MOBILE COMPUTING (MC) DECEMBER 2013 COMPUTER SCIENCE SEMESTER 7
Con. 90103-13. LJ-14120
(3 Hours) [Total Marks : 100]
N.B. : (1) Question No. 1 is compulsory.
(2) Attempt any four questions out of remaining six questions.
(3) Assume suitable data wherever necessary.
| 1. (a) | What is Hidden and exposed terminal problem? Discuss solutions to these | 5 |
| problems. | ||
| (b) | Write short note on wireless local loop. | 5 |
| (c) | Compare IEEE 802.11 and Hiper LAN2. | 5 |
| (d) | Which comonents are new in GPRS as compared to GSM? What is their | 5 |
| purpose? | ||
| 2. (a) | Draw and explain iGSM architecture and iGSM procedures. | 10 |
| (b) | Explain motivation of WATM also explain WATN generic reference model. | 10 |
3. (a) | Why is routing in multi-hop adhoc networks complicated? What are the special | 10 |
| challenges? | ||
| (b) | Explain Bluetooth protocol stack with neat diagram. | 10 |
4. (a) | Explain how the power management is done in IEEE 802.11 infrastructure based | 10 |
| and adhoc networks. | ||
| (b) | Explain snooping TCP and Mobile TCP with their merits and demerits. | 10 |
5. (a) | Explain protocol architecture of DECT. | 10 |
| (b) | Explain three Tier Architecture for mobile computing. | 10 |
6. (a) | Explain the following with respect to mobile IP. | 10 |
| (i) IP Packet delivery. | ||
| (ii) Registration. | ||
| (iii) Encapsulation. | ||
| (b) | Describe the mobile satelite system (LEO and GEO). | 10 |
7. | Write short note on any four :- | 20 |
| (a) WML Script. | ||
| (b) EPOC. | ||
| (c) Threats and Security issues in mobile computing. | ||
| (d) PCS Architecture. | ||
| (e) CDMA 2000. | ||
| (f) ZigBee. |
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