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Bandwidth is generally in bits per second (bps) or Bytes per second (Bps), Kilobytes per second
                 (KBps) and Megabytes per second (MBps). There can be various types of bandwidths, which are
                 network bandwidth, data bandwidth, or digital bandwidth.




                           TYPES OF NETWORKS

                 Networks can be classified based on their size, complexity and the geographical area covered by
                 them. Let us understand these categories in detail.


                 PERSONAL AREA NETWORK (PAN)

                 PAN refers to the privately owned network. PAN is used to
                 establish communication amongst the computers within the
                 range of 20 to 30 feet. This type of network can be wired or
                 wireless.




                                             LOCAL AREA NETWORK (LAN)
                                Workstation
                                             LAN  is a digital communication system that interconnects a larger
                                     Server
                                             number of computers and other peripheral devices within a radius of
                                             less than 1 km. This type of network is useful when you want to connect
                                             two different departments in a building (e.g. an office, a building or
                                             a factory). The hardware, as well as software resources, are shared
                                             through LANs. Your school lab is an example of LAN.



                 CAMPUS AREA NETWORK (CAN)
                 CAN connects two or more LANs that are limited to                             Campus

                 specific geographical areas. For example, college                          Network
                                                                                              Area
                 campus, office building, etc. A campus area network is
                 larger  than  LAN  since  it  may  span  multiple  buildings
                 within a specified area.



                                                       METROPOLITAN AREA NETWORK (MAN)

                      LAN                 LAN          MAN consists of two or more local area networks or campus
                                                       area networks together that usually spans several buildings
                                                       in the same city or town. It covers an area ranging from 10
                                                       to 100 km. For example, the Internet services provided to
                                                       users in a city or the ATM network system of any area falls
                                LAN
                                                       under MAN.





                                                                                              Networking Concepts  13
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