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Chapter Profile
                    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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