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Beacon Interval
Data transmitted on your wireless network that keeps the network synchronized.

 DMZ (Demilitarized Zone)
Removes the router's firewall protection from one PC, allowing it to be "seen"
from the Internet.

Finger
A program that tells you the name associated with an e-mail address.

Fibre Distributed Data Interface (FDDI)
FDDI is a fibre optic backbone to connect LANs


IEEE (The Institute of Electrical and Electronics Engineers)
An independent institute that develops networking standards.

IPCONFIG
A Windows 2000 and XP utility that displays the IP address for a particular
networking device.

Burst Mode
A way of doing data transmission, usually faster than normal transmission mode,
in which a continuous block is transferred between main memory and an input/output
device without interruption until the transfer has been completed. Characteristically,
burst mode is sustainable for only limited periods of time under special conditions.

Preamble
Part of the wireless signal that synchronizes network traffic.

RADIUS (Remote Authentication Dial-In User Service)
A protocol that uses an authentication server to control network access.

Roaming
The ability to take a wireless device from one access point's range to another
without losing the connection.

Defacement
In Web site security terminology, the word defacement is most often used to describe the changing or defacing of a Web page or Web site by an unauthorized individual or process, usually a hacker.

 Challenge-Handshake Authentication Protocol (CHAP)
An authentication method that can be used when connecting to an Internet Service
Provider. CHAP allows you to log in to your provider automatically, without
the need for a terminal screen.

Daisy Chain
A method used to connect devices in a series, one after the other.

DDNS (Dynamic Domain Name System)
Allows the hosting of a website, FTP server, or e-mail server with a fixed
domain name (e.g., www.xyz.com) and a dynamic IP address.

DHCP (Dynamic Host Configuration Protocol)
A protocol that lets one device on a local network, known as a DHCP server,
assign temporary IP addresses to the other network devices, typically computers.


PEAP (Protected Extensible Authentication Protocol)
A protocol for transmitting authentication data, including passwords, over
802.11 wireless networks.

Ping (Packet INternet Groper)
An Internet utility used to determine whether a particular IP address is online.

POP3 (Post Office Protocol 3)
A standard protocol used to retrieve e-mail stored on a mail server.

DDR
Short for Dial-on-Demand Routing. DDR is a routing technique developed by Cisco that allows a user to utilize existing telephone lines, or public circuit-switched networks, to form a WAN instead of lines that are dedicated specifically to the WAN. DDR is typically implemented by users that do not need permanent, continuous links between sites on the WAN because the volume of traffic over the WAN is low and the transmissions are periodic as opposed to continuous

Big Blue
A slang name for International Business Machines Corporation (IBM). Blue is IBM's corporate color.
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