NOVEMBER 2021 PSBEL
Time : Three hours Maximum : 75 marks PART A — (10 ´ 1= 10 marks)
Answer any TEN questions
1. Expand PDA.
2. What are near and far terminals?
3. Expand GSM.
4. What is meant by localization?
5. Differentiate infrared Vs radio transmission.
6. What is WATM?
7. What is the goal of Mobile IF?
8. What is an Adhoc network?
9. What is meant by routing?
10. What is meant by snooping TCP?
11. What is TETRA?
12. Expand CDMA.
PART B — (5 × 5 = 25 marks)
Answer any FIVE questions.
13. What are the Needs for Mobile Computing? Explain.
14. Write a note on Cellular Systems.
15. Discuss about the Satellite Systems in detail.
16. Explain about IEEE 802.11 system architecture.
17. Write a brief note on mobile TCP.
18. Narrate on MAC management.
19. Illustrate about the direct sequence spread spectrum.
PART C — (4 × 10 = 40 marks)
Answer any FOUR questions
20. Describe the concepts of multiplexing and its types.
21. Explain the UMTS system architecture.
22. Discuss the blue tooth architecture.
23. Give a brief account on tunneling and encapsulation.
24. Discuss the classical TCP improvements.
25. Give detailed notes on :
(a) SDMA
(b) TDMA.
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