If the sender does not receive the receiver’s acknowledgement, then all the frames available in the current window will be retransmitted. In this, if any frame is manipulated or lost, all subsequent frames have to be sent again.įor example, in GO- Back –N, the N is the sender’s window size if it is GO-Back-5, the sender will send frame 1 to 5 before receiving the knowledge of frame 1.Īll the frames are numbers to deal with the most and duplicate frames. It is a data link layer protocol that helps a sliding window method. ![]() ![]() Go-Back-N Automatic Repeat Query (ARQ) protocol is also referred to as Go-Back-N Automatic Repeat Request. The objective of the sliding window technique is to use the sequence numbers to avoid duplicate data and to request missing data.įollowing are the two types of Sliding Window Protocol − Go Back-n Protocol In the sliding window technique, each data packet (for most data link layers) and byte (in TCP) includes a unique consecutive sequence number used by the receiving computer to place data in the correct order. ![]() A sliding window is a method for controlling sending data packets between two network devices where dependable and sequential delivery of data packets is needed, such as using the Data Link Layer ( OSI model) or Transmission Control Protocol (TCP). A sliding window is also known as windowing.
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