What are the functions of MSC in GSM?
g) What is profile? Name different profiles of J2ME?
h) What are the functions of Gateway GSN in GPRS?
Q2) Attempt any four of the following :
Name all entities of GSM with their functionality.
What is snooping TCP? What are its advantages and disadvantages?
Why is routing in multi-hop ad-hoc network is complicated?
What are the advantages and disadvantages of cellular system? Explain MACA with its advantages and disadvantages.
Q3) Attempt any four of the following : [16]
a) What is micro-mobility support? Why it is required in mobile IP? Which
are the schemes available for micro-mobility support? b) Explain coda file system.
c) What is the purpose of following optimizations in TCP?
i) Fast retransmission/Recovery.
ii) Timeout freezing.
iii) Transaction oriented TCP. iv) Selective Retransmissions.
P.T.O.
d) What are the advantages of IPV6 in mobile IP?
e) Explain logical reference model of location based services (LCS).
Q4) Attempt any four of the following : [16]
How localization is achieved in GSM?
Explain architecture of WAP.
What are the features of WML?
What are the constraints possible on Text Box in J2ME?
What are the Quality Of Services (QOS) GPRS supports?
Q5) Attempt any four of the following : [16]
What is reverse tunneling? Why it is needed?
What improvements are needed in TCP for 2.5/3G networks? Compare proactive protocols and reactive protocols. Explain Agent Discovery mechanism of mobile IP.
Compare direct sequence spread spectrum with frequency hopping spread spectrum.
| Earning: Approval pending. |
