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IT skills : IT concepts : Web client (browser), Web server, network connection, URL, mobile client, peer-to-peer applic

Retrieving a Web page. IT skills : IT concepts : Web client (browser), Web server, network connection, URL, mobile client, peer-to-peer application. This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License. . Where does this topic fit?.

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IT skills : IT concepts : Web client (browser), Web server, network connection, URL, mobile client, peer-to-peer applic

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  1. Retrieving a Web page IT skills: IT concepts: Web client (browser), Web server, network connection, URL, mobile client, peer-to-peer application This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License.

  2. Where does this topic fit? • Internet concepts • Applications • Technology • Implications • Internet skills • Application development • Content creation • User skills

  3. Client and server Server Client

  4. Uniform resource locator (URL) What happens next?

  5. Establish a temporary connection Server Client

  6. Request the page Request Server Client

  7. Send the page to the client Request Server page Client

  8. Client displays the page Request Server page Client

  9. Drop the connection Request Server page Client

  10. Data flow Client Server Request Web client program Web server program Page Memory Memory Requested page Requested page The Internet Display Storage

  11. What if the requested page is not found?

  12. Pages with links 1. Get first page Server 1 2. Get second page Client Server 2

  13. Mobile Web clients

  14. Memory in peer-to-peer applications Operating system Client program Server program

  15. 1. Establish a temporary connection between the client and server 2. Client sends the request to the server 3. Server returns the requested page or an error message 4. Client displays whatever the server returns 5. Disconnect Summary: retrieving a Web page request page Server Client

  16. Questions

  17. 1. 2. 3. 4. 5. request page Server Client Without looking back, do you recall the steps in retrieving a Web page?

  18. Does a URL show both the computer to connect to and the name of the file to retrieve or just the file name? Explain your answer. What happens if the user accidentally misspells the URL? Can one server be handling requests from more than one client at a time? Explain your answer. Do the terms client and server refer to hardware or software? Explain your answer.

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