What Does NAK Stand For?

NAK stands for Negative Acknowledge

NAK, or Negative Acknowledge, refers to a signal or message sent in communication protocols to indicate that a previously sent message or data packet was not received correctly. It serves as a request for retransmission, helping to ensure data integrity and reliable communication in various systems, including networking and telecommunications. NAK is often used in contrast to ACK (Acknowledge), which confirms successful message receipt.