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GUJARAT TECHNOLOGICAL UNIVERSITY
SEMESTER-IV(NEW) — EXAMINATION - SUMMER 2019
Subject Code:2140709 Date:13/05/2019
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Subject Name: Computer Networks
Time:02:30 PM TO 05:00 PM Total Marks: 70
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Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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Q.1 (a) What do you mean by Client-Server Architecture? Discuss its advantages and disadvantages. [03]
(b) Define and explain following terms in brief: [04]
(1) Delay (i1) Throughput (ii1) Loss (iv) Protocol
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(c) Differentiate IP Stack and OSI Reference Model with suitable diagram. [07]
Q.2 (a) What is congestion? List the approaches congestion control. [03]
(b) Differentiate between Connection-Oriented and Connection-Less Services [04]
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(c) Discuss your understanding of a Network Topology? Explain different types of Network Topologies. [07]
OR
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(c) What is Routing Loop? Discuss Routing Loop Avoidance Techniques. [07]
Q.3 (a) Write short note on Domain Name Server (DNS). [03]
(b) What is Socket? Explain its importance at Transport Layer Protocols. [04]
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(c) Explain Connection Establishment and Connection Release in Transport Protocols. [07]
OR
Q.3 (a) Discuss the principles of Reliable Data Transfer. [03]
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(b) What is HTTP? Compare its persistent and non-persistent types with request-response behavior of HTTP. [04]
(c) Explain Distance Vector Routing Algorithm. [07]
Q.4 (a) Explain the working of Sliding Window Protocol. [03]
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(b) Compare IPv4 and IPv6. [04]
(c) What is a Virtual Circuit Network? How it differs from circuit switching network. Discuss with example. [07]
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OR
Q.4 (a) Explain Ethernet header with suitable diagram. [03]
(b) What is IP address and what do you mean by Subnet? Enlist different IP address Classes. [04]
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(c) Differentiate between Multiplexing and Demultiplexing with suitable example. [07]
Q.5 (a) Explain CRC with example. [03]
(b) How TDM and FDM are useful in Channel Partitioning? [04]
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(c) Discuss slotted ALOHA protocol in detail. [07]
OR
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Q.5 (a) Discuss the parity checks for error detection in data transfer. [03]
(b) Differentiate broadcast and multicast with their functionalities. [04]
(c) Explain IPv4 Datagram Format in detail with suitable diagram. [07]
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