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Stands for “World Wide Web.” It is important to know that this is not a synonym for the Internet. The World Wide Web, or just “the Web,” as ordinary people call it, is a subset of the Internet. The Web consists of pages that can be accessed using a Web browser. The Internet is the actual network of networks where all the information resides. Things like Telnet, FTP, Internet gaming, Internet Relay Chat (IRC), and e-mail are all part of the Internet, but are not part of the World Wide Web. The Hyper-Text Transfer Protocol (HTTP) is the method used to transfer Web pages to your computer. With hypertext, a word or phrase can contain a link to another Web site. All Web pages are written in the hyper-text markup language (HTML), which works in conjunction with HTTP.
What is the WWW?
- WWW stands for the World Wide Web
- The World Wide Web is most often called the Web
- The Web is a network of computers all over the world
- All the computers in the Web can communicate with each other
- All the computers use a communication standard called HTTP
How Does the WWW Work?
- Information is stored in documents called Web pages
- Web pages are files stored on computers called Web servers
- Computers reading the Web pages are called Web clients
- Web clients view the pages with a program called a Web browser
- Popular browsers are Internet Explorer, Chrome, and Firefox
How Does the Browser Fetch the Pages?
- A browser fetches a Web page from a server by a request
- A request is a standard HTTP request containing a page address
- A page address looks like: http://www.someone.com/page.htm
How Does the Browser Display the Pages?
- All Web pages contain instructions on how to be displayed
- The browser displays the page by reading these instructions
- The most common display instructions are called HTML tags
- The HTML tag for a paragraph looks like this: <p>
- A paragraph in HTML is defined like this: <p>This is a paragraph.</p>
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