Reg Now Name:

APJ ABDUL ۱۷۸۷۸۷۰0۳۴ 4)6۸۷ UNIVERSITY

Second Semester MCA (2 Year) Degree Examination July 2021

Course Code: 20MCA104
Course Name: ADVANCED COMPUTER NETWORKS

Max. Marks: 60 Duration: 3 Hours
PART A
Answer all questions, each carries3 marks. Marks
‏کے‎ What is protocol layering? What are the reasons for using Layered Architecture 10 == ‏(ذ)‎
‎Computer Networks?
What is the role of SMTP in E-Mail message transfer? (3)
Demonstrate the significance of sequence numbers in stop and wait ARQ. (3)
Explain the TCP segment header format. (3)
Compare datagram network with virtual circuit network. (3)
Explain multicast routing. (3)

Explain how parity is used to achieve error detection in data communication.

Explain the working of CSMA/CD?

Explain Network Address Translation.

What is VPN? List different types of VPN. (3)

PART B
Answer any one question from each module. Each question carries 6 marks.
Module 1
Explain the working of File Transfer Protocol (FTP) and its features. (6)

OR
12 Explain the two predominant network architecture used in modern network (6)

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applications with diagrams.

Module II
2 Outline in detail the two well-known data transport protocols provided by the (6)
Internet transport layer.
OR
14 Explain why TCP congestion control is referred as Additive increase (6)

Multiplicative decrease form of congestion control.

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