Wednesday, January 19, 2022

Dr.A.P.J.Abdul Kalam University BE V SEM ALL BRANCH Computer Networks [IT-503] Dec - 2020 Question Paper

Dr.A.P.J.Abdul Kalam University

Bachelor of Engineering

Fifth Semester Main Examination, Dec-2020

Computer Networks [IT-503]

Branch: IT

Time: 3:00 Hrs Max Marks 70

Note: 1. Attempt any five questions out of eight.

2. All question carry equal marks.

Q.1 (a) What is computer network and how it is different from distributed system?

(b)State the seven layers of the OSI model. Describe the function of each layer.

Q.2 (a) Explain sliding window protocol. Define Go-back-N protocol in detail.

(b) Explain the design issues of network layer.

Q.3 (a) Explain the difference between TCP and UDP protocols.

(b) How does CSMA/ CD differ from CSMA/CA?

Q.4 (a) What is difference between Slotted aloha and Pure aloha?

(b) What is queuing theory? Explain the queuing system M/M/1.

Q.5 (a) Write any two differences between connection oriented and connectionless service

(b) Explain the main features of transmission control protocol.

Q.6 Write a short note on:-

(i) ICMP (ii) DHCP (iii) ARP and RARP

Q.7 (a) Briefly explain the following:-

(i) SDLC (ii) Spanning tree bridges

(b) How adaptive tree walk protocol works?

Q.8 Write short note on:-

(i) HTTP (ii) DNS (iii) FTP

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