Topic: Computer Networks

(Write your answer clearly and neatly)

3. Pipelined reliable data transfer 1 Recall the Go-back-N protocol Does this protocolhave atimer for each unacknowledgedpacket? Where and when the timer is set? a. b. c. When atimer expires, what happens? 2) Recall the Selective Repeat protocol a. b. Does this protocolhave a timer for each unacknowledgedpacket? When an acknowledgement arrives for the oldest unacknowledgedpacket, what happens? c. When atimer expires, what happens