Configure a four$-$router network. All router configurations must be done using a PC connected to the router's console port through its RS$232$ serial port. Attempt to use the graphical user interface for router configuration will result in failing. Choose the following types of devices:

$\backslash$table$[[$Network$/$Subnet$,$Address,Mask,$\backslash$table$[[$First Host$],[$Address$]],\backslash$table$[[$Last Host$],[$Address$]],\backslash$table$[[$Broadcast$],[$Address$]]],[$Subnet A$,172\mathrm{.}1\mathrm{.}0\mathrm{.}0,255\mathrm{.}255\mathrm{.}254\mathrm{.}0,,,],[$Subnet B$,172\mathrm{.}1\mathrm{.}2\mathrm{.}0,255\mathrm{.}255\mathrm{.}254\mathrm{.}0,,,],[$Subnet C$,172\mathrm{.}1\mathrm{.}4\mathrm{.}0,255\mathrm{.}255\mathrm{.}254\mathrm{.}0,,,],[$Subnet D$,172\mathrm{.}1\mathrm{.}6\mathrm{.}0,255\mathrm{.}255\mathrm{.}254\mathrm{.}0,,,],[$Network $1,214\mathrm{.}1\mathrm{.}4\mathrm{.}0,255\mathrm{.}255\mathrm{.}255\mathrm{.}0,,,],[$Network $2,214\mathrm{.}1\mathrm{.}5\mathrm{.}0,255\mathrm{.}255\mathrm{.}255\mathrm{.}0,,,],[$Network $3,214\mathrm{.}1\mathrm{.}6\mathrm{.}0,255\mathrm{.}255\mathrm{.}255\mathrm{.}0,,,],[$Subnet E$,214\mathrm{.}1\mathrm{.}7\mathrm{.}64,255\mathrm{.}255\mathrm{.}255\mathrm{.}192,,,],[$Subnet F$,214\mathrm{.}1\mathrm{.}7\mathrm{.}128,255\mathrm{.}255\mathrm{.}255\mathrm{.}192,,,$Not Needed$],[$Serial $1,214\mathrm{.}1\mathrm{.}7\mathrm{.}24,255\mathrm{.}255\mathrm{.}255\mathrm{.}252,,,$Not Needed$],[$Serial $2,214\mathrm{.}1\mathrm{.}7\mathrm{.}28,255\mathrm{.}255\mathrm{.}255\mathrm{.}252,,,$Not Needed$],[$Serial $3,214\mathrm{.}1\mathrm{.}7\mathrm{.}32,255\mathrm{.}255\mathrm{.}255\mathrm{.}252,,,]]$