Hemchandracharya North Gujarat University 2006 B.Sc Computer Science 301: Data Communication & Networking - Question Paper

AA-3601 Seat No.______
3rd Year M. Sc. (CA & IT) exam
March / April – 2006
301: Data Communication & Networking



Time : three Hours] Total Marks: 70



one (a) Write short note: TCP/IP protocols suite. 6
(b) define connection-orinted and connectionless 4
services and differentiate ranging from every other.

OR

one (a) Draw OSI reference model and define a six
functions of every layer.
(b) Write short notes : 4
(i) Social problems of Computer network.
(ii) Eathernet.


2 ans the subsequent ques. : ( any four) 16
(a) discuss fiber-optics and light transmission
through fiber.
(b) Explain: twisted pair copper network and
kinds of twisted pair.
(c) Draw and define Electromegnetic spectrum
for wirless communication.
(d) What is Geostationary Earth Orbit? describe
speed bandwidth and issue for various
band.
(e) describe a typical circuit route of telephone for
A medium distance.




one [Contd…



3 (a) Design problems of Data-link layaer. 3
(b) discuss subsequent ques. : (any 4 ) 9
(i) Selective Repeate Protocol
(ii) Go back N Protocol
(iii) Stop and wait protocol
(iv) 1 bit sliding protocol.


4 ans the subsequent ques. : (any four) 16
(a) What is a CSMA protocol? define CSMA
with collision Detection.
(b) Draw and desribe IP datagram.
(c) Define terms :
Router, Repeater, Hub, Bridge
(d) What is subnet? describe a classes of IP address.
(e) Draw and define UDP header.


five (a) Write Short notes : (any three) 12
(i) Distance Vector Routing Algorithm
(ii) Multicast Routing Algorithm
(iii) BGP
(iv) Implementation of connectionless Services.

(b) Write Short note : MIME 4

OR

(b) What is DNS? Why it is require ? 4

________________

Earning:   Approval pending.