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Half Duplex
Data transmission that can occur in two directions over a single line, but only one direction at a time.
Hardware
The physical aspect of computers, telecommunications, and other information technology devices.
Hotspot
A place where you can access Wi-Fi service. This can be for free or for a fee. HotSpots can be inside a coffee shop,
airport lounge, train station, convention center, hotel or any other public meeting area. Corporations and campuses
are also implementing Hot Spots to provide wireless Internet access to their visitors and guests. In some parts of the
world, Hot Spots are known as Cool Spots.
HTTP
HyperText Transport Protocol. The communications protocol used to connect to servers on the World Wide Web.
IEEE
Institute of Electrical and Electronics Engineers, New York, www.ieee.org. A membership organization that includes
engineers, scientists and students in electronics and allied fields. It has more than 300,000 members and is involved
with setting standards for computers and communications.
Internet appliance
A computer that is intended primarily for Internet access is simple to set up and usually does not support installation
of third-party software. These computers generally offer customized web browsing, touch-screen navigation, e-mail
services, entertainment and personal information management applications. An Internet appliance can be Wi-Fi
enabled or it can be connected via a cable to the local network.
Infrastructure
Currently installed computing and networking equipment.
Infrastructure Mode
Configuration in which a wireless network is bridged to a wired network via an access point.
IP
Internet Protocol. A set of rules used to send and receive messages at the Internet address level.
IP address
A 32-bit number that identifies each sender or receiver of information that is sent across the Internet. An IP address
has two parts: an identifier of a particular network on the Internet and an identifier of the particular device (which can
be a server or a workstation) within that network.
IPsec
IP Security. A set of protocols developed by the IETF to support secure exchange of packets at the IP layer. IPsec
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