Monday 3 September 2012

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The Internet - A Network of Networks

  • Monday 3 September 2012
  • PRABH KARAN SINGH
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  • The Internet - A Network of Networks

    Although there are benefits to using a LAN or WAN, most of us need to communicate with a resource on another network, outside of our local office or organization. Examples of this type of communication include:
    *  Sending an e-mail to a friend in another country
    *  Accessing news or products on a website
    *  Getting a file from a neighbour’s computer
    *  Sending Instant messaging with a relative in another city
    *  Looking up sports news on a cell phone

    Internetwork

    To meets these human communication needs. Internetwork had to be created, Internetworks is created by the interconnection of networks belonging to Internet Service Providers (ISPs). Some of these interconnected networks are owned by large public and private organizations, such as government agencies or industrial enterprises. The most well-known and widely used publicly accessible Internetwork is the Internet.
    The Internet is These ISP networks connect to each other to provide access for millions of users all over the world. Ensuring effective communication across this diverse infrastructure requires the application of consistent and commonly recognized technologies and protocols as well as the cooperation of many network administration agencies.

    Intranet

    The term intranet is often used to refer to a private connection of LANs and WANs that belongs to an organization, and is designed to be accessible only by the organization's members, employees, or others with authorization.
    Note: A connection of two or more data networks forms an Internetwork - a network of networks The following terms can be used interchangeably: Internetwork, data network, and network. It is also common to refer to an internetwork as a data network - or simply as a network - when considering communications at a high level. The usage of terms depends on the context at the time and terms may often be interchanged.
     
                                                             Interconnection of Networks
     


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