TLE-ICT

• Internet


  A storehouse of digital information
• Development of Internet


  1. ARPANET (Advanced Research Projects Agency Network)

  2. TCP/IP Protocol Suite

  3. BITNET (Because It's Time Network)

  4. NSFNET (National Science Foundation Network)

  5. USENET (a discussion system that started at 1980's)
• ARPANET


  The computer network used by the U.S. Military in 1969
• TCP/IP Protocol Suite


  • Used by ARPANET
  • Group of protocols that allows your computer to connect to the internet
• BITNET


  Computer network formed by various American Universities
• NSFNET


  A network used by the National Science Foundation
• USENET


  A discussion system that started at 1980's
• Connecting to the internet


  Users can connect to the internet by signing up with Internet Service providers (IP's)
• Ways to access internet


  • Dial-up connection
  • Broadband connection
• Dial-up connection


  • Uses a modem(modular-demodulator) and a telephone line
  • Connection speeds up to 56 Kbps
• ISDN (Integrated Services Digital Network)


  • Digital network that uses telephone lines although it requires specialized equipment to transfer information
  • Connection speeds up to 128 kbps
• Cable Internet


  Provides a high-speed connection
• XTML (HyperText Markup Language)


  Written code used in creating web pages
• XHTML (Extensible HyperText Markup Language)


  Descendants of HTML and was created to standardize document types that will be made available on the Internet
• Web browser


  Software that lets users display and interact with documents and resources in the web
• Open source web browser


  • Based on Netscape Navigator
  • Developed by the team that created Mosaic, the first web browser
• Protocol


  Sort of rules that computer follows and use so that they will be able to communicate
• URL (Uniform Resource Locator)


  • Also considered as URI (Uniform Resource Identifier)
  • Address bar for IE or Mozilla Firefox
• Parts of URL


  • Scheme (http)
  • Authority
  • Path
• HTTP (HyperText Transfer Protocol)


  The protocol used to transfer documents across the web
• SSL (Secure Sockets layer)


  Allows secure communication over the internet
• File transfer protocol (FTP)


  Allows downloading and uploading of files on the internet
• Gopher


  A menu-based system that allows users to search and retrieve documents on the internet
• Telnet


  An internet protocol that lets users log in to a remote system and control the computer when they are connected
• Top-level domains


  • Gov- government institutions/agencies
  • Edu- schools and other Educational institution
  • Org- organizations
  • Mil - military organizations
  • Com- commercial website
  • Net- network organization