A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

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IIS (Internet Information Server)
This is the Microsoft web server program. A version called PWS (personal web server) is included with Windows 98.

IMAP
Internet Message Access Protocol. A new email standard that leaves a copy of your email messages on the email server for a specified time. The big advantage is that you can download email from home and then download it again at work.

Internet
The Internet is a global network of computers with roughly 500 million users, all over the world. Anyone can join this network. From your computer you can send and receive information anywhere in the world - all at the cost of a local phone call, 24 hours a day. As people gradually learn more and more about how to use this technology, the Internet is transforming whole industries and creating new ones from scratch.

Intranet
An intranet is a ‘private internet’ which acts as a powerful means of communication within a company or a group of trading partners. Particularly practical if more than one computer platform is in use, e.g. Windows and Apple Macs. Intranets are protected from the outside world by security measures including firewalls.

IP Number (Internet Protocol Number)
Sometimes called a dotted quad. A unique number consisting of 4 parts separated by dots, e.g. 165.113.245.2
Every machine that is on the Internet has a unique IP number - if a machine does not have an IP number, it is not really on the Internet. Many machines (especially servers) also have one or more Domain Names that are easier for people to remember.

IPP (Internet Payment Provider)
A company offering merchant account creation and online transaction services.

IRC (Interactive Relay Chat)
A method of communicating with other users on the Internet in real time using a text-based service.

ISDN (integrated services digital network)
A fast phone line that significantly increases the rate at which you can transmit and receive information (either 64 or 128kbps), for example when connect to the Internet. If you have large files of data to transmit (such as video or high resolution photography) or you want to video and data conference regularly, you may want an ISDN line. Broadband connections are even faster than ISDN, and are beginning to supersede it).

ISP (Internet service provider)
A company that provides third party access to the Internet. All ISPs offer some standard basic services, such as 24-hour Internet access, a unique e-mail address for your company, storage space for your own website and basic software programs for browsing the Internet.