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==Internet==
=The Internet=
* what is it?
A digital highway where many services/protocol take place
* where did it came from?
* what motivated its creation?


==ARPANET: the first computer network==
[http://worldbrain.arte.tv Documentary "World Brain"] <ref>Degoutin, Stéphane, and Gwenola Wagon. World Brain Stéphane Degoutin & Gwenola Wagon, 2012. http://worldbrain.arte.tv.</ref>


== Context for the creation of the ARPANET ==
==A Map of the Internet==
* USA, 1960s
Ingredients:
* Cold War - consequences of a nuclear attack
* groups
* Soviet Union launched in 1957 Sputnik - the first satellite
* several protocols - in place
* Sputnik trigger a space race between US and the Soviet Union: if the US only had a change to win, if they invested in scientific development.
* Choose 3 (per groups) services/software/apps take place on the Internet. E.g. Skype, Gmail, Mail (Mac software), MSN, Whastapp, WeTransfer, Facebook, BitTorrent, etc.
* ARPANET was created by the Advanced Research Projects Agency (ARPA) (later called DARPA)
* place each service under the right protocol


Protocols:
* World Wide Web (WWW)
* Voice over IP (VOIP)
* File Transfer
* Email (IMAP/SMTP/POP)
* Instant messaging (IM)
* Internet Relay Chat (IRC)


==Aims for the ARPANET==
* create access to remote computers, connected to the network
* be capable of withstanding communications in the face of an attack
** decentralized network
* allow a variety of computers to join the network and be accessed
* foster collaborative scientific research


==Characteristics of the ARPANET==
=The World Wide Web (WWW)=
* Distributed network: each node connects to more than 1 other node
A world wide documentation system, sometimes known as the Web, same times as WWW
** destruction of a node would not interrupt communication


[[File:Brand-networks-topologies.jpg|3 network topologies]]
==Web's creation==
* conceptualized by Tim Berners-Lee at CERN
* As response to his frustration with the difficulty to share information inside and outside CERN
** diversity of computers with different systems
** large number of projects and individuals
** large amounts of information with no common system to organize and communicate this information


[[File:ARPANET-nodes-1971.jpg|ARPANET nodes 1971]]
[[File:tim-berners-lee.jpg|Tim-Berners Lee]]
http://cache.boston.com/universal/site_graphics/blogs/bigpicture/lhc_08_01/lhc11.jpg


==Killer App: Email==
[Image source http://www.boston.com/bigpicture/2008/08/the_large_hadron_collider.html]
* At first the network was not heavily used
* It was difficult to access and use the different computers on the network: each its specificities, which one had to learn
* the creation of electronic mail, brought many more users to network, which were simply using to communicate
* the network change from a resource sharing system to '''a communication system'''. 
 
==Internet: the network that connected networks==
* by 1980 several digital networks, were functioning, besides ARPANET both in US and Europe:
** USENET, BITNET, FidoNet (Bulletin Board Network), etc
* these were isolated networks, not connected interconnected. 
* the task was to connect this networks
* to the wide and integrated network was given the name Internet
 
Listen to a radio program on Bulletin Board Networks: [http://www.npr.org/templates/story/story.php?storyId=120649723|The 'Wild And Woolly' World Of Bulletin Boards]
 
==Documentary==
Degoutin, Stéphane, and Gwenola Wagon. World Brain Stéphane Degoutin & Gwenola Wagon, 2012. http://worldbrain.arte.tv.


==Web: publish and find information==
Tim Berners-Lee wanted to create a system that would:
* give access to files in different computers around the world.
* link the files among themselves
* facilitate the location and retrieval of information


"''Suppose all the information stored in computers everywhere were linked … Suppose I could program my computer to create '''a space in which anything could be linked to anything'''.'' All the bits of information in every computer at CERN, and on the planet, would be available to me and anyone else. These would be a single information space". <ref>Berners-Lee, Tim. Weaving the Web. London: TEXERE, 2000.</ref>


==How==
Tim Berners-Lee
* devised a system that connected information through '''links''' (hypertext)
* created a '''hyper text language''': '''HTML''' (Hyper Text Markup Language)
* wrote an '''interpreter for HTML''' (that transforms HTML code into visual form): a '''web browser''' <ref>[http://line-mode.cern.ch/www/hypertext/WWW/TheProject.html Simulation of the first Web Browser]</ref>
* implemented a systems of addresses - URL - that allowed files in remote computers to be called and reply by sending back a (usually) HTML file.


==Result==
* The Web became a system where information was easier to find
* users of host computers (servers) could easily decide what they said to the world, and also change it
* users became publishers of content on the Web (not even needing access to a server in order to do it)
* that publishing possibility and will triggered the creation of web publishing services and formats (Geocities, blogs, Tumblrs, Facebook walls ,etc)
* in this context the user is not only a consumer, but also a producer of content (or publisher)




----
----
* What do you I use the Internet for?
<references/>
* Are the Internet and the Web the same? What is the difference between them?
* Distinction between the Internet (the infrastructure, like a highway) and the Web (one of the vehicles of the highway)
* (Brief) History of the Internet - a information highway build for the military
* (Brief) History of the Web - a wold-wide documentation system build for scientists
 
=== Films ===
Degoutin, Stéphane, and Gwenola Wagon. World Brain Stéphane Degoutin & Gwenola Wagon, 2012. http://worldbrain.arte.tv.
 
=== Optional Reading ===
Stephenson, Neal. “Mother Earth Mother Board.” Wired, http://archive.wired.com/wired/archive/4.12/ffglass_pr.html.

Latest revision as of 05:52, 5 September 2017

The Internet

A digital highway where many services/protocol take place

Documentary "World Brain" [1]

A Map of the Internet

Ingredients:

  • groups
  • several protocols - in place
  • Choose 3 (per groups) services/software/apps take place on the Internet. E.g. Skype, Gmail, Mail (Mac software), MSN, Whastapp, WeTransfer, Facebook, BitTorrent, etc.
  • place each service under the right protocol

Protocols:

  • World Wide Web (WWW)
  • Voice over IP (VOIP)
  • File Transfer
  • Email (IMAP/SMTP/POP)
  • Instant messaging (IM)
  • Internet Relay Chat (IRC)


The World Wide Web (WWW)

A world wide documentation system, sometimes known as the Web, same times as WWW

Web's creation

  • conceptualized by Tim Berners-Lee at CERN
  • As response to his frustration with the difficulty to share information inside and outside CERN
    • diversity of computers with different systems
    • large number of projects and individuals
    • large amounts of information with no common system to organize and communicate this information

Tim-Berners Lee http://cache.boston.com/universal/site_graphics/blogs/bigpicture/lhc_08_01/lhc11.jpg

[Image source http://www.boston.com/bigpicture/2008/08/the_large_hadron_collider.html]

Web: publish and find information

Tim Berners-Lee wanted to create a system that would:

  • give access to files in different computers around the world.
  • link the files among themselves
  • facilitate the location and retrieval of information

"Suppose all the information stored in computers everywhere were linked … Suppose I could program my computer to create a space in which anything could be linked to anything. All the bits of information in every computer at CERN, and on the planet, would be available to me and anyone else. These would be a single information space". [2]

How

Tim Berners-Lee

  • devised a system that connected information through links (hypertext)
  • created a hyper text language: HTML (Hyper Text Markup Language)
  • wrote an interpreter for HTML (that transforms HTML code into visual form): a web browser [3]
  • implemented a systems of addresses - URL - that allowed files in remote computers to be called and reply by sending back a (usually) HTML file.

Result

  • The Web became a system where information was easier to find
  • users of host computers (servers) could easily decide what they said to the world, and also change it
  • users became publishers of content on the Web (not even needing access to a server in order to do it)
  • that publishing possibility and will triggered the creation of web publishing services and formats (Geocities, blogs, Tumblrs, Facebook walls ,etc)
  • in this context the user is not only a consumer, but also a producer of content (or publisher)



  1. Degoutin, Stéphane, and Gwenola Wagon. World Brain Stéphane Degoutin & Gwenola Wagon, 2012. http://worldbrain.arte.tv.
  2. Berners-Lee, Tim. Weaving the Web. London: TEXERE, 2000.
  3. Simulation of the first Web Browser