: A negative ACK; a response indicating that a message was not fully received, or that there was a problem with the message
character or message sent by a receiving modem to a sending modem to indicate that a data packet has arrived incomplete and must be re-sent (Computers, Telecommunications)
Negative acknowledgment, has been received incorrectly in some communication protocols A message that implies that data has been received incorrectly Also used as a "not ready" reply in some communication protocols
/nak/ [from the ASCII mnemonic for 0010101] interj 1 On-line joke answer to {ACK}?: "I'm not here " 2 On-line answer to a request for chat: "I'm not available " 3 Used to politely interrupt someone to tell them you don't understand their point or that they have suddenly stopped making sense See {ACK}, sense 3 "And then, after we recode the project in COBOL " "Nak, Nak, Nak! I thought I heard you say COBOL!"
(negative acknowledge character) (n ) A control code returned by a receiving station indicating that a station with an established connection has sent incorrect information
An "negative" acknowledgement (disapproval) from an authorized point of contact for a domain name record, contact record, or host record that a requested modification should not be completed When a modification request is received from a source that is not an authorized contact, the request will be rejected and a message will be sent to the listed contacts asking them to ACK (approve) or NAK (disapprove) the modification [see also: ACK (Acknowledge), Modification, Contact/Agent]