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 standard 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 Mozilla 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.someone.com/page.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 work, 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