nak

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Definitions of nak word

abbreviation Technical meaning of NAK negative acknowledgement 3
noun Definition of nak in Technology 1. (character) (NAK) The mnemonic for ASCII character 21. Sometimes used as the response to receipt of a corrupted packet of information. Opposite of acknowledgement. 2. (communications) (NAK) Any message transmitted to indicate that some data has been received incorrectly, for example it may have a checksum 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 ACK 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 ACK. 1
noun nak (computing): A negative ACK; a response indicating that a message was not fully received, or that there was a problem with the message. 0

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