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A
B:
PPENDIX
G
LOSSARY
Bandwidth
The transmission capacity of a given device or network
Bit
A Binary Digit (either a one or a zero); a single digit number in base-2. A bit is the smallest unit of
computerized data.
Bridge
A device that connects two different kinds of local networks, such as a wireless network to a wired
Ethernet.
Browser
A browser is an application program that provide a way to look at and interact with all the information on
the World Wide Web
CLI (Command Line Interface)
In this interface, you can use line commands to configure the device or perform advanced device
diagnostics and troubleshooting.
Console
This is a device (usually a computer) that you use to manage a networking device via a serial port (RS232)
connection.
Crossover Cable
A cable that wires a pin to its opposite pin, for example, RX+ is wired to TX+. This cable connects two
similar devices, for example, two data terminal equipment (DTE) or data communications equipment
(DCE) devices.
DNS (Domain Name System)
Domain Name System links names to IP addresses. When you access Web sites on the Internet you can
type the IP address of the site or the DNS name.
Domain Name
The unique name that identifies an Internet site. Domain Names always have two or more parts that are
separated by dots. The part on the left is the most specific and the part on the right is the most general.
Ethernet
A very common method of networking computers in a LAN. There are a number of adaptations to the IEEE
802.3 Ethernet standard, including adaptations with data rates of 10 Mbits/sec and 100 Mbits/sec over
coaxial cable, twisted-pair cable and fiber-optic cable. The latest version of Ethernet, Gigabit Ethernet, has
a data rate of 1 Gbit/sec.
Events
These are network activities. Some activities are direct attacks on your system, while others might be
depending on the circumstances. Therefore, any activity, regardless of severity is called an event. An
event may or may not be a direct attack on your system.
FCC (Federal Communications Commission)
The FCC (Federal Communications Commission) is in charge of allocating the electromagnetic spectrum
and thus the bandwidth of various communication systems.
Firewall
A hardware or software "wall" that restricts access in and out of a network. Firewalls are most
often used to separate an internal LAN or WAN from the Internet.
Flash memory
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