GATE | GATE-CS-2006 | Question 46

Station A needs to send a message consisting of 9 packets to Station B using a sliding window (window size 3) and go-back-n error control strategy. All packets are ready and immediately available for transmission. If every 5th packet that A transmits gets lost (but no acks from B ever get lost), then what is the number of packets that A will transmit for sending the message to B?
(A) 12
(B) 14
(C) 16
(D) 18


Answer: (C)

Explanation: See question 3 of https://www.geeksforgeeks.org/computer-networks-set-11/

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