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Evolution of the Internet. 1960s. U.S.Department of Defense. • Created Arpanet - a group of networked computers. Need for global communication in case of enemy attack. - Cold War with communist countries. - Fear of Nuclear War. Arpanet. Advanced Research Projects Agency.

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Evolution of the Internet


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    1. Evolution of the Internet

    2. 1960s • U.S.Department of Defense • Created Arpanet - a group of networked computers • Need for global communication in case of enemy attack - Cold War with communist countries - Fear of Nuclear War

    3. Arpanet • Advanced Research Projects Agency Any one of the networked computers could connect Communication system in case of enemy attack Was text based, not point-and-click

    4. 1980s • Beyond defense • National Science Foundation created a network connecting: • Educational institutions & • Research labs

    5. Internet is Born • Arpanet(work) + NFS network Internet = Network of networks Connected by phone lines & trans-oceanic cables

    6. 1990s • Use of Internet by general public Funding changed making it more affordable (cheaper) Development of WWW (point & click) made it more user friendly (easier to use) Popularity of Internet exploded

    7. Internet or WWW? • Internet is network of networks • World wide web is: • a subset of the internet •a system of linked hypertext documents •a point & click system making easy web “surfing”

    8. Who Owns/Regulates the Internet? • No one “owns” the internet • W3 Consortium • Sets language & protocal • IANA -Internet Assigned Numbers Authority • Guarantees no two domain names are identical

    9. Using the Internet • Search engines/directories • FTP - (file transfer protocol) uploads/downloads in packets • URL - uniform resource locator • http://www.w3.org

    10. 21st Century The Internet Evolves • FTP - file transfer protocal • World Wide Web - HTTP • Email • Instant messaging • Blogging • Social networking • Wireless/mobile/portable internet • What else?