MCl633—MOBILE COMPUTING JUNE 2009

MCA EXAMINATION, MAY /JUNE 2009

MCl633—MOBILE COMPUTING

Elective

Part —A

1. Define near /far effect?

2. Give any two applications of satellite systems?

3. What are ad-hoc networks?

4. Define handover in WATM?

5. What is meant by Registration lifetime of a packet?

6. What is meant by tunneling?

7. How does the standard TCP behave when a packet is lost during transmission?

8. Define time — out freezing?

9. Mention the role of transaction layer in WAP?

l0. Mention any two messages of WCMP?

Part —B

l 1. a) Explain in detail:

i) DECT system. [Mark 8]

ii)TETRA system. [Mark 8]

Or

b) i) Discuss LEO,MEO, and GEO satellite systems. [Mark 8]

ii) Discuss Digital Video Broadcasting. [Mark 8]

l2. a )Explain in detail:

i)I-IIPERLAN [Mark 8]

ii) BLUETOOTH [Mark 8]

Or

b) What is meant by WATM? Describe WATM reference model, location management ,

services and QOS. [Mark 16]

13.a) i) Discuss the purpose and application of DHCP. [Mark 8] ii) Explain agent

discovery and registration. [Mark 8]

Or

b) Explain the various routing strategies in mobile ad—hoc networks?

14. a) Explain any 4 classical TCP improvement techniques. [Mark 16]

Or

b) i)Discuss Transaction oriented TCP in detail. [Mark 8]

ii) Discuss TCP over 2.5/3G wireless networks. [Mark 8]

15.a) Discuss the component of WAP arch/- and its application environment. [Mark 16]

Or

b)i)Write short notes on WML script. [Mark 8]