B.E. (IT) MOBILE COMPUTING (2008 Pattern) (Elective – II) (Sem. – I)
Time :3 Hours] [Max. Marks :100
Instructions to the candidates:-
1) Answers to the two sections should be written in separate books.
2) Assume suitable data, if necessary.
SECTION – I
QI) a) What is handoff mechanism? Explain the concept of soft handoff and hard handoff. 
b) Explain the architecture of basic cellular system. 
Q2) a) Explain how a small frequency spectrum is used in cellular system. 
b) What is cell splitting? Explain why is it necessary to split the cell. 
Q3) Explain GSM architecture, entities in detail along with its security issues.
Q4) Write short notes on : 
b) GSM TDMA frame
c) VLR overflow problem
Q5) a) Explain the SMS architecture along with its features. 
b) What is number portability? Explain its various types. 
Q6) a) Explain the service node approach and hot billing approach used in mobile prepaid service. 
b) Explain in detail ‘International roaming in GSM’. 
SECTION – II
Q7) a) Explain features, advantages and limitations of GPRS. 
b) Explain WAP model in detail. 
Q8) a) Explain GPRS architecture in detail. 
b) Differentiate 2G and 3G mobile services and hardware features. 
Q9) a) What is the importance of home agent and foreign agent in mobile IP?
b) Explain various features and header format of IPv6. 
Q10) a) Write a detailed note on MANET. 
b) Explain DSDV and DSR in brief. 
QII) Write short notes on : 
a) Bluetooth technical features.
Q12) Write short notes on : 
b) FHSS and DSSS