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— KEYS TO SUCCESS GEEK-SPEAK GLOSSARY • Access Point (also AP) — Basically a wireless hub. An access point provides a central point for wireless clients to connect to, in order to exchange information. An Access Point typically also includes a connection to a wired network, to extend the wired network to wireless clients. • Bridge — A box that connects two networks together, for example your local wired network to a marina Wi-Fi network. In the Wi-Fi context a bridge will act as a wireless client connected to an access point on one side, and an ethernet connection on the other to connect to a computer network card. • Client — In networking terms, your computer. The other end is a server. • Client Card (also Wireless Adapter) — A network card (or box) to connect your computer to a network. Traditionally a client card was a connection to a wired network, but common usage is now as a wireless (e.g. WiFi) network client connection.

• dBi — Decibels over Isotropic, a measure of effective power compared to an Isotropic radiator, i.e. an antenna that radiates equally well in all directions. A directional antenna will have gain in one direction, at the expense of signal in other directions. • DHCP Server — A service that assigns dynamic IP addresses. A DHCP server can be a background program running on a computer (for example a Windows computer with ICS), or an internet router, or a server on a WAN connection. • Ethernet Adaptor — A device that connects a computer to a network. This can be a built-in network adaptor, a PCMCIA card ('PC card'), a USB-connected network adaptor, or (for desktop computers) a card in the computer. • Gain — In radio/Wi-Fi antenna terminology, refers to the increase in signal strength in a particular direction. Antenna gain is usually measured in dBi,

which is gain measure in dBs over an isotropic radiator (i.e., one that sprays signal equally everywhere). • Hub — A device for connecting multiple wired ethernet connections together to form a local network. A hub is a 'dumb' device, basically a network 'party line' where everyone interferes with everyone else. • NIC — Network Interface Card. Same as ethernet adaptor although usually refers to a plug-in card in a desktop computer. Also called a 'network card' or 'client card'. • Port — A network connection. Each computer or network device can carry on multiple simultaneous connections, with each connection using a different port number. Some ports are standardized, for example a POP3 email server always uses port 110 for connections from email client programs. • Router — A device, typically a hardware box, that acts as a gateway between a local network and the Internet. — jim corenman

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Latitude 38

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Profile for Latitude 38 Media, LLC

Latitude 38 April 2007  

The April 2007 issue of the West's premier sailing and marine magazine.

Latitude 38 April 2007  

The April 2007 issue of the West's premier sailing and marine magazine.