It is required to divide the network 172.145.0.0/18 into four sub-networks as shown below. The subnet "A" contains 22 host IP addresses, "B" contains 56 host IP addresses, "C" contains 150 host IP addresses, and "D" contains 3 host IP addresses Answer the following and show all computations details. a) Compute all missing information and place it properly in the table shown below. b) What is the number of possible host addresses in each subnetwork? + Valid Subnet Network address First address Last address Broadcast address Mask IP's