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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E-mail

• 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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