ZyAIR 100 Wireless PC Card
General Packet Radio Service (GPRS)
Gigahertz (GHz)
Global System for Mobile Communication
Hertz (Hz)
Host
HTTP
IMTS
Institute of Electrical and Electronic Engineers (IEEE)
internet
Internet
Intranet
IRC
ISP
LAN
Linux
A
One billion cycles per second. A unit of measure for frequency.
GSM operates in the 900, 1,800 and 1,900 MHz frequency bands. GSM 1,800 is widely used in Europe and throughout many parts of the world. In the U.S., GSM 1,900 is the same as PCS 1,900; thus, these two technologies are compatible.
Cycles per second. A unit of measure for frequency.
Any computer on a network that is a repository for services available to other computers on the network. It is quite common to have one host machine provide several services, such as WWW and USENET.
Hyper Text Transfer Protocol. The most common protocol used on the Internet. HTTP is the primary protocol used for web sites and web browsers. It is also prone to certain kinds of attacks.
(Improved Mobile Telephone Service) First analog wireless telephone service in the U.S. Limited to six calls at one time in each service area.
A professional society serving electrical engineers through its publications, conferences and standards development activities. The body responsible for the Ethernet 802.3 and wireless LAN 802.11 specifications.
(Lower case I) Any time you connect 2 or more networks together, you have an internet.
(Upper case I) The vast collection of
A private network inside a company or organization that uses the same kinds of software that you would find on the public Internet, but that is only for internal use.
Internet Relay Chat. IRC was developed in the late 1980s as a way for multiple users on a system to “chat” over the network. Today IRC is a very popular way to “talk” in real time with other people on the Internet. However, IRC is also one avenue hackers use to get information from you about your system and your company. Moreover, IRC sessions are prone to numerous attacks that while not dangerous can cause your system to crash.
Internet Service Providers provide connections into the Internet for home users and businesses. There are local, regional, national and global ISPs. You can think of local ISPs as the gatekeepers into the Internet.
Local Area Network is a shared communication system to which many computers are attached. A LAN, as its name implies, is limited to a local area. This has to do more with the electrical characteristics of the medium than the fact that many early LANs were designed for departments, although the latter accurately describes a LAN as well. LANs have different topologies, the most common being the linear bus and the star configuration.
A version of the UNIX operating system designed to run on
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