NCP (disambiguation)

• NCP (ARPANET) the host-to-host protocol of the ARPANET, replaced by Transmission Control Protocol in the Internet Protocol Suite
• NCP (SNA)‎ the operating system in an IBM communications processor (e.g., 3705, 3725) supporting Systems Network Architecture (SNA)
• NCP (DECnet) the command interface to the networking system software in computers running the DECnet software

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