CUSAT Exam Paper Computer Networks Oct 2000
B.TECH. DEGREE VII SEMESTER (SUPPLEMENTARY) EXAMINATION IN
ELECTRONICS AND COMMUNICATION ENGINEERING, OCTOBER 2000
EC 702 COMPUTER NETWORKS
Time: 3 Hours Maximum Marks: 100
(Answer all questions)
(All questions carry eaual marks)
|I.||(a)||What is a statistical multiplexer? What is the advantage of using this over other multiplexers?||(10)|
|(b)||Explain CSMA/CD network standard.
|II.||(a)||What is a modem? Explain one serial communication standard.||(10)|
Compare the merits and demerits of the transmission media (i) Copper wire (ii) Optical Fibre
|III.||(a)||Explain two reasons for using layered protocols.||(8)|
|(b)||Discuss the various applications of computer networks.
|IV.||(a)||Discuss the OSI Reference model explaining the functions of each layer.||(12)|
|(b)||Briefly explain the structure of HDLC Protocol.||(8)|
|V.||(a)||What is packet switching? What are the advantages of this over circuit switching?||(1)|
|(b)||What are the common carrier facilities available?
|VI.||(a)||Explain the principle and architecture of ISDN.||(12)|
|(b)||Distinguish between connection oriented and connectionless data transmission.||(8)|
|VII.||(a)||What are the factors considered in the design of computer networks?||(1)|
Explain the use of serial data analyser.
What you mean by network testing?
|(b)||Explain hybrid modulation.||(1)|
|IX.||(a)(b)||Briefly explain the different queuing characteristics.Discuss the performance of a multiserver system with a number of servers in parallel.
|X.||Write short notes on:(i) Gateways
(iii) Matrix switch
(iv) Digital PBX