es can ment and programming purposes. They are be displayed to fit on the screens of cellular Glossary devices and how devices access and view are the interfaces to which cabling is con- these sites. nected. Wire speed is achieved with powerful switch processors, the computers that look up WCDMA (Wideband Code-Division addresses and forward packets. Multiplexing) The 3G service that most GSM operators wireless local loop install. Uses wireless media to bring telephone ser- vice to a customer's premises rather than WDM (Wavelength-Division copper or fiber cabling. Multiplexing) Also known as dense wavelength-division WISP (Wireless Internet Service multiplexing, this enables multiple colors or Provider) frequencies of light to be carried on single Provides Internet access using noncellular pairs of fiber. WDM greatly increases the wireless technology. capacity of network providers' fiber-optic networks. WLAN (Wireless Local Area Network) Local Area Network (LAN) in which devices Wi-Fi (Wireless Fidelity) are connected to other devices or the LAN Wireless networks based on 802.11 IEEE wirelessly rather than with cabling; 802.11- standards. The Wi-Fi Alliance tests and based Wi-Fi networks are WLANs. certifies that products meet IEEE 802.11 standards. worms Viruses that are programmed to start infect- WiMAX (Worldwide Interoperability ing networks and other computers at a pre- for Microwave Access) determined future time and date. These A forum whose goal is to facilitate interop- time-released viruses are also referred to as erability of equipment based on 802.16 stan- bots. dards for high-speed fixed wireless service using the 2GHz to 11GHz frequency bands. WWW (World Wide Web) Newer versions are used for mobile wire- Connects users from one network to another less service. WiMAX fixed wireless service when they "click" links. It was developed is used for Internet access and for backhaul in 1989 to make information on the Internet networks, which connect cellular towers to more accessible. A browser is required to