INFO TECH INFRASTRUCTURE

• Internet


  A global network of interconnected computers, servers, phones, and smart devices that communicate using protocols like TCP/IP
• The Internet allows access to vast information, communication worldwide, and various services like email, social media, online shopping, and more
• Internet's physical infrastructure


  • Fibre-optic cables covering continents and undersea cables crossing oceans
  • Backbone routers on the Internet backbone for routing data
  • Peering agreements between backbone providers for efficient data transmission
• The operation of the Internet

  1. Protocols like TCP/IP define rules for communication

  2. Computers, smartphones, cables, satellites, routers, and servers facilitate connectivity

  3. Interconnected networks enable global interconnectivity and access to services and information
• Internet services - Communications

  • E-mail
  • USENET newsgroups
  • LISTSERV
  • Chatting
  • Instant messaging
  • Telnet
  • Internet telephony
  • Internet fax
  • Streaming audio and video
• Internet services - Information Retrieval

  • File Transfer Protocol (FTP)
  • Archie
  • Gophers
  • Veronica
  • Wide Area Information Servers (WAIS)
• Internet services - Web Services

  • Delivery of software components via a web site
  • .NET
• World Wide Web


  The portion of the Internet that uses the Hypertext Transport Protocol (HTTP) to transmit data
• World Wide Web components

  • Home Page
  • Web Site
  • Hyperlinks
  • Webmaster
  • Uniform Resource Locator (URL)
  • Hypertext Transport Protocol (HTTP)
  • Browsers
  • Offline Browsers
  • Search Engines
  • Metasearch Engines
  • Web Crawlers
  • Registration
• Intranet


  A private network within an organization that uses Internet technologies
• Extranet


  An extension of an organization's intranet that is accessible to authorized outside parties
• Other Web-based Applications


  • Online banking
  • Online shopping
  • Online education
• The Internet is a complex system of interconnected networks that revolutionised mass communication and commerce by enabling global interconnectivity and access to a vast array of services and information resources
• The Internet is international, with users on all continents
• The cost of personal computers and Internet connections are prohibitively high for most of the world's population
• Political, cultural, and regulatory barriers have slowed the rate of Internet adoption internationally
• The vast majority of sites are in English
• The vast majority of content is generated in the United States