Shivaji University 2007 B.E Computer Science Computer Network - university paper

Q-291
SECOND YEAR OF COMPUTER SCIENCE AND ENGINEERING (PART-2) EXAMINATION, 2006
SHIVAJI UNIVERSITY, KOLHAPUR
COMPUTER NETWORKS

Day and Date: Saturday, 20-05-2006 Total Marks: 100
Time: 10.00a.m. To 1.00p.m.

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


SECTION-1

Q.1 a) 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]


Q.2 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.3 a) Compare IEEE-802.3 and IEEE-802.4 standards with respect to subsequent points:[Marks 6]

1) Cable used
2) Channel access method
3) Encoding technique
4) Traffic priority
5) Data rate
6) Frame format

b) discuss FDDI in detail.[Marks 6]

c) What is flooding? elaborate issues associated with flooding? How these issues are solved? [Marks 6]



Q.4 a) discuss distance vector routing in detail.[Marks 8]

b) discuss the traffic shaping algorithms used to control congestion in the network.[Marks 8]

OR

b) discuss the fragmentation and reassembly in detail.[Marks 8]





SECTION-2



Q5. a) Describe service primitives and elements of transport protocol.[Marks 10]

b) Differentiate in ranging from TCP and UDP.[Marks 6]


Q.6 a) explain ARP and RARP protocols.[Marks 8]

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


Q7) a) discuss data encryption standards (DES)? How it works?[Marks 6]

b) discuss RSA algorithm.[Marks 6]

c) Discuss E-mail. [Marks 4]


Q8. Write short notes on (any three) [Marks 18=6*3]

a) Internet Control Message Protocol

b) TCP timers

c) WWW

d) DNS

Earning:   Approval pending.