TRANSPORT LAYER
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -Go back N uses cumulative acknowledgements. In Go back N, Receiver maintains an acknowledgement timer. Each time the receiver receives a new frame, it starts a new acknowledgement timer.
Detailed explanation-2: -TCP uses a cumulative acknowledgment scheme in which received segments that are not at the left edge of the receive window are not acknowledged. This forces the sender to either wait a roundtrip time to find out about each lost packet, or to unnecessarily retransmit segments which have been correctly received.
Detailed explanation-3: -Working Principle Go – Back – N ARQ provides for sending multiple frames before receiving the acknowledgment for the first frame. The frames are sequentially numbered and a finite number of frames. The maximum number of frames that can be sent depends upon the size of the sending window.
Detailed explanation-4: -N specifies the size of the sender’s window in Go-Back-N, while the size of the receiver’s window is always 1. It ignores the corrupted frames and just discards them. It rejects frames that are out of sequence and discards them. More items