Whats is Internet ?How does it work ?
By ROUCOURT Mathieu 3 TI C
2016-2017
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SUMMARY
• Web != Internet• Internet• Inventor of World Wide Web• How does it work ?• How to connect to internet• Protocols
• TCP/IP
• E-mail• What Internet brings to people ?• Not everything is fine
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Web is different from the Internet
WEB
• Links
• Information
• Web pages
INTERNET• Global network
• Access to the Web
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Internet
• Early 60s• For America military and universities• Thanks to telephone system• Files started to be sent from a network to another
• At first, downsides for the user• Had to know where the files were stored
• Tell their computer to « phone up » another one
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The inventor of World Wide Web
• Tim Berners Lee invented• A common language to link datas around the world
• First website on 6th August 1991• To know if online, received a call from London
• HTML was born
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How does Internet work ?
• Source = computer
• Message / File / Document divided in packets (marked with a number)
• Sent to the Destination computer
• Packets randomly received
• Packets reassambled to recover the message / …
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• ISP connects user to internet
• IP address given to any device connected
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Protocols
• Same set of rules for communication
• TCP• Responsible for packets division and reassembling
• IP• Packets has to know the final destination of the file
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How to connect to Internet ?
•• Dial-up connection
• ISP
• Broadband connection• Wireless connections
• Wifi• Li-fi ?
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• Invented in 1965
• Stands for Eletronic mail
• Most common way to send messages on Internet
• First way to communicate even if large distance
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What Internet brings to people ?
• Information
• E-learning
• E-shopping
• Social networkings
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• Internet brings negative things too• Hacking
• Addiction
• False informations
• …
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Thanks for listening
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