MCSA/MCSE Self-Paced Training Kit (Exam 70-270): Installing ...

Glossary G-13
duplex transmission Also called full-duplex transmission. Communication that takes
place simultaneously and in both directions. See also full-duplex transmission.
DVD See digital video disc (DVD).
dynamic disk A physical disk that is managed by Disk Management. Dynamic disks
can contain only dynamic volumes, which are created by using Disk Management.
Dynamic disks cannot contain partitions or logical drives, nor can they be
accessed by MS-DOS.
Dynamic Host Configuration Protocol (DHCP) A protocol for automatic TCP/IP
configuration that provides static and dynamic address allocation and management.
See also Transmission Control Protocol/Internet Protocol (TCP/IP).
dynamic-link library (DLL) A feature of the Microsoft Windows family of operating
systems and the OS/2 operating system. DLLs allow executable routines, generally
serving a specific function or set of functions, to be stored separately as files with
.dll extensions and to be loaded only when needed by the program that calls
them.
E
EAP See Extensible Authentication Protocol (EAP).
effective permissions The sum of the NTFS permissions assigned to the user
account and to all of the groups to which the user belongs. If a user has Read permission
for a folder and is a member of a group with Write permission for the
same folder, then the user has both Read and Write permission for the folder.
EFS See Encrypting File System (EFS).
EISA See Extended Industry Standard Architecture (EISA).
Encrypting File System (EFS) A feature of Windows 2000 and Windows XP Professional
that protects sensitive data in files that are stored on disk using the NTFS file
system. It uses symmetric key encryption in conjunction with public key technology
to provide confidentiality for files. It runs as an integrated system service,
which makes it easy to manage, difficult to attack, and transparent to the file
owner and applications.
encryption The process of making information indecipherable to protect it from
unauthorized viewing or use, especially during transmission or when the data is
stored on a transportable magnetic medium. A key is required to decode the information.
See also Data Encryption Standard (DES).
End-User License Agreement (EULA) An agreement that dictates the terms of service
for using an application or service.
Enhanced Small Device Interface (ESDI) A standard interface for hard drives
before the IDE/ATA interface became mainstream.