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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.






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