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Glossary
TCP/IP Transmission Control Protocol/Internet Protocol. A standard set
of protocols that govern the basic workings of the Internet. It
was developed by DARPA and implemented in 1982. TCP/IP
encompasses both network layer and transport layer protocols
(in the OSI model). While TCP and IP specify two protocols at
specific protocol layers, TCP/IP is often used to refer to the
entire DOD protocol suite based upon these, including Telnet,
FTP, UDP and RDP.
Telnet Telnet is the login and terminal emulation program for
Transmission Control Protocol/Internet Protocol (TCP/IP)
networks such as the Internet. Its primary function is to allow
users to log into remote host systems.
Terminal emulation Programs that allow a WBT to act like a particular brand or type
of terminal. The WBT thus appears as a terminal to the host
computer and accepts the same escape sequences for
functions such as cursor positioning and clearing the screen.
Thin-client A low-cost computing device that works in a server-centric
computing model. Thin clients typically do not require
state-of-the-art, powerful processors and large amounts of RAM
and ROM because they access applications from a central
server or network. Thin clients can operate in a Server-based
Computing environment.
Timeout A time interval within which certain operations must occur; for
example, the time allotment for the terminal to connect to a login
host. After the timeout, the process can either be repeated or
discontinued.
Total Cost of Ownership (TCO) A model that helps IT professionals understand and manage the
budgeted (direct) and unbudgeted (indirect) costs incurred for
acquiring, maintaining and using an application or a computing
system. TCO normally includes training, upgrades, and
administration as well as the purchase price. Lowering TCO
through single-point control is a key benefit of Server-based
Computing.
Touch screen A type of display screen that has a touch-sensitive transparent
panel that can sense when someone is touching it, and is able
to furnish a computer with precise information as to exactly
where on the screen the touch occurred. Touch screens are
used with software that uses the information provided by the
screen touch to respond to user requests.