Jargon Buster

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Full resilience: A service to ensure redundant connections are covered by failsafe alternatives, whereby another connection (ie ISDN) automatically overrides a preferred network connection (ie ADSL) in the event of failure.
Fully-managed: A service whereby your Internet Service Provider takes on the full role of managing the function, operation, service, and security of an Internet-based connection or application, often including the supply of servers, their physical housing and maintenance.
Geographic numbers: Telephone numbers provided by a national telephone exchange, defined and charged by location (ie 0208 or 0207 for London) rather than type of service (such as non-geographic 0870).
Hacker: A person who enjoys an intimate understanding of the internal workings of a system, computers and computer networks and can therefore interrogate them easily. The term is often misused in a critical context, where �cracker� would be the correct term. See also: cracker.
Hardware backbone: A high-speed line or series of connections that forms a major pathway within a network. The term is relative as a backbone in a small network will likely be much smaller than many non-backbone lines in a large network.
Host: The company or organisation that maintains the computer on which a Web site is stored. If you use a host service, also called Internet Service Provider (ISP), it is common that your Web site address will have the name of your provider within the address itself.
Hosted Server: Any computer on a network that is a repository for services available to other computers/clients on the network. It is quite common to have one host machine provide several services, such as SMTP (email) and HTTP (web).
Hot standby: A managed service to provide failsafe firewall security so that, should a firewall fail, another will automatically take over without loss of session information.
Internet exchanges: The exchange of data, images and sound via the Internet.
Internet mail gateway: Routers on the network which determine which way mail is sent.

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