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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 networks. It finds best route
                 for transmitting data packets over the network.

                               Modem                                                                   Router

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

                 LAN (Local Area Network)
                                                                                             Workstation
                 LAN is a short  form of Local Area  Network.  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.
                                                                                                              Server

                                                                                              Local Area Network


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