Abbreviation Full name Explanation
TCP/IP Transmission Control
Program/Internet
Protocol
Suite of programs for
network communication.
TCP/IP can be installed
on almost every existing
operating system, but the
supported functions vary
between operating
systems. TCP/IP consist
of a base TCP program
and various other
programs providing
support for e.g. LPD,
Telnet or BootP.
VTAM Virtual TeleAccess
Method
IBM network
communcation program.
VTAM is used to connect
printers and terminals to
OS/390 (MVS) and VM
systems.
VM Virtual Machine IBM operating system for
mainframes. OS/390
(MVS) and other
operating systems can
run under control of VM.
WAN Wide Area Network Usually Coax and Twinax
networks. Today it is also
used for larger Token
Ring and Ethernet
networks and/or Router
base networks.
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