H-K

H?K

hotspot

An area in which Wi-Fi users can connect to the Internet, whether for pay or for free.

hub

A simple wired device used to connect computers on a network.

IEEE

Institute of Electrical and Electronics Engineers. See www.ieee.org for more information.

infrastructure mode

A Wi-Fi network in infrastructure mode uses an access point to intermediate network traffic (as opposed to ad-hoc mode, which features direct peer-to-peer communication).

IP address

A hexadecimal tuplet that denotes a node on the Internet or other network.

isotropic radiation pattern

If an antenna has an isotropic radiation pattern, the antenna transmits radio waves in all three dimensions equally.

ISP

Internet service provider, such as the cable or phone company providing you Internet access using dial-up, cable, or DSL.

IT

Information technology department, usually in a large enterprise.