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Flow Control and Error Control - I Starter Quiz-1

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Question 1

The minimum Hamming distance to CORRECT and DETECT K-bit of errors are respectively?

Question 2

Why do we require hamming codes?

Question 3

If the bandwidth of the line is 1.5 Mbps, RTT is 45 msec and packet size is 1 KB, then find the transmission delay?

Question 4

Consider GBN protocol having sender window size of 8. The minimum number of bits required for the sequence is _______.

Question 5

Select the Correct Statement:

S1: Go Back N ARQ supports both individual and cumulative acknowledgment.

S1: Both Stop and Wait ARQ and Go Back N ARQ accept only in order frames because the receiver window size is '1'.

Question 6

A channel has a bit rate of 8 Kbps and a propagation delay of 15 msec. The minimum frame size in stop and wait protocol that gives an efficiency of atleast 50% is ________. (in bits)

Question 7

Consider a system using Go-Back-N protocol over fiber link with bandwidth 1 Gbps and packet size 512 B. Propagation speed of fiber is 2 × 10⁸ msec with length 1 Km. Assume error-free and duplex communication with ACK packet size 64 B . Then the value of N that yields maximum utilization of sender is ________.

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GATE & PSU CS General

Jun 24GATE & PSU CS