MU Computer Engineering (Semester 5)
Computer Network
May 2013
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary


1 (a) What is the need for layering? Discuss the issue for layers.
10 M
1 (b) Explain the ALOHA protocol. Compare the performance of Pure Aloha v/s Slatted Aloha at low load and high load.
10 M

2 (a) Explain different framing methods. What are the advantages at variable length frames over fixed length frames ?
10 M
2 (b) Explain : FDMA, TDMA and CDMA.
10 M

3 (a) Explain sliding window protocol with selective repeat.
10 M
3 (b) Explain with the suitable example CRC algorithm for computing checksum.
10 M

4 (a) What are transport service primitive?
10 M
4 (b) How TCP controls the congestion, explain in detail.
10 M

5 (a) Different between the following :-
(i) Protocol and Inteface
(ii) Connectionless and connection oriented service.
10 M
5 (b) What are different types of routing? Explain any one in detail.
10 M

6 (a) Explain the different factors associated with quality of service in inter network.
10 M
6 (b) Describe the IPV4 header format in detail.
10 M

7 (a) SONET
5 M
7 (b) Layer 2 v/s Layer 3 switching
5 M
7 (c) Bluetooth
5 M
7 (d) CIDR
5 M
7 (e) Berkely Socket.
5 M



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