CertiGuide to Network+  9  Glossary

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DC

Direct Current. Electricity that only travels one direction. A battery is a common source of DC. Refer to AC.

Dynamic Data Exchange. A procedure in the Microsoft Windows operating systems designed to take requests and give or receive data from one program to another.

Introduced in Windows 2000, it is a combination of DNS and DHCP to register client machine names, dynamically. This is an effort to make NetBIOS obsolete.

Digital Data Storage. Physical container holding magnetic tape for Digital Audio Tape (DAT).

DDS1

90 Meters 2 GB no compression, 4 GB with compression.

DDS-2

120 Meters 4 GB no compression, 8 GB with compression.

DDS-3

125 Meters 12 GB no compression, 24 GB with compression.

DDS-4

150 Meters 20 GB no compression, 40 GB with compression.

To return media to the available state after they have been used by an application.

BCD. A Base 2 numbering system representing each decimal by four binary bits.

A device which receives signals from the scanner and performance interpretation of the signal into meaningful data, before submitting other devices.

A state that indicates that media have reached their allocation maximum.

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