Download GTU BE/B.Tech 2018 Winter 4th Sem New 2140709 Computer Networks Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 4th Sem New 2140709 Computer Networks Previous Question Paper

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1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?IV (NEW) EXAMINATION ? WINTER 2018
Subject Code:2140709 Date:28/11/2018

Subject Name:Computer Networks

Time: 02:30 PM TO 05:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.


MARKS

Q.1 (a) Explain following Terms:
1. Propagation Delay. 2. Super netting. 3. Tunneling.
03
(b) Explain Physical Address, IP address, Port Address in brief. 04
(c) Explain functionality of Bridge, Hub, Switch, Router, and Gateway. 07

Q.2 (a) What is topology? Explain star topology in brief. 03
(b) What is network? Explain in brief LAN and MAN. 04
(c) Draw the layered architecture of OSI reference model and write the at least two
services provided by each layer of the model.
07
OR
(c) Discuss transport layer multiplexing and demultiplexing concepts. 07
Q.3 (a) What is client server architecture? Explain merits and demerits of it. 03
(b) Write a short note on CRC. 04
(c) What do you mean by congestion and overflow? Explain the slow-start
component of the TCP congestion-control algorithm
07
OR
Q.3 (a) Draw and explain Ethernet header. 03
(b) How UDP checksum id calculated? Explain it with example. 04
(c) Explain TCP segment structure and justify the importance of its field values. 07
Q.4 (a) What is role of DNS (Domain Name Server) in internet? 03
(b) Give difference between flow control verses Congestion Control 04
(c) Explain layered architecture of TCP/IP model and write service provided by at
least two layer of the model.
07
OR
Q.4 (a) Give difference between connection oriented and connection less services. 03
(b) Differentiate Broadcast and multicast with their functionality. 04
(c) Explain IPv4 datagram format and importance of each field 07
Q.5 (a) Discuss parity check for error detection in data transfer. 03
(b) Compare TCP and UDP. 04
(c) Explain distance vector routing algorithm. 07
OR

Q.5 (a) Explain CSMA/CD Protocol 03
(b) Differentiate between IPv4 and IPv6. 04
(c) Explain Link-State routing algorithm. 07

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