Your employer is opening a new location and the IT director has assigned you the task of calculating the subnet numbers for the new LAN. You’ve determined that you need 50 subnets for the class B network beginning with the network ID 172.20.0.0. How many host bits will you need to use for network information in the new subnets.
After the subnetting is complete, how many unused subnets will be waiting on hold for future expansion, and how many possible hosts can each subnet contain