The Gateway to Computer Science Excellence
First time here? Checkout the FAQ!
x
+1 vote
82 views
Consider the sliding window protocol used at transport layer to transfer the segments, the receiver sends “ACK K + 1” when it receives a packet with sequence number “K” and window size is denoted by “W”. Assume the sender’s packets start with sequence number 1. Which of the following is correct about sliding window protocol?

(A) Between two ACK packets, the sender will never send more than one packet

(B) The sender must retransmit any packets for every single duplicate ACK it receives.

(C) Any new (previously unsent) packet with sequence number greater than “W” is sent by sender iff a new (previously unseen) ACK arrives.

(D) None of the above
asked in Computer Networks by (83 points) | 82 views

1 Answer

0 votes
option D seems correct

for option (A)-sender can send more than one packet in case of the cumulative acknowledgement.

For option (B)-its false,in case of packet lost ..three duplicate acknowledgements are there and sender retransmit only one packet

for option (c)-its false,due to packet loss (it was unsent )if previous (not new) acknowledgement arrives then that packet can be sent.
answered by Active (3.2k points)
edited by
0
Can you explain the answer a bit

Related questions



Quick search syntax
tags tag:apple
author user:martin
title title:apple
content content:apple
exclude -tag:apple
force match +apple
views views:100
score score:10
answers answers:2
is accepted isaccepted:true
is closed isclosed:true

37,963 questions
45,466 answers
131,322 comments
48,378 users