Dr. A.P.J. Abdul Kalam University BE VI SEM (CS) Computer Networking [CS-604] June 2021 Question Paper

Dr. A.P.J. Abdul Kalam University

Bachelor of Engineering

Sixth Semester Examination, June-2021

Computer Networking [CS-604]

Branch-CS

Time: 3:00 Hrs Max Marks 70

Note: (i) Attempt any five questions.

(ii) Answer should be precise & to be point only.

(iii) Assume suitable data if necessary & state them clearly.

Q1. (a) What is computer network and how it is different from distributed

system?

(b) Write any two differences between connection oriented and

connectionless service.

Q.2 (a) What are the advantages of internet TCP/IP model over OSI model?

 (b) State the 7 layers of the OSI model in the correct order and briefly

describe the function of each layer.

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

example of an application that uses TCP and an application that uses UDP.

(b) Explain sliding window protocol? Define Go-back N protocol in detail?

Q.4 (a) What is difference between slotted ALOHA and pure ALOHA?

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

Q.5 (a) What are the functions performed by data link layer? Discus flow and

error control protocols in data link layer.

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

Q.6 (a) How adaptive tree walk protocol works?

(b) Explain the mechanism of stop and wait ARQ?

Q.7 (a) Explain IPv4 header format with neat sketch and difference between IPv4

and IPv6 protocol.

(b) Write a short note on- (i) HTTP (ii) DNS (iii) FTP

Q.8 Write a short note on following:

(i) ICMP (ii) DHCP

(iii) ARP (iv) RARP

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