Tuesday, December 14, 2010

The Internet,web and elctronic commerce

Javascript A famous scripting and open language that is widely supported in Web browsers and other Web tools. It adds interactive functions to HTML pages, which are otherwise static, since HTML is a display language, not a programming language. JavaScript is easier to use than normal Java, but not as powerful and deals mainly with the elements on the Web page. Java source code is compiled into a bytecode, stored in a separate documents, which the Web browser downloads and executes separately from an HTML pages.






Applet is a program you can find it in the Java programming language that can be included in an HTML page, much in the same way an image is included in a page. When you use a Java technology-enabled browser to view a page that contains an applet, the applet's code is transferred to your system and executed by the browser's Java Virtual Machine (JVM).












Filters is a computer program to process a data stream . And some operating systems such as Unix are rich with filter programs. Even Windows has some simple filters built in to its command shell, most of which have significant enhancements relative to the similar filter commands that were available in MS-DOS. Just as in Unix, such a filter usually gets most of its data from standard input (the main input stream) and writes its main results to standard output (the main output stream).
















Plug-ins are programs that “plug into” a host program for additional functionality. Plug-ins allow a third-party application to be used within the host program, acting as a kind of liaison or bridge. There are many kinds of plug-ins, but one that many Web surfers will be familiar with is the Acrobat® Reader® plug-in for Web browsers. This allows .pdf files to be read within the browser window. Other popular browser plug-ins include QuickTime® to view movies, and the Flash® plug-in to view Flash scripts.














Internet security suites it's necessary program when it involves protecting the computer. The web has everything from viruses to spyware to ad and malware and it's become increasingly difficult to seek out a website that's not putting one thing onto your computer. Therefore, it's vital to guard your computer and protect your privacy and info whereas surf the web, like Norton and MacAfee.













Wiki is a piece of server software that allows users to freely create and edit Web page content using any Web browser. Wiki supports hyperlinks and has a simple text syntax for creating new pages and crosslinks between internal pages on the fly.Wiki is unusual among group communication mechanisms in that it allows the organization of contributions to be edited in addition to the content itself.










Uniform Resource Locator (URL) is a Uniform Resource Identifier (URI) that specifies where an identified resource is available and the mechanism for retrieving it. In popular usage and in many technical documents and verbal discussions it is often incorrectly used as a synonym for URI. The best-known example of the use of URLs is for the addresses of web pages on the World Wide Web, such as http://www.example.com/.


 









 
File Transfer Protocol (FTP) is a standard network protocol used to copy a file from an one host to another over a TCP/IP-based network, such as the Internet. FTP is built on a client-server architecture and utilizes separate control and data connections between the client and server. FTP users may authenticate themselves using a clear-text sign-in protocol but can connect anonymously if the server is configured to allow it.

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