An image map is a graphic image defined in terms of x and y coordinates so that a user can click on different areas of the image and be linked to different destinations. You make an image map by defining each of the sensitive areas in terms of their x and y coordinates (that is, a certain horizontal distance and a certain vertical distance from the left-hand corner of the image). With each set of coordinates, you specify a URL that users will be linked to when they click on that area.
An intranet is a private network that is contained within a company or enterprise. The main purpose of an intranet is to share company information and computing resources among employees.
IP Address *
Every computer connected to the Internet has to have an address. This is expressed in two ways: as an IP address in dotted decimal form, e.g. 18.104.22.168; or by a more memorable machine name, e.g. aol.com. Each computer has a unique IP address, allowing computers to address the data that they send to the correct computer on the Internet.
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An Integrated Serviced Digital Network allows you to send digital information at speeds of 128Kb over the normal telephone network. Just like a telephone call, you dial the number of the computer you are calling and establish a digital connection. It takes only a few milliseconds and the cost is the same as a normal telephone call.
ISP - Internet Service Provider
A company that provides access to the Internet. For a monthly fee, the service provider gives you a software package, username, password and access phone number. Equipped with a modem, you can then log on to the Internet and browse the World Wide Web and USENET, and send and receive e-mail. In addition to serving individuals, ISPs also serve large companies, providing a direct connection from the company's networks to the Internet. ISPs themselves are connected to one another through Network Access Points (NAPs).