Tamil Nadu Open University (TNOU) 2009-2nd Year B.C.A Computer Application .>>COMPUTER NETWORKS>>E >> - Question Paper

B.C.A. DEGREE EXAMINATION
JUNE 2009.

Second Year

COMPUTER NETWORKS

Time : 3 hours Maximum marks : 75

PART A (5 5 = 25 marks)

Answer any FIVE questions.

1.         Define computer networks and explain its usage.

2.         Discuss briefly the various transmission media.

3.         Write short notes on CSMA.

4.         Short notes on ALOHA protocols.

5.         Explain about Transmission Control Protocol.

6.         What is DNS? Discuss its advantages.

7.         Explain about Network connecting devices.

PART B (5 10 = 50 marks)

Answer any FIVE questions.

8.         Explain about OSI reference model.

9.         Explain briefly about communication satellites.

10.       Explain medium access control sub layer in detail.

11.       Explain about elementary data link protocols.

12.       Explain in detail network layer design issues.

13.       What is ATM? Explain the architecture of ATM.

14.       Explain about E-mail architecture and services.