Computer - Internet and Intranet

It is a worldwide system which has the following characteristics:

  • Internet is a world-wide / global system of interconnected computer networks.

  • Internet uses the standard Internet Protocol (TCP/IP)

  • Every computer in internet is identified by a unique IP address.

  • IP Address is a unique set of numbers (such as 110.22.33.114) which identifies a computer’s location.

  • A special computer DNS (Domain Name Server) is used to give name to the IP Address so that user can locate a computer by a name.

  • For example, a DNS server will resolve a name http://www.tutorialspoint.com to a particular IP address to uniquely identify the computer on which this website is hosted.

  • Internet is accessible to every user all over the world.

  • Intranet

    • Intranet is system in which multiple PCs are connected to each other.

    • PCs in intranet are not available to the world outside the intranet.

    • Usually each company or organization has their own Intranet network and members/employees of that company can access the computers in their intranet.

    • Each computer in Intranet is also identified by an IP Address which is unique among the computers in that Intranet.

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