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Q. Illustrate Go Back - N protocol?
Go Back - N
- Sender window size < 2m
- Receiver window size = 1
- Why the names go back- N?
- When the frame is spoilt the sender goes back and sends a set of frames starting from the last one ACKn'd
- The number of retransmitted frames is N
GRP uses a composite metric complete up of bandwidth and delay by default, it updates each 60 Seconds and will trigger an update if the topology changes.
Drawback of Repeaters. Repeater has no filtering capability as it forwards every frame. Repeater shell be placed at accurate distance before actual signal becomes
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