1. Evolution of the Internet

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

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

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  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 http://www.w3.org  Search engines/directories  FTP - (file transfer protocol) uploads/downloads in packets  URL - uniform resource locator  http://www.w3.org 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?  FTP - file transfer protocal  World Wide Web - HTTP  Email  Instant messaging  Blogging  Social networking  Wireless/mobile/portable internet  What else?