Download GTU BE/B.Tech 2018 Winter 8th Sem Old 181101 Data Communication And Networking Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 8th Sem Old 181101 Data Communication And Networking Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VIII (OLD) EXAMINATION ? WINTER 2018
Subject Code: 181101 Date: 19/11/2018

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) Explain the OSI reference model with the diagram. Also enlist its critique in various
applications.
07
(b) Explain the four levels of addresses in TCP/IP protocols. 07

Q.2 (a) Explain HLDC Protocol with modes of operation, Frame structure and Frame types. 07
(b) Explain ATM Reference Model in detail. 07
OR
(b) Explain the Go-Back-N and selective repeat protocols in brief. Comment on the
effects of errors caused in communication due to different window sizes.
07

Q.3 (a) What is the major difference between error detecting and error correcting codes?
Show how Hamming code is used to correct burst errors.
07
(b) Explain Bluetooth protocol architecture and list its application. 07
OR
Q.3 (a) Write the functions of Medium Access Control sub layer. And Compare pure ALOHA
and slotted ALOHA.
07
(b) What is the Public Switched Telephone System? Also discussed in details working of
PSTN system using diagram.
07

Q.4 (a) Differentiate the IPv4 and IPv6 in detail. 07
(b) Write a short note on services provided by the TCP at Transport layer. 07
OR
Q.4 (a) Write a short note on HTTP. 07
(b) Explain the Transport Service Primitives. Explain using diagram, connection
establishment and release using these primitives.
07

Q.5 (a) What is Domain Name System? Describe in details the Recourse records and Name
server for the Domain Name System.
07
(b) What is cryptography? Explain symmetric key algorithm in detail. 07
OR

Q.5 (a) Discuss the social issues connected with network security. 07
(b) What is congestion? Write congestion prevention policies for network and transport
layers.
07



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