Maharashi Dayanand University (MDU) 2007-5th Sem B.E Information Technology - Question Paper

B.E. fifth Semester(I.T.) Examination, December-2007
COMPUTER NETWORKS
Paper-IT-305-E

Time allowed:3 hours] [Maximum marks:100

Note: Attempt only five ques.

1. discuss OSI model. discuss function, service & protocol of every layer with advantage & disadvantage.
[Marks 20

2. explain subsequent protocol with advantages & disadvantages:
(i)Transmission Control
(ii)User data gram protocol
(iii)Internet protocol
[Marks 20

3. What is LAN? explain different features of LAN. Also different components used to build LAN.
explain in brief different standards of LANs.
[Marks 20

4. What is WAN? explain features of WAN? What is basic role of router in WAN? How congestion control
takes place? explain different technologies used in WAN.
[Marks 20

5. How network management takes place? How security management takes place in network?
explain different services such as class, quality in network?
[Marks 20

6. explain the subsequent protocol:
(i)ARP
(ii)RARP
(iii)ICMP
With every advantage & disadvantage.
[Marks 20
7. (a) What is frame relay? How it works? explain different advantages & disadvantages of it?

[Marks 12
(b) explain client-server infrastructure of network operating system.
[Marks 08

8. Write short notes on:
(i) ARPANET
(ii)NNTP
(iii)IP addressing
(iv)DNS
[Marks 20

Earning:   Approval pending.