Rajiv Gandhi Proudyogiki Vishwavidyalaya 2011-6th Sem B.E Computer Science and Engineering .(ester) - Question Paper

B.E.(sixth semester) EXAMINATION,June.2011

COMPUTER NETWORKING

 

UNIT-1

 

1.(a) Write difference between OSI and TCP/IP model. MARK:[10]

(b) Define three layers of X-25. MARK:[10]

OR

2.(a) Write a short note on TCP & UDP.MARK:[10]

(b) Compare ATM and Frame relay.MARK:[10]

 

UNIT-2

 

3.(a) Given an error free 64 kbps satellite channel which is used to send 512 byte data frames in one direction with very short acknowledgements coming back the other way.What will be the maximum throughput for window size of 1,7,15 and 127? MARK:[10]

(b) State various design issues for Data link layer.MARK:[10]

OR

4.(a) What is meant by bit stuffing ? Explain.MARK:[10]

(b) Draw and explain about the frame structure and various frame types in HDLC.MARK:[10]

 

UNIT-3

 

5.(a) What is need of minimum frame size ? If it is 64 byte,then calculate loss of bandwidth for 100 mbps Ethernet network ?MARK:[14]

(b) Define FDDI.MARK:[6]

OR

6.(a) How can you compare I-persistent CSMA and P-persistent CSMA? MARK:[10]

(b) Expain the MAC frame format. MARK:[10]

 

UNIT-4

 

7.(a) How many host per network in each IP address class can exist? Show some example. MARK:[8]

(b) Define the types of Routing algorithms. MARK:[12]

OR

8.(a) How can you compare IPv4 and IPV6 ? MARK:[10]

(b) What are unicast routing protocols ?MARK:[10]

 

UNIT-5

 

9.(a) How would you define congestion control and Q.S.?MARK:[10]

(b) What is the difference between IP addresses and port number ?MARK:[10]

OR

10.Write short note on the following :

(1) Virtual Terminal protocol

(2) H-323 layering

(3) SMTP

(4) DNS