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GATE CS 2022: Computer Network-4

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Question 1

In GO-BACK N ARQ and Stop and Wait ARQ, the receiver window size =1. Consider the two statements regarding both the protocols

S1: It accepts out of order frames.

S2: It accepts in order Frames.

Which of the following is true regarding given data for the protocols?

Question 2

Consider two computers A and B are connected through a network of 30 Mbps. Assume the distance between them is 3000 km and the signal propagation speed is same as the speed of light and the packet size is 12 KB. What is the minimum number of bits required for window to achieve 100% of utilization during Go Back-N and selective repeat protocol?

Question 3

Which of the following protocol pairs can be used to send and retrieve e-mails (in that order)?

Question 4

DHCP stands for

Question 5

In the congestion avoidance algorithm, the size of the congestion window increases ____________ until congestion is detected.

Question 6

Consider two hosts X and Y connected by a single direct link of rate 106 bits/sec. The distance between the two hosts is 10,000 km and the propagation speed along the link is 2 x 108 m/sec. Host X sends a file of 50,000 bytes as one large message to host Y continuously. Find the propagation delay of the link.



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Jul 7GATE & PSU CS