GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-IV (OLD) EXAMINATION - WINTER 2018
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Subject Code: 141601 Date: 28/11/2018
Subject Name: Data Communication And Networking
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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Q.1 (a) Explain the OSI model for networking in brief. [07]
(b) Define topology. Explain any two topologies with its advantages and disadvantages. [07]
Q.2 (a) Explain Guided Transmission Media Such As Twisted Pair, Coaxial Cable, & Fiber Optics. [07]
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(b) Differentiate between Packet Switching, Circuit Switching & Message Switching. [07]
OR
(b) List out the applications of multiplexing. Explain FDM in detail. [07]
Q.3 (a) What is error detection? List various methods of error detection and explain any two of them in brief. [07]
(b) Differentiate between IPv4 Address and IPv6 Address. [07]
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OR
Q.3 (a) Explain Cyclic Redundancy Check with example. [07]
(b) Explain GO Back N & Selective Repeat Protocol. [07]
Q.4 (a) Explain the frame relay in details. [07]
(b) Explain Bridge, Hub, Router & Gateway. [07]
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OR
Q.4 (a) Write a short note on Leaky Bucket Algorithm. [07]
(b) Explain Network Layer Design Issues. [07]
Q.5 (a) Explain three way handshake process with suitable diagram. [07]
(b) Define routing in communication: Explain distance vector routing algorithm with example. [07]
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OR
Q.5 (a) Explain the working of electronic mail protocols SMTP, IMAP and POP3 in brief with suitable diagram. [07]
(b) Explain types of transmission impairment in detail. Also discuss Shannon capacity. [07]
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