Dell PowerEdge VRTX User Manual

Page 461

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Template Last Updated - 2/7/2007

Glossary

461

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Guide\Plasma_UGGlossary.fm

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F O R P R O O F O N LY

Communities

Specifies a group of users which retains the same system access rights.

CPU

Central Processing Unit

. The part of a computer that processes information.

CPUs are composed of a control unit and an ALU.

D

DHCP Client

A device using DHCP to obtain configuration parameters, such as a network
address.

DHCP Snooping

DHCP Snooping expands network security by providing firewall security
between untrusted interfaces and DHCP servers.

DSCP

DiffServe Code Point (DSCP)

. DSCP provides a method of tagging IP

packets with QoS priority information.

Domain

A group of computers and devices on a network that are grouped with
common rules and procedures.

Duplex Mode

Permits simultaneous transmissions and reception of data. There are two
different types of duplex mode:

Full Duplex Mode — Permits for bisynchronous communication, for

example, a telephone. Two parties can transmit information at the same

time.

Half Duplex Mode — Permits asynchronous communication, for

example, a walkie-talkie. Only one party can transmit information at a

time.

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