Computer Network - May 2015

Computer Engineering (Semester 5)

TOTAL MARKS: 80
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Assume data if required.
(4) Figures to the right indicate full marks.

1 (a) What are the design issues for the Layers? (4 marks)

1 (b) Differentiate between Aloha and Slotted Aloha. (4 marks)

1 (c) Explain in short different framing Methods. (4 marks)

1 (d) How does the Token Bucket Algorithm works? (4 marks)

1 (e) Why does the data link protocol always the CRC in a trailer rather than in a header? (4 marks)

2 (a) Explain Sliding window Protocol using Go Back-N technique. (10 marks)

2 (b) Describe the OSI Reference Model with a neat diagram. (10 marks)

3 (a) What is the function of IP Protocol? Discuss its header format. (10 marks)

3 (b) Discuss the quality of service parameters in computer network. (10 marks)

4 (a) What is count to infinity problem in distance vector routing? Discuss in detail. (10 marks)

4 (b) Explain three way handshake technique in TCP. (10 marks)

5 (a) Explain the need for DNS and describe the protocol functioning. (10 marks)

5 (b) Explain CSMA Protocol. Explain how collisions are handled in CSMA/CD. (10 marks)

Write short notes on the following:

6 (a) Functions of Session Layer. (5 marks)

6 (b) Address Resolution Protocol (ARP). (5 marks)

6 (c) Berkeley Socket. (5 marks)

6 (d) Differentiate between OSPF and BGP. (5 marks)