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Appendix A: Glossary
www.gateway.com
TCP/IP (Transmission Control Protocol/Internet Protocol) - A combination of
two protocols (TCP and IP) that lets computers communicate with Web servers.
UDP (User Datagram Protocol) - UDP is a simpler, faster protocol than TCP.
UDP is used with IP. Unlike TCP, UDP drops packets without retries and packets
are received in a different order than they were sent. UDP is often used in
videoconferencing applications or games where speed is preferred over
guaranteed message delivery.
upgrade - An addition or update to a program that provides additional features
or “fixes.”
URL (Uniform Resource Locator) - A standard method of specifying a Web
location, for example the URL for Gateway is www.gateway.com
. Also called a
Web address.
VPN (Virtual Private Network) - A private network link that lets a computer
communicate with another network over the Internet. VPNs usually use
encryption to provide secure communication.
WAN (Wide Area Network) - A network that provides data communications
to a large number of independent users spread over a large geographic area. A
WAN often links several networks. The Internet is a WAN.
WEP (Wired Equivalent Privacy) - A protocol that adds security to wireless
local area networks (WLANs). WEP uses encryption to provide security.