The internet

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The internet

  1. 1. The Internet<br />What it is and how it works<br />
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  3. 3. What is the Internet?<br />Globally interconnected networks of computers<br />1969: 4 connected computer hosts<br />2010: Hundreds of millions<br />
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  5. 5. The Information Superhighway<br /><ul><li>Allows us to generate, exchange, share, and manipulate information
  6. 6. Instant connection at low cost</li></li></ul><li>An artist’s interpretation of the internet.<br />
  7. 7. A brief history of the internet<br />1957: Sputnik launched, US creates DARPA<br />1969: ARPANET goes online (UCLA, Stanford, UCSB, University of Utah)<br />1972: Email adapted for internet<br />1973: TCP/IP protocols developed<br />1979: USENET started<br />1988: First T1 lines become the internet backbone<br />1990: ARPANET taken out of service<br />1992: World Wide Web<br />1999: Wi-fi standardized<br />2005: One Laptop Per Child Project begins<br />
  8. 8. Internet Infrastructure<br />Not owned or controlled by any single corporation or government.<br />Internet backbone: network of high capacity communication links.<br />ISP: internet service provider (Comcast, etc.)<br />NAP: network access point<br />
  9. 9. Connecting to the Internet<br />
  10. 10. How to ping:<br />Ping: (Packet Internet Groper)<br />Ping: time of round trip packet exchange<br />Open cmd.exe<br />Type ping and the web address<br />

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