Glossary 229
Glossary
The followin
lossary is a list of commonly used terms in this
uide.
Term Definition
10Base-T One of several adaptations of the Ethernet (IEEE 802.3)
standard for Local Area Networks (LANs). The 10Base-T
standard (also called Twisted Pair Ethernet) uses a twisted-pair
cable with a maximum len
th of 100 meters. The cable is
thinner and more flexible than the coaxial cable used for the
10Base-2 or 10Base-5 standards.
100Base-T A networkin
standard that supports data transfer rates up to
100 Mbps (100 me
abits per second). 100Base-T is based on
the older Ethernet standard. Because it is 10 times faster than
Ethernet, it is often referred to as Fast Ethernet. Officially, the
100Base-T standard is IEEE 802.3u. Like Ethernet, 100Base-T
is based on the CSMA/CD LAN access method.
CHAP Challen
e-Handshake Authentication Protocol. An
authentication scheme used by PPP servers to validate the
identity of the ori
inator of the connection upon connection or
any time later.
CRT Cathode-Ray Tube. A lar
e vacuum tube with a viewin
face in
which an electron beam is focused and controlled to form
characters and other ima
es. A CRT is the display you see on
the monitor you use with your terminal.
CTS Clear to Send. Control si
nal sent from the DCE. It indicates
that the DTE may send data. This si
nal is used in serial
connections.
DCE Data Communications Equipment. Devices that provide the
functions required to establish, maintain, and terminate a data
transmission connection, e.
., a modem.
DHCP Dynamic Host Confi
uration Protocol. A protocol for assi
nin
dynamic IP addresses to devices on a network.
DNS Domain Name Service. A
eneral-purpose distributed,
replicated, data query service chiefly used on the Internet for
translatin
host names into Internet addresses.
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