Discussion
The technique of temporarily delaying outgoing acknowledgements so that they can be hooked onto the next outgoing data frame is known as
Answer: B
Delaying an outgoing acknowledgement so that it travels on the next outgoing data frame is called piggybacking. It saves a separate frame and so makes better use of the channel, which is the point of the technique in data link and transport protocols. Bit stuffing inserts extra bits to keep a flag pattern out of the data, pipelining sends several frames before waiting for acknowledgement, and broadcasting sends a frame to all stations, so none of these describes attaching the acknowledgement to a data frame. The keyed answer is piggy backing.
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