Download GTU BE/B.Tech 2019 Summer 7th Sem New 2171008 Data Communication And Networking Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 7th Sem New 2171008 Data Communication And Networking Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VII(NEW) EXAMINATION ? SUMMER 2019
Subject Code:2171008 Date:18/05/2019

Subject Name:Data Communication and Networking

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.


Q.1 (a) Briefly explain uses of computer networks. 03
(b) What is data communication? List and explain fundamental characteristics of
data communication system.
04
(c) Explain OSI reference model in detail. 07

Q.2 (a) Briefly explain co-axial cable with diagram. 03
(b) What is framing. List and explain types of framing. 04
(c) Write short note on digital subscriber line. 07
OR
(c) Explain Go-Back-N ARQ using neat and clean flow diagrams. 07

Q.3 (a) Explain fundamental difference between CSMA/CA and CSMA/CD. 03
(b) Comparatively explain vulnerable time and throughputs of pure and slotted
ALOHA.
04
(c) Write short note on standard Ethernet. 07
OR
Q.3 (a) What is Gateway? 03
(b) Explain addressing mechanism in IEEE 802.11 standard for wireless LAN. 04
(c) Explain Bluetooth layers in detail. 07

Q.4 (a) Write full forms: ARP, RARP, DHCP, DNS, ISDN and ATM. 03
(b) Define: Repeater, Hub, Bridges and Router. 04
(c) Explain UDP operation. Also enlist the uses of UDP. 07
OR
Q.4 (a) Explain TCP connection establishment process with neat figure. 03
(b) Briefly explain virtual LAN. 04
(c) Explain ICMP error reporting in detail. 07
Q.5 (a) Explain duties performed by network layer. 03
(b) Explain process of public key distribution. 04
(c) Write short note on Voice Over IP. 07
OR

Q.5 (a) Enlist and explain services provided by network security. 03
(b) Comparatively explain symmetric and asymmetric key cryptography. 04
(c) Explain in detail: Digital signature. 07


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