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What is the Internet?

What is the Internet?. 11/27/07. Where did the Internet start?. Networked computers started by Military ARPANET – 1969 experiment by the Defense department Connected 4 supercomputers During war email part became popular Soon became a problem Protocols were developed

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What is the Internet?

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  1. What is the Internet? 11/27/07

  2. Where did the Internet start? • Networked computers started by Military • ARPANET – 1969 experiment by the Defense department • Connected 4 supercomputers • During war email part became popular • Soon became a problem • Protocols were developed • Evolved into today’s Internet

  3. World Wide Web • Internet went unnoticed for several decades • 1989 – Tim Berners-Lee proposed an idea at CERN (a physics lab in Europe) • Envisioned a network to organize info in pages that were connected by selectable text – hyperlinks • Became popular with researchers

  4. 1993 – Graphical User Interface was introduced • Mosaic released as 1st graphical web browser • Web is only part of the internet

  5. Who owns the Internet? NO ONE!!!!!

  6. Internet2 • Consortium of 200 universities working with industries and government • Advanced Internet applications and technologies • Will not replace existing Internet

  7. What will the next generation bring?Only time will tell!!!!

  8. How Do We Join this Growing Community?

  9. Users • People who use the services • Look up telephone numbers • Browse online catalogs • Make purchases • Download music/games • Send email • 2/3 of population • Home, work, schools, libraries, other public locations

  10. Internet Service Providers • Who we get our service from • For a fee • Examples: ATT, AOL, Sprint, EarthLink, Comcast Cable • Provide access to World Wide Web, email, other resources

  11. Content Providers • Supply info to Internet • Commercial businesses • Nonprofit organizations • Educational institutions • Individuals

  12. Application Service Providers • Companies that manage/distribute software-based services • Rent software access • Examples: office suites, accounting programs • Web Services

  13. Infrastructure Companies • Enterprises that own/operate paths of the Internet • Telephone, satellite, and cable companies

  14. Hardware/software companies • Companies that make/distribute products used with internet

  15. How do I find info?

  16. Internet Addresses • IP address – Internet Protocol address • Uniquely identifies each computer or device • Example • 216.239.39.99 Identifies specific computer

  17. Domain Name • IP hard to remember • Domain name – text version • www.google.com • Examples of domain names: • Com - commercial • Edu - education • Gov - government • Mil - military • Net – network provider • Org – non-profit organization

  18. Web Addresses • URL – Uniform Resource Locator • http://www.us-parks.com/grand_canyon/scenic_vistas.html • http: - Hypertext Transfer Protocol – sets rules how pages transfer on the Internet • www.us-parks.com – domain name • grand_canyon – path to the server • scenic_vistas.html – web page name

  19. Looking for info • Subject directory – classifies web page by categories www.yahoo.com • Search engine – finds web sites, web pages, images, video, news, etc. www.google.com • Some do both – Yahoo! And Google

  20. Search Strategies

  21. Using Phrases • Use Phrase searching • Keying more than one word • Returns all phrases first, then the individual words

  22. Boolean Operators • And, Or, and Not • Example: all searches related to Intel and AMD processor manufactures • Key in “INTEL AND AMD” • Example 2: all searches not including Intel • Key in microprocessors NOT Intel • Some search sites use + for AND, - for NOT

  23. Multiple Sites • Don’t be afraid to use other search sites • Give different results • Use more than one

  24. Appropriate Keywords • Do not use “the”, “a”, and “in” unless they are part of a phrase • Example: want to find out about bed and breakfasts located in Monticello, Georgia • Key in – Monticello Georgia bed and breakfast • If this doesn’t help – use synonyms • Ex. Hotel or lodging

  25. Wildcards • A special symbol in conjunction with a part of a word • Ex. Hand sign* • This would find hand signs, hand signals, hand signaling, and any other combination

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