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Table Of Contents  CertiGuide to Network+
 9  Glossary

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(Page 1 of 5) Backbone

The portion of the network which connects multiple smaller networks.

Background Process

Programs or processes utilizing CPU time when a foreground (visible) program or process is idle. A common example is background printing.

Backup

A duplicate copy of a program, a disk, or data, made either for archiving purposes or for safeguarding valuable files from loss should the active copy be damaged or destroyed. Some application programs automatically make backup copies of data files, maintaining both the current version and the preceding version.

Backup

The process of creating a copy of data or programs stored separately and away from the production environment.

Backup operator

A type of local or global group that contains the user rights needed to back up and restore files and folders. Members of the Backup Operators group can back up and restore files and folders regardless of ownership, access permissions, encryption, or auditing settings.

Backup types

A type that determines which data is backed up and how it is backed up. There are five backup types: copy, daily, differential, incremental, and normal.

Bad block

A disk sector that can no longer be used for data storage, usually due to media damage or imperfections.

Bandwidth

In analog communications, the difference between the highest and lowest frequencies in a given range. For example, a telephone line accommodates a bandwidth of 3,000 Hz, the difference between the lowest (300 Hz) and highest (3,300 Hz) frequencies it can carry. In digital communications, the rate at which information is sent expressed in bits per second (bps).


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