1. IP Address An identifier for a computer or device on a TCP/IP network. Networks using the TCP/IP protocol route messages based on the IP address of the destination. The format of an IP address is a 32-bit numeric address written as four numbers separated by periods.

2. Usenet A worldwide bulletin board system that can be accessed through the Internetor through many online services. The USENET contains more than 14,000forums, called newsgroups, that cover every imaginable interest group. It is used daily by millions of people around the world.

3. Account An established relationship between a user and a computer, network or information service. User accounts are assigned a username. Passwords are optional for computers and networks, but mandatory for registrations and subscriptions to online services.

For personal computers, there are typically two types of user accounts: standard and administrator. A standard user is prevented from performing tasks such as installing applications, while administrators have the complete run of the computer.

4. Host (1) A computer system that is accessed by a user working at a remotelocation. Typically, the term is used when there are two computer systems connected by modems and telephone lines. The system that contains thedata is called the host, while the computer at which the user sits is called the remote terminal.

(2) A computer that is connected to a TCP/IP network, including the Internet. Each host has a unique IP address.

5. FTP Short for File Transfer Protocol, the protocol for exchanging files over theInternet. FTP works in the same way as HTTP for transferring Web pages from a server to a user's browser and SMTP for transferring electronic mail across the Internet in that, like these technologies, FTP uses the Internet's TCP/IPprotocols to enable data transfer.

6. ZIP, EXE, CAB file extensions

8. HTML Short for HyperText Markup Language, the authoring language used to createdocuments on the World Wide Web.

9. Link In hypertext systems, such as the World Wide Web, a link is a reference to another document. Such links are sometimes called hot links because they take you to other document when you click on them.

10. WYSIWYG Short for what you see is what you get. A WYSIWYG application is one that enables you to see on the display screenexactly what will appear when the document is printed. This differs, for example, from word processors that are incapable of displaying different fontsand graphics on the display screen even though the formatting codes have been inserted into the file. WYSIWYG is especially popular for desktop publishing.

11. TXT, DOC, XLS file extensions

12. Bandwidth The amount of data that can be transmitted in a fixed amount of time. Fordigital devices, the bandwidth is usually expressed in bits per second(bps) orbytes per second. For analog devices, the bandwidth is expressed in cycles per second, or Hertz (Hz).

13. DNS server The amount of data that can be transmitted in a fixed amount of time. Fordigital devices, the bandwidth is usually expressed in bits per second(bps) orbytes per second. For analog devices, the bandwidth is expressed in cycles per second, or Hertz (Hz).

14. Client The client part of a client-server architecture. Typically, a client is an application that runs on a personal computer or workstation and relies on a server to perform some operations. For example, an e-mail client is an application that enables you to send and receive e-mail.

15. Bounce When e-mailing, hard bounce is used to describe an e-mail that has bounced back to the sender undelivered without having been accepted by the recipient's mail server.