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J Internet
 

J Internet

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  • Fine Name: Internet.ppt This presentation is an introduction into the operation of the internet.

J Internet J Internet Presentation Transcript

  • Introduction to the Internet
  • What is it Numerous computer networks interconnected
  • What’s on it Anything you can think of is at your fingertips, if you know where to look.
  • Internet Growth * Logarithmic Scale
  • Interesting Facts
    • Internet now connects over 6000 other networks More than 1000 hosts are added each day
    • Traffic grows at 10% per month (120% per year)
    • Over 10 million people are directly connected
    • Over 25 million are indirectly connected
    Source: Navigating the Internet
  • Domain Names
    • Domains identify specific networks and computers on the internet.
    • Examples:
      • whitehouse.gov
      • search.org
      • chip.ucdavis.edu
      • library.latrobe.edu.au
      • 139.147.42.4
  • Reading Domain Names
    • Right to left signifies the broadest to most specific
      • Country code
      • Type of site
      • Site ID
      • Computer or network at that site
    chip.ucdavis.edu.us
  • Country Codes
    • There are over 220 countries connected to Internet
    • Each is identified by a two-character code for international mail
    • Examples:
      • .US = United States
      • .DE = Germany
      • .TW = Taiwan
      • .AU = Australia
      • .CH = Switzerland
  • Type of Site
    • The type of site is a three character identifier preceding the country code (if a country code is used)
    • Examples :
      • .com = Commercial (cserve.com)
      • .edu = Educational (ucdavis.edu)
      • .gov = U.S. Government (whitehouse.gov)
      • .mil = U.S. Military (af.mil)
      • .net = Network Information / Operations Centers (nyser.net)
      • .org = Non-profit Organizations (search.org)
  • E-Mail Addresses
    • Identify a specific user at a site separated by the “@” sign
    • Examples:
      • [email_address]
      • [email_address]
      • [email_address]
      • [email_address]
      • [email_address]
  • Using the Net
    • E-Mail
    • Telnet
    • USEGROUPS
    • WWW (World Wide Web)
    • IRC (Internet Relay Chat)
    • FTP (File transfer Protocol)
  • Lets Go Surfin’