Glossary of Computer Terms

KEYWORD

DESCRIPTION

T1 Communications lines operating at 1.544M/sec.
T3 Communications lines operating at 45M/sec.
TAG A slang reference for commands that are part of HTML. See also HTML.
TAR (tape archive program) A UNIX-based program that creates packages of directory structures.
TCP (Transmission Control Protocol) The network protocol used by hosts on the Internet.
TCP/IP Transmission Control Protocol/Internet Protocol.
TELEVISION OR RADIO Any continuous wave form, as opposed to digital on/off transmissions.
TELNET A TCP/IP application that enables a user to log in to a remote device.
TERMINAL EMULATION Running an application that lets you use your computer to interface with a command-line account on a remote computer, as if you were connected to the computer with a terminal.
TERMINAL SERVER A network device that provides physical access for dumb terminals, usually using an abbreviated TCP/IP protocol to enable a dumb terminal to remotely log on.
TERMINATOR A resistor that must be on both ends of thick and thin Ethernet networks.
THREAD All messages in a newsgroup or mailing list pertaining to a particular topic.
THROUGHPUT The amount of data that can be transferred through a medium within a certain time period.
TOGGLE Alternate between two possible values.
TOKEN RING A lower layer connection method to control data traffic.
TOPOLOGY The configuration of network devices.
TRACEROUTE A utility that allows you to find out how many routers are between your host and another Internet host. See also hop-check.
TRAFFIC The information flowing through a network.
TRAFFIC A general term used to describe the amount of data on a network backbone.
TRANSCEIVER A network device required in baseband networks that takes a digital signal and puts it on the analog baseband medium. Transceivers can sense collisions.
TRANSMISSION CLASS 4 An OSI transport layer protocol similar to TCP. Often referred to as OSI TP4.
TRANSMISSION CONTROL BLOCK (TCB) A data structure that holds information about TCP and UDP connections.
TRANSMISSION CONTROL PROTOCOL (TCP) A transport layer protocol that is part of the TCP/IP protocol suite and provides a connection based, reliable data stream.
TRIVIAL FILE TRANSFER PROTOCOL (TFTP) A mechanism for remote logons similar to Telnet but that uses UDP as a transport layer protocol instead of TCP.
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