MC March 2010 Set4

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) Explain the following.
i)Handover in GSM ii) Security services in GSM
b) Explain high speed circuit switched data transmission approach.
2. a) Write short notes on concept of Multiple access control and explain
its reference model.
b) Explain fixed TDM pattern and its advantages.
3. a) Describe data transfer from a mobile node to fixed node and vice-versa.
b) Write short notes on IPv6.
4. a) Write the differences between TCP and UDP.
b) Compare several enhancements to TCP for mobility.
5. a) List and explain the context types in context aware computing.
b) Write about the client server computing with adaptation.
6. a) Explain push based data delivery mechanisms in detail.
b) Explain Directory and Hash based selective tuning techniques.
7. a) Describe the working of Mobile Ad-Hoc network.
b) Explain Destination sequence distance vector routing algorithm in MANETs.
8. a) Define WAP and briefly explain about the features and characteristics of
WAP.
b) Discuss about the wireless transaction protocol of the transaction layer.