Download GTU BE/B.Tech 2019 Winter 8th Sem Old 181101 Data Communication And Networking Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 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 2019
Subject Code: 181101 Date: 25/11/2019

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) What is network topology? Explain different network topologies with
example and compare them.

07
(b) (I) Which of the OSI layers handles each of the following :
- Which layer provides logical addressing that router will use for path
determination
- Dividing the transmitted bit stream into frames.
- The Media access control sub layer resides in which sub layer ?
- Which layer segments and resembles data into data stream?
(II) Compare Packet Switching and Circuit Switching.
04





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Q.2 (a) Compare and contrast OSI and TCP/IP models. 07
(b) What are the different types of transmission media, explain in details. 07
OR
(b) What is the Public Switched Telephone System? Also explain details of PSTN
system.
07

Q.3 (a) List the Data Link Layer design issues. What is framing? List all methods used
for framing and explain any two methods used for framing in detail.
07
(b) What is the difference between error detection and error correction? Explain CRC
in detail.
07
OR
Q.3 (a) Explain Error control in stop and wait mechanism 07
(b) With the help of necessary diagram explain the working of CSMA/CD 07

Q.4 (a) Compare pure ALOHA and slotted ALOHA 07
(b) Explain the process for computing the class of Internet Protocol address 07
OR
Q.4 (a) Explain architecture and working of ATM. 07
(b) Explain and compare distance vector routing and link state routing algorithm 07

Q.5 (a) List the various duties of the transport layer and compare UDP and TCP 07
(b) Explain email architecture and services .Compare POP3 and SMTP 07
OR
Q.5 (a) Explain DNS in detail with example 07
(b) Write short note on RSA algorithm. 07

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