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ACK

Updated: 02/07/2022 by Computer Hope
Acknowledgement abbreviated as ACK

Short for acknowledgment, ACK is an answer given by another computer or network device indicating it acknowledged the SYN/ACK or other request sent to it.

Note

If the signal is not received correctly, a NAK (negative acknowledgment) is sent.

Related information

  • Network and network card help and support.
  • Computer security help and support.

Computer abbreviations, Network terms, SYN

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