| negative acknowledge 1. (NAK) The for character 21. Sometimes used as the response to receipt of a corrupted of information. Opposite of . 2. (NAK) Any message transmitted to indicate that some data has been received incorrectly, for example it may have a or message length error. A NAK message allows the sender to distinguish a message which has been received in a corrupted state from one which is not received at all. An alternative is to use only messages, in which case the non-receipt of an ACK after a certain time is counted as a NAK but gives no information about the integrity of the communications channel. See also . (1997-01-07) |
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