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    Let’s CatCh uP

                       Write the names of any four network terminologies.
                       1.  _______________________                    2.  _______________________

                       3. _______________________                     4. _______________________

                            DEVICES REQUIRED FOR A NETWORK

                     There are various types of devices and components 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)

                     It is an expansion card that enables a computer to access a network. It allows
                     the computer to connect to a network through a wired or wireless medium.

                                                     Hub or Switch                                            NIC

                                               It is a hardware device that has various ports 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
                          Hub or Switch
                                               facilitate communication between all the connected devices.

                          Router

                     It 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 digital signals to analog signals is
                                     called modulation. The process of converting analog signals to digital signals is called
                       Modem         demodulation.

                          Networking Cable

                     Networking cable also known as Ethernet cable is a transmission medium that
                     allows to transport information from one computer to other place. There are
                     various types of networking cables such as coaxial cable, twisted pair cable and
                     optical fiber cable.                                                                 Ethernet cable

                                                                                                  Computer Networking  11

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