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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 be classified on the basis of geographical area they cover. There are
                  five types of networks as follows:


                       LAN (Local Area Network)
                  LAN stands for 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. 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.




                                                             Workstation


















                                                                                Server


                                                               Local Area Network



                                     Imagine, computer networks as highways in the sky. What vehicles would travel on
                                     these highways and what destinations would they reach?





                       MAN (Metropolitan Area Network)
                  This network consists of  two or more local area networks or campus area networks together and
                  usually spans several buildings in the same city or town.


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