Page 14 - Plus V4 with Adobe class 8
P. 14

ADVANTAGES OF COMPUTER NETWORK

        The advantages of computer network are:

            The information can be easily shared with others.

            It reduces the cost of hardware.

            Store information in one centralised location.
             Reliability implies backing up of information. If a system crashes, then the information is accessible
           on another workstation for future use.

            Reduction in installation cost.

            User authentication process to secure the data.
             People will have access to all the information they need to get and share through e-mail and instant

           messaging which saves time and money in passing information.

              COMPONENTS OF A NETWORK


        There are mainly five components of a network which are as follows:

            Sender: A sender is a computer that wants to send information to other computer connected to the
           network.

            Receiver: A receiver is a computer which is expecting the data from other computer on the network.
            Transmission  Medium: A transmission medium is a communication channel through which

           information is transferred from one computer to another on a network.
            Message: A message is the information or data which needs to be transferred from one computer
           to another.

            Protocol: A protocol is a set of standard rules used for communication.


              NETWORK TERMINOLOGIES

        There are several terms related to computer network. Let us discuss some of them.

        Server

        A server is also called host computer. It controls the access to the hardware and software on the
        network. It provides a centralised storage area for the programs, data and information.

            The server which performs a specific task is called a dedicated server.

            The server which manages the printers and documents being printed is called the print server.

            The server which stores and provides the access to a database is called a database server.

            The server which manages the network traffic is called a network server.

            The server which delivers the requested web pages to our computer is called a web server.



            12  Plus (Ver. 4.0)-VIII
   9   10   11   12   13   14   15   16   17   18   19