What is the World Wide 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 protocol called HTTP.

How does the  WWW work?

    * Web 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 and Firefox.

How does a Browser Fetch a Web Page?

    * A browser fetches a page from a web server by a request.
    * A request is a standard HTTP request containing a page address.
    * An address may look like this: http://www.example.com/default.htm.

How does a Browser Display a Web Page?

    * All web pages contain instructions for display.
    * The browser displays the page by reading these instructions.
    * The most common display instructions are called HTML tags.
    * HTML tags look like this <p>This is a paragraph.</p>.


What is a Web Server?

    * The collection of all your web pages is called your web site.
    * To let others view your web pages, you must publish your web site.
    * To publish your work, you must copy your site to a web server.
    * Your own PC can act as a web server if it is connected to a network.
    * Most common is to use an Internet Service Provider (ISP).

What is an Internet Service Provider?

    * ISP stands for Internet Service Provider.
    * An ISP provides Internet Services.
    * A common Internet service is web hosting.
    * Web hosting means storing your web site on a public server.
    * Web hosting normally includes email services.
    * Web hosting often includes domain name registration.