COMPUTER NETWORKS (R, T) B. TECH. DEGREE EXAMINATION, MAY 2005

MAHATMA GHANDHI UNIVERSITY (MG)

B. TECH. DEGREE EXAMINATION, MAY 2005
Sixth, Semester

Branch: Computer Science and Engineering,

Information Technology

COMPUTER NETWORKS (R, T)

(New Scheme-2002 admission)

Time: Three Hours                                                Maximum .100 Marks

Answer all questions.
Part A

1. What are the advantages of layered architecture ?

2. What are some of thephysjcal media that ethernet can run over

3. Describe any one method of error detection

4. Explain CSMA.          •

5. Explain the use of routing algorithms.

6. What are the causes for congestion in networks ?

7. Distinguish between Connection Oriented and Connectionless Services.

8. Briefly explain the functions of transport layer.

9. Give an over view of blue tooth.

10. What is a mobile switching centre?     (10 x 4 =- 40 marks)

Part-B

11. (a) Explain in detail the ISDN system architecture.

Or

    (b) Distinguish clearly between Hubs, Bridges and Routers.

12. (a) Explain different multiple access protocols.

Or

    (b) Explain in detail the slotted ALOHA protocol.

13. (a) Explain the causes of congestion and methods to avoid them in networks.

Or

    (b) Describe in detail the leaky bucket algorithm.

14. (a) Compare ATM with TCP/IP networks.

Or

    (b) Describe different protocols used by the transport layer in ensuring reliable data transfer.

15. (a) Explain blue-tooth technology architecture.

    (b) Write down different applications of the interact and about the protocols used for each application.

(5 x 12 60 marks)

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