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How The Web Works
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How The Web Works

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  • 1. How The WorldWide Web Works
  • 2. How The Web Works Browser Connects & Requests a Page Server Sends Back The Requested Page
  • 3. How does it know where to look? Anatomy of a Uniform Resource Locator (URL) http://www.chuckscoggins.com/index.html
  • 4. Anatomy of a URLhttp://www.chuckscoggins.com/index.html The Protocol (Hypertext Transfer Protocol)
  • 5. Anatomy of a URLhttp://www.chuckscoggins.com/index.html The Location (Web Server)The Domain Name Server (DNS) translates the domain name into an IP address.
  • 6. Anatomy of a URLhttp://www.chuckscoggins.com/index.html 74.53.24.242
  • 7. Anatomy of a URLhttp://www.chuckscoggins.com/index.html The File Name
  • 8. Anatomy of a Web Page HTMLThe file that is sent from the web servercontains hypertext markup information.
  • 9. Say What!??! HTMLThe file that is sent from the web servercontains hypertext markup information.
  • 10. Say What!??! HTMLThe file that is sent from the web servercontains hypertext markup information. the web page you want to view
  • 11. Say What!??! HTML The file that is sent from the web server contains hypertext markup information.Across the internet, translated into electrical signals (1’s and 0’s) that get sent across wires, using TCP/IP hypertext transfer protocol.
  • 12. Say What!??! HTML The file that is sent from the web server contains hypertext markup information. A computer at a hosting company that isrunning software that “serves” up web page files.
  • 13. Say What!??! HTML The file that is sent from the web server contains hypertext markup information. The “code” or markup text thatthe programmer/designer puts in the html file.
  • 14. Anatomy of a Web Page HTML The file that is sent from the web server contains hypertext markup information. BrowserInterprets the hypertext markup information, scripts, etc. in order to display the page.
  • 15. File Transfer Protocol FTP A different protocol than “http” that is used for transferring / moving files fromcomputer to computer (or server to server).