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Router
                                    |
                               192.168.1.254
                                    |
                                  Switch
    --------------------------------------------------------------------
   |                   |                   |                   |                   |
Server             SalesPC         AccountingPC       BuyingPC        SharedPrinter
192.168.1.1    192.168.1.2    192.168.1.3        192.168.1.4     192.168.1.5