Page 10 - ModularV1.1 _c8_flipbook
P. 10

It helps in reducing the cost of hardware.
                      It helps to store information on one centralised location.
                      Reliability implies backing up of information. If a system crashes, then the information is
                     accessible on another workstation for future use.
                      It results in the reduction of installation cost.
                      User authentication process helps to secure the data.

                      NETWORK TERMINOLOGY
                  Server

                  A server is also called a 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 computer that performs a specific task is called the dedicated server.
                      The computer that manages the printers and documents being printed is called the print
                     server.
                      The computer that stores and provides access to a database is called a database server.

                      The server that manages the network traffic is called a network server.
                      The computer that delivers the requested web pages to our computer is called a web server.
                  Client

                  It is a computer that depends on the server for all the resources. For example, a server might
                  store a network version of Excel program.  Every client on the network  can access the Excel
                  program from the server.
                      COMPONENTS REQUIRED FOR A NETWORK

                  The components needed for a network are:












                         NIC          Ethernet cable          Hub or Switch         Modem             Router

                      Network Interface Card (NIC): It is an expansion card that provides network access to
                     a computer. It allows the computer to connect to a network through a wired or wireless
                     medium.
                      Hub or Switch: A Hub or Switch is a hardware device that has various boxes to which the
                     computers, printers and other networking devices are connected. The main function of a hub
                     is to direct information around the network and facilitate communication between all the

                     connected devices.
                      Router: It is a networking device used to connect and facilitate transfer  of information
                     between two networks. It is located at the gateway where two networks connect.



                   8      Modular (Ver. 1.1)-VIII
   5   6   7   8   9   10   11   12   13   14   15