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Web Systems and Technologies HTML 2 HTML 1. 2. 3. 4. 5. What is the WWW? How Does the WWW Work? How Does the Browser Fetch the Pages? Who is Making the Web Standards? What is HTML? Give a Man a Fish, and You Feed Him for a Day. Teach a Man To Fish, and You Feed Him for a Lifetime. 4 World Wide Web What is the WWW?  WWW : World Wide Web  Also 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  HTTP : communication standard 5 World Wide Web 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 6 World Wide Web 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.webpage.com/page.htm 7 World Wide Web 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:  A paragraph in HTML is defined like this: This is a paragr ...
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