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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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