(1) A computer that is connected to a network and provides an access point to that network. The host can be a client, a server, or both a client and server simultaneously. See also server, client.
(2) In a cooperative processing environment, the system running the server program with which the CoOperative Development Environment/400 session communicates.
(3) In TCP/IP, any system that has at least one Internet address associated with it.
(4) In performance profiling, a machine that owns processes that are being profiled. See also server.
(5) The controlling or highest-level system in a data communications configuration.