Glossary
There are currently 286 definitions and acronymns in the glossary.
Packet
A single unit of network data, routed an an integral entity from source to destination.
Page
A single screen of information at a Web site.
Payflow
A service by Verisign that allows the automatic processing of credit card payments.
PayPal
An online service for accepting payments and transfering automatically to your account. Smaller commercial sites can use PayPal
to avoid the expense of handling credit card payments directly.
Perl
Or Practical Extraction and Report Lanuage, a server-side scripting technology available for just about any server. It has a syntax similar to C or C++ and a rich repertoire of powerful functions. It is similar to PHP: Hypertext Processor, but designed as a standalone programming language and is more technical. Perl is optimized for text processing.
Photo Album
A facility of a Web site to catalog a list of photographs and make them available.
PHP: Hypertext Processor
A server-side scripting technology available for just about any server. It has a syntax similar to C or C++ and a rich repertoire of powerful functions. It is similar to Perl, but more readily embedded in Web pages and easier to learn.
Pixel
A single dot within a digital image. Such images may be composed of thousands or even millions of these dots.
Plug-in
Any of several modules that can be added to a browser to make it able to display different types of data.
Popup Window
A secondary window that a Web Page can display on the screen. They are commonly used to display ancillary information such as definitions.
Port
Any of several access channels at an I.P. Address. Most Internet services such as email, news, and Web servers use a predefined port. Unused and unprotected ports are a common way for hackers to break into a system.
Portable Document Format
A document format by Adobe that permits documents to read on virtually any type of computer.Since the Acrobat ReaderPlug-in can be automatically installed in almost any browser, PDF is a good format for making printed material
available on Web sites.
Portable Network Graphics
A type of Web image format, with the file extension .png. It was develeped as a replacement for the Graphic Interchange Format because the
latter involves a compression algorithm for which royalties must be paid. However, PNG does not support animation. PNG is better suited for non-photographic images.
Portal
A Web site that attracts visitors by offering free information, services, and access to other sites. The big search engines are portals.
Portlet
A plug-in unit of a web page available on Java Java-based servers. They allow easy customization of the content.
Post Office Protocol
A protocol to allow users to download and read email. A POP server is the receiving server. Compare to SMTP.
Presentation
The colors, graphics, font choices, and other factors that determine how the information on a Web page appears in the browser. Contrast this with content.
Protocol
A set of standards describing how computer systems communicate.
Proxy
Or proxy server, a server that relays requests to another server. By using a proxy, it is possible to conceal the origination of a request. This is form of Internet security.
