Dr Bhim Rao Ambedkar University 2005 B.Tech Information Technology Advance Microprocessors - university paper

H-160
SECOND YEAR OF COMPUTER SCIENCE AND ENGINEERING (PART-2) EXAMINATION, 2005

COMPUTER NETWORKS

Total Marks: 100
Time: 2.30p.m to 5.30p.m

Instructions: 1) Attempt any 3 ques. from every part.
2) Figures to right indicate full marks.


SECTION-1

Q.1 a) Write short notes on (any four)[Marks 16=4*4]

1) Fragmentation

2) Tunneling

3) ALOHA

4) Optimality principle

5) Binary exponential Backoff Algorithm

Q.2 a) what is collision free protocol? discuss bit-map protocol in detaiL.[Marks 6]

b) discuss IEEE-802.3 standards in detail.[Marks 8]

C) Draw Manchester encoding for bit pattern”10011100”.[Marks 4]

Q.3 a) A channel has bit rate of 4kbps and propagation delay of 20 ms, for what range of frame size stop and wait protocol provide efficiency of 50%.[Marks 6]

b) discuss the necessity of MAC sub layer.[Marks 4]

C) discuss the various states of CSMA/CD protocol.[Marks 4]

Q.4a) discuss TCP/IP reference model in detaiL.[Marks 6]

b) What is framing? Why framing is necessary?Explain various framing techniques used in data link layer.[Marks 8]

C) What is Hamming Distance? What must be hamming distance of single bit fault detecting code.[Marks 2]


SECTION-2

Q5. Write short notes on (any three) [Marks 18=6*3]

a) BGP

b) DNS

c) SNMP

d) RARP

Q6. a) What is silly window syndrome? How this issue is solved in TCP.[Marks 10]

b) discuss the structure of UDP data gram.[Marks 6]

Q.7a) explain ARP and RARP protocols.[Marks 8]

b) discuss functions of network layer in ATM networks.[Marks 8]


Q8) a) discuss data encryption standards (DES)? How it works?[Marks 6]

b) discuss RSA algorithm.[Marks 6]

c)Discuss E-mail. [Marks 4]

Earning:   Approval pending.