ACK

ACK can refer to:

a packet used in the Transmission Control Protocol to acknowledge receipt of a packet, and the basis of TCP's reliability;
the "Acknowledgement" control character (code 0x06) in ASCII;
the IATA airport code for Nantucket Memorial Airport;
an interjection made popular in the U.S. by Bill the Cat from Bloom County.

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Categories: Disambiguation | TLAs