DISTANCE EDUCATION
M.Sc. DEGREE EXAMINATION, DECEMBER 2017.
COMPUTER NETWORKS
(2002 onwards)
Time Three hours Maximum 100 marks
SECTION A — (10 x 3 30 marks)
Answer ALL questions.
1. What are the three fundamental characteristics
determine the effectiveness of the data communication
system?
2. Distinguish between peer-to-peer relationship and a
primary-secondary relationship.
3. What are the criteria used to evaluate transmission
medium?
4. What are the advantages of ISDN?
5. Distinguish between ALOHA and SLOTTED ALOHA.
6. What are the issues of data link layer?
7. What do you mean by flow control?
8. What are the network support layers and the user
support layers?
9. Define Routers.
10. What are the duties of the transport layer?
Sub. Code
22
DE-2785
2
wk14
SECTION B — × 10 40 marks)
Answer any FOUR questions.
11. Describe the importance of network softwares.
12. With neat diagrams explain the Fibber optics.
13. Describe about HDLC and its advantages.
14. Discuss about various routing methods with suitable
examples.
15. How do you measuring network performance? Illustrate.
16. Discuss about Electronic mail and E-mail privacy.
SECTION C — × 15 30 marks)
Answer any TWO questions.
17. Describe any two address resolution protocols.
18. Illustrate the UDP header and explain.
19. Explain in detail about the domain name systems.