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Hub or Switch: It is 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 facilitate communication between all the connected devices.
                    Router: It is a networking device used to connect and facilitate transfer of data between two
                    networks. It is located at the gateways where two networks connect.
                    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 digital signals to analog signals is
                    called modulation.
                    Networking Cable: It 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.

                          Tech Funda


                      Networking cable is also known as Ethernet Cable.





                    TYPES OF NETWORK
                 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)

                 It is a digital communication system that interconnects a large
                 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.

                 MAN (Metropolitan Area Network)                                               Local Area Network

                 This network consists of  two or more local area networks or campus area networks that usually
                 spans several buildings in the same city or town.






                                           LAN                                         LAN







                                                       Metropolitan Area Network

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