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GATE 2024 Computer Network Foundation Quiz 75
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Question 1
A channel has a bit rate of 20 kbps and a propagation delay of 200 ms. What is the frame size required to transmit in order to give an efficiency of 50%? (in bytes)
Question 2Multiple Correct Options
Suppose we are designing a sliding Window Protocol (SWP) for a 1-Mbps link (point to point) to a stationary satellite revolving around the earth at 6×104 km altitude. Assume that each frame carries 1kB of data and the speed of light is 3×108 m/s. Then find the number of bits needed for the sequence number field if RWS =1.
Question 3
The message 100011011 is to be transmitted using the CRC polynomial
x3 + x2 + 1 to protect it from errors. The message that should be transmitted is _____.
Question 4
Which of the physical connection is the fastest for transmission of data signal?
Question 5
Consider the Go Back N protocol with a sender's window size of 4. Suppose at time 't', the next in order packet the receiver is expecting has a sequence number of 15. Assume that the medium does not reorder messages. What are the possible sets of sequence numbers inside the sender's window at time 't’? [Assume that the sender has already received the ACK.]
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May 27GATE & PSU CS