Cisco Systems 1240AG manual GL-3

DHCP

dipole

domain name

DNS

DSSS

Glossary

Dynamic host configuration protocol. A protocol available with many operating systems that automatically issues IP addresses within a specified range to devices on the network. The device retains the assigned address for a specific administrator-defined period.

A type of low-gain (2.2-dBi) antenna consisting of two (often internal) elements.

The text name that refers to a grouping of networks or network resources based on organization-type or geography; for example: name.com—commercial; name.edu—educational; name.gov—government; ISPname.net—network provider (such as an ISP); name.ar—Argentina; name.au—Australia; and so on.

Domain Name System server. A server that translates text names into IP addresses. The server maintains a database of host alphanumeric names and their corresponding IP addresses.

Direct sequence spread spectrum. A type of spread spectrum radio transmission that spreads its signal continuously over a wide frequency band.

E

EAP	Extensible Authentication Protocol. An optional IEEE 802.1x security feature
	ideal for organizations with a large user base and access to an EAP-enabled
	Remote Authentication Dial-In User Service (RADIUS) server.
Ethernet	The most widely used wired local area network. Ethernet uses carrier sense
	multiple access (CSMA) to allow computers to share a network and operates at
	10, 100, or 1000 Mbps, depending on the physical layer used.

F

file server	A repository for files so that a local area network can share files, mail, and
	programs.
firmware	Software that is programmed on a memory chip.

G

gateway	A device that connects two otherwise incompatible networks together.
GHz	Gigahertz. One billion cycles per second. A unit of measure for frequency.

Cisco Aironet 1240AG Series Access Point Hardware Installation Guide

OL-8371-05 GL-3