Tcp gbn and sr 20 points compare gbn sr and tcp no delayed...

TCP, GBN, and SR (20 points) Compare GBN, SR, and TCP (no delayed ACK). Assume that the timeout values for all three protocols are sufficiently long such that 4 consecutive data segments with sequence number 1, 2, 3, 4 can be received by the receiving host (Host B) and their corresponding ACKs can be received by the sending host (Host A). Suppose Host A sends data segments to Host B, and the 2nd segment (sent from Host A) is lost. In the end, all 4 data segments have been correctly received by Host B.

Transcript

00:02 Hello students, the go back n, the go back n, go back n that is the gvn and selective and the selective repeat and the selective repeat that is that is the sr are the two automatic repeat request of they are the two they are the two automatic repeat request of a r q protocols used in the computer networks so they are used in the computer networks for for reliable data and transmission so these are the protocols both the protocols are used sliding window to control the flow of the data between the senders and the receiver so the first packet in the sender window is is lost before reaching the destination we can say the first the first packet the first packet in the in the sender window in the sender window size is lost before is lost before it is lost before reaching the destination reaching the destination reaching the destination as as they go back in as they go back in in this case the receiver will not acknowledge the packets of the first packet and the sender will will have a timeout for that packet so the sender will then it will then retransmit all the packets in its window starting from the first unacknowledged packet so for sr for sr we can say the receiver for the sr we can say the receiver will not acknowledge the receipt of the first packet and the sender will have the timeout for that packet so however in the sr only the one packet only the lost packet will be retransmitted not all the packets and other packets that have already been acknowledged will not be trans will be not be retransmitted the second is all transmitted packets reach the destination except the third one we can say all transmitted transmitted packets packets reached reached the destination reach the destination except except the first one except the except the third one except the third one so here we go back and it since they go back and has the cumulative acknowledgement schema the receiver will acknowledge only the receipt of the second packet the sender will have the timeout for the…

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