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Router

                 It is a networking device used to connect and facilitate transfer of
                 data in the form of packets between two network. It finds best route
                 for 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 is used
                               to connect a computer to the Internet via a telephone line or a wireless medium.
                               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
                  Modem        digital signals to analog signals is called modulation.
                 Networking Cable


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

                                                A gateway is a network device that allows the data to flow between
                                                two different networks which may use different protocols. It collects
                                                data that is to be sent from one computer, converts it into small
                                                packets and then sends them to another computer.

                           Gateway
                     TYPES OF NETWORKS

                 Different types of networks can classified on the basis of geographical areas covered. There are
                 five types of networks as follows:                                               Workstation

                 LAN (Local Area Network)

                 LAN is a  short  form  of  Local  Area  Network.
                                                                                                              Server
                 It is a digital communication system  that
                 interconnects a larger number of computers
                 and other peripheral devices within a radius of
                 less than 1 km. This type of network is usually
                 preferred for a smaller area such as a residence,
                 school, laboratory, university campus or office

                 building. By using the LAN network, users can
                 exchange data and messages in the easy and
                 fast way. Cables and communication devices
                 are used to connect computers to the LAN.                        Local Area Network


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