Glossary 235
Stop bit In asynchronous transmission, the last bit of any
iven
character, used to alert the receivin
system that transmission
of the character is complete.
TCP/IP Transmission Control Protocol/Internet Protocol. TCP/IP was
developed by DARPA for Internet workin
and 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, includin
Telnet, FTP, UDP
and RDP.
Telnet Telnet is the lo
in and terminal emulation pro
ram for
Transmission Control Protocol/Internet Protocol (TCP/IP)
networks such as the Internet. Its primary function is to allow
users to lo
into remote host systems.
Terminal emulation Pro
rams 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 positionin
and clearin
the screen.
Thin-client A low-cost computin
device that works in a server-centric
computin
model. Thin clients typically do not require
state-of-the-art, powerful processors and lar
e amounts of RAM
and ROM because they access applications from a central
server or network. Thin clients can operate in a Server-based
Computin
environment.
Timeout A time interval within which certain operations must occur; for
example, the time allotment for the terminal to connect to a lo
in
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 mana
e the
bud
eted (direct) and unbud
eted (indirect) costs incurred for
acquirin
, maintainin
and usin
an application or a computin
system. TCO normally includes trainin
, up
rades, and
administration as well as the purchase price. Lowerin
TCO
throu
h sin
le-point control is a key benefit of Server-based
Computin
.
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