E
EFI
EFI system
partition
On Itanium-based
computers, a portion on a GUID partition table (GPT) disk that is
formatted with the FAT file system and contains the files necessary to
start the computer. Every Itanium-based computer must have at least one
GPT disk with an EFI system partition. The EFI system partition serves the
same purpose as the system volume found on x86-based
computers.
embedded
object
Information created in
another program that has been pasted inside your document. When
information is embedded, you can edit the information in the new document
using toolbars and menus from the original program.
To edit the embedded
information, double-click it and the toolbars and menus from the program
used to create the information appear. Embedded information is not linked
to the original source. If you change information in one place, it is not
updated in the other.
emulated local area network
(ELAN)
A logical ATM network
that emulates the services of an Ethernet or Token Ring
LAN.
enable
To make a device
functional. For example, if a device in your hardware configuration
settings is enabled, the device is available for use when your computer
uses that hardware configuration.
encapsulated PostScript (EPS)
file
A file that prints at the
highest possible resolution for your printer. An EPS file may print faster
than other graphical representations. Some Windows-based and
non-Windows-based graphical programs can import EPS
files.
encrypted
password
A password that is
scrambled. Encrypted passwords are more secure than plaintext passwords,
which are susceptible to network sniffers.
Encrypting File System
(EFS)
A feature in this version
of Windows that enables users to encrypt files and folders on an NTFS
volume disk to keep them safe from access by
intruders.
encryption
The process of disguising
a message or data in such a way as to hide its
substance.
enhanced small device interface
(ESDI)
A standard that can be
used with high-capacity hard disks, floppy disk drives, and tape drives to
allow these devices to communicate with a computer at high
speeds.
environment
variable
A string consisting of
environment information, such as a drive, path, or file name, associated
with a symbolic name that can be used by Windows. You use System in
Control Panel or the set command from the command prompt to define
environment variables.
error
detection
A technique for detecting
when data is lost during transmission. This allows the software to recover
lost data by notifying the transmitting computer that it needs to
retransmit the data.
Ethernet
An IEEE 802.3 standard
for contention networks. Ethernet uses a bus or star topology and relies
on the form of access known as Carrier Sense Multiple Access with
Collision Detection (CSMA/DC) to regulate communication line traffic.
Network nodes are linked by coaxial cable, fiber-optic cable, or by
twisted-pair wiring. Data is transmitted in variable-length frames
containing delivery and control information and up to 1,500 bytes of data.
The Ethernet standard provides for baseband transmission at 10 megabits
(10 million bits) per second.
event
Any significant
occurrence in the system or an application that requires users to be
notified or an entry to be added to a log.
Event Log
service
A service that records
events in the system, security, and application logs. The Event Log
service is located in Event Viewer.
event
logging
The process of recording
an audit entry in the audit trail whenever certain events occur, such as
services starting and stopping, or users logging on and off and accessing
resources. You can use Event Viewer to review AppleTalk network
integration events as well as Windows events.
Event
Viewer
A component you can use
to view and manage event logs, gather information about hardware and
software problems, and monitor security events. Event Viewer maintains
logs about program, security, and system events.
everyone
category
In the Macintosh
environment, one of the user categories to which you assign permissions
for a folder. Permissions granted to everyone apply to all users who use
the server, including guests.
expanded
memory
Type of memory that can
be added to IBM personal computers. The use of expanded memory is defined
by the Expanded Memory Specification (EMS), which supports memory boards
containing RAM that can be enabled or disabled by
software.
expansion
slot
A socket in a computer,
designed to hold expansion boards and connect them to the system
bus.
expire
interval
For DNS, the number of
seconds that DNS servers operating as secondary masters for a zone will
use to determine if zone data should be expired when the zone is not
refreshed and renewed.
explicit
permissions
Permissions on an object
that are automatically assigned when the object is created, or
specifically assigned or changed by the owner of the
object.
express
message
For Message Queuing, a
message that uses fewer resources and is faster than a recoverable
message. However, because express messages are mapped to memory, they are
lost if the computer storing them fails.
extended
characters
Any of the 128 additional
characters in the extended ASCII (8-bit) character set. These characters
include those in several non-English languages, such as accent marks, and
special symbols used for creating pictures.
extended
memory
Memory beyond one
megabyte in 80286, 80386, 80486, and Pentium
computers.
extended
partition
A type of partition that
you can create only on basic master boot record (MBR) disks. Extended
partitions are useful if you want to create more than four volumes on a
basic MBR disk. Unlike primary partitions, you do not format an extended
partition with a file system and then assign a drive letter to it.
Instead, you create one or more logical drives within the extended
partition. After you create a logical drive, you format it and assign it a
drive letter. An MBR disk can have up to four primary partitions, or three
primary partitions, one extended partition, and multiple logical
drives.
Extensible Authentication Protocol
(EAP)
An extension to the
Point-to-Point Protocol (PPP) that allows for arbitrary authentication
mechanisms to be employed for the validation of a PPP
connection.
Extensible Firmware Interface
(EFI)
In computers with the
Intel Itanium processor, the interface between a computer's firmware,
hardware, and the operating system. The Extensible Firmware Interface
(EFI) defines a new partition style called GUID partition table (GPT). EFI
serves the same purpose for Itanium-based computers as the BIOS found in
x86-based computers. However, it has expanded capabilities that provide a
consistent way to start any compatible operating system and an easy way to
add EFI drivers for new bootable devices without the need to update the
computer's firmware.
Extensible Markup Language
(XML)
A meta-markup language
that provides a format for describing structured data. This facilitates
more precise declarations of content and more meaningful search results
across multiple platforms. In addition, XML will enable a new generation
of Web-based data viewing and manipulation applications.
external network
number
A 4-byte hexadecimal
number used for addressing and routing purposes. The external network
number is associated with physical network adapters and networks. To
communicate with each other, all computers on the same network that use a
specific frame type must have the same external network number. All
external network numbers must be unique to the IPX
internetwork.
extract
When you extract a file,
an uncompressed copy of the file that is created in a folder you specify.
The original file remains in the compressed
folder.
