| E-MAIL |
An electronic
message delivered from one computer user to another. Short for electronic
mail. |
| E-MAIL
ADDRESS |
An address
used to send e-mail to a user on the Internet, consisting of the user name
and host name (and any other necessary information, such as a gateway machine).
An Internet e-mail address is usually of the form username@hostname. |
| EFFECTIVE
GID |
The group
identifier of the current process, which may have been changed from the
original GID by various means. |
| EFFECTIVE
UID |
The user
identifier of the current process, which may have been changed from the
original UID by various means. |
| EGREP |
A UNIX
pattern matching utility that finds matching patterns in text files. |
| EMOTICON |
An ASCII
drawing such as :-) (look at it sideways) used to help indicate an emotion
in a message. Also called emoticon. |
| EMULATION |
A program
that simulates another device. For example, a 3270 emulator emulates an
IBM 3270 terminal, sending the same codes as the real device would. |
| ENCAPSULATION |
Including
an incoming message into a larger message by adding information at the front,
back, or both. Encapsulation is used by layered network protocols. With
each layer, new headers and trailers are added. |
| ENCRYPTION |
The process
of scrambling a message so that it can be read only by someone who knows
how to unscramble it. |
| ENTERPRISE
NETWORK |
A generic
term usually referring to a Wide Area Network providing services to all
of a corporation's sites. |
| ENVIRONMENT |
Every
process has a number of variables associated with it, these are described
as the environment. |
| ETHERNET |
A type
of local area network hardware. Many TCP/IP networks are ethernet based. |
| ETHERNET |
A data
link level protocol comprising the OSI model's bottom two layers. It is
a broadcast networking technology that can use several different physical
media, including twisted pair cable and coaxial cable. Ethernet usually
uses CSMA/CD. TCP/IP is commonly used with Ethernet networks. |
| ETHERNET
ADDRESS |
A 48 that
uniquely identifies the Ethernet Network Interface Card (NIC) and hence
the device the card resides in. |
| ETHERNET
MELTDOWN |
A slang
term for a situation where an Ethernet network becomes saturated. The condition
usually persists for only a short time and is usually caused by a misrouted
or invalid packet. |
| EXPIRE |
Remove
an article from a UseNet newsgroup after a specified interval. |
| EXTENDED
BINARY CODED DECIMAL INTERCHANGE CODE |
(EBCDIC)
An alternative to ASCII used extensively in IBM machinery. Some other vendors
use it for mainframes. EBCDIC and ASCII are not compatible but are easy
to convert between. |
| EXTERIOR
GATEWAY PROTOCOL |
(EGP)
A protocol used by gateways to transfer information about devices that can
be reached within their autonomous systems. |