MC March 2010 Set1

IV B.Tech. I Semester Supplementary Examinations, March 2010
MOBILE COMPUTING
(Common to Computer science &Engineering, Information Technology,
Electronics & Computer Engineering)
Time: 3 Hours Max Marks: 80
Answer any Five Questions
All Questions carry equal marks
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1. a) Discuss the system architecture of GSM.
b) What are the drawbacks of mobile and wireless devices.
2. a) What is CDMA? Explain in detail.
b) Explain in detail about Demand assigned multiple access(DAMA).
3. a) Explain the registration of a mobile node via the foreign and direct registration
with the home agent.
b) What are the requirements for a Mobile IP? Explain.
4. a) Explain the concept of Fast retransmit / Fast recovery in traditional TCP.
b) Explain Transmission/Time-out freezing approach.
5. a) Explain the concept Data hoarding with the help of a diagram.
b) Write brief notes on Data caching.
6. a) Explain Pull based data delivery mechanisms in detail.
b) Explain Directory and Hash based selective tuning techniques.
7. a) Explain in detail, properties of MANET.
b) Explain Dynamic source routing in MANETs.
8. Explain wireless datagram protocol and Transaction protocol.