Madras University (UnOM) 2006 M.C.A Computer Aplications Computer Networks - Question Paper

Time: 3 hours
Maximum: 75 marks

PART A - [5 x five = Marks 25]
ans ALL ques..
All ques. carry equal marks.

1. (a) discuss in detail about local area networks.

Or

(b) describe the following: entities, peer entities, SAP, IDU and SDU.

2. (a) discuss time division switches.

Or

(b) Write short notes on ISDN interface.

3. (a) discuss 1 bit sliding window protocol.

Or

(b) discuss GO back N protocol.

4. (a) Name the strategies followed in congestion control.

Or

(b) Write short notes on choke packets.

5. (a) List the states of every connection maintained by transport entity.

Or

(b) discuss crash recovery in transport layer.

PART B - [5 x 10 = Marks 50]
ans any 5 ques..
All ques. carry equal marks.

6. explain the design problems of layers in OSI model.

7. discuss ATM networks in detail.

8. explain the RS 449 physical layer standard.

9. discuss differential pulse code modulation and delta modulation.

10. discuss the operation and frame format of high level datalink protocol.

11. Write short notes on: (a) Centralised routing (b) Isolated routing.

12. explain in detail about Ethernet.

13. discuss various kinds of switching.

Earning:   Approval pending.