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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