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Glossary
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Technical Glossary: C

Term Index

Cache

Temporary Storage. When your web browser downloads a web page, it will store it in your browser's cache so that it can save time by not downloading that page again.

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CGI

Common Gateway Interface. CGI is a way to allow the creation of dynamic content on the web (and for a long time, then only way). These programs are often referred to as "CGI Scripts" which are usually scripts (Perl, VB, Awk, etc) or Programs (C and Pascal) located on a web server that would process requests from a user (usually from an HTML form). The CGI script would then output a web page to the browser with the dynamically generated content.

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Chat

Chat allows people to type messages to each other in a near-real-time fashion. Some chat rooms require a special software program called an IRC client. Others can run as a Java applet in your web browser (thus, you don't have to download another software program).

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Click through rate

Percentage of users who click on an advertisement. Used to determine effectiveness of commercial Ads on web sites.

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Clickable Image

In image on a web page that you click on and the page will take you to another document. This is like Hypertext, but with images instead of text. Images with more than one clickable area are called Image Maps.

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Client

(1)The computer that requests information from a server or host computer.

(2)On the web, also know as the web browser.

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Client Errors

Errors that occur from invalid request from a web browser -- usually from bad links or misspelled addresses. A popular example is the HTTP 404 Error (page not found). Most client errors are in the HTTP 400 range.

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Computer Virus

A small program written to do damage to a computer system. Usually, these programs attach themselves on other programs and are activated each time the host file is accessed. This, in turn, allows the virus to infect other files -- spreading like a normal virus would in a human. While some viruses only infect files, most have a specific purpose -- to destroy information on a computer system. Some viruses delete special system files and render the system unusable while others wait for a special date ("time-bomb" viruses) and format the computer harddisk. Special softare called Anti-virus software can help find these destructive programs before they delete something you wanted to keep.

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Cookies

A small piece of information set by a web site so it can remember you. For more information on cookies, see the Cookies FAQs.

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Cyberspace

Term used to describe "space" or resources on a computer network -- like the Internet.

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

Last Updated: Thursday, March 25, 1999

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