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    Double Tap                                                    Century   #Technology Literacy
                                                                                              21 st
                                                                                              Skills

                            Identify the following terms.
                            1.  A computer which depends on the server for all the resources
                            2.   A global network of millions of computers and computer networks
                              all over the world
                            3.   A website that is specifically designed to provide a single point of
                              access for information

                          DEVICES REQUIRED FOR A NETWORK

                     There are various types of devices required for a network, such as Network Interface
                     Card (NIC), Hub, Switch, Router, Modem, Network Cable and Gateway. Let us discuss
                     about these in detail.

                     Network Interface Card (NIC)

                     NIC is an expansion card that enables a computer to access a network. It allows the
                                                                                                                   NIC
                     computer to connect to a network through a wired or wireless medium. It is also
                     known as Network adapter.

                     Hub or Switch

                                                Hub or  Switch is a hardware device  that has  various  ports to which  the
                                                computers, printers and other networking devices are connected. The main

                           Hub or Switch        function of a hub is to direct information around the network and facilitate
                                                communication between all the connected devices.
                     Router

                     Router is a networking device used to connect and facilitate transfer of data in
                     the form of packets between two networks. It finds best route for transmitting
                     data packets over the network.  It is located at the gateways where two

                     networks connect.
                                                                                                              Router
                                   Modem

                                   It stands for  MODULATOR–DEMODULATOR. It is a hardware device that allows a
                                   computer to send and receive data over a telephone line. It converts data from digital

                                   to analog and vice versa. The process of converting analog signals to digital signals is
                                   called demodulation. The process of converting digital signals to analog signals is called
                        Modem      modulation.

                                                                                                 #Computer Networking  15

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