Tamil Nadu Open University B.C.A COMPUTER NETWORKS Question paper

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Tamil Nadu Open University B.C.A COMPUTER NETWORKS - 2008  Question paper

COMPUTER NETWORKS

Time : 3 hours Maximum marks : 75
Answer for 5 marks questions should
not exceed 2 pages.
Answer for 10/15 marks questions should
not exceed 5 pages.
PART A — (5 × 5 = 25 marks)
Answer any FIVE questions.
1. What are various types of networks?
2. Explain point to point Network system.
3. What are the differences between data rate and bandwidth?
4. Compare fiber optic and copper wire transmission media.
5. Explain the five basic functions of E-mail.
6. What are the applications of ATM?
7. Differentiate between Datagram and virtual circuit.
PART B — (5 x10 = 50 marks)
Answer any FIVE questions.
8. Distinguish between OSI Reference Model and TCP Reference model.
9. Explain various multiplexing.
10. Distinguish between non adaptive and adaptive Routing algorithms.
11. (a) Explain the MACA protocol for wire communication.
(b) What is a VLAN?
12. (a) Compare switches and Hubs.
(b) Explain Repeaters.
13. List the standards of modems and explain.
14. Discuss ISDN services.