$*$ IP address subnetting: $5*2=10$ points

Suppose an ISP gets the block of addresses of the form $126\mathrm{.}120\mathrm{.}40\mathrm{.}192/25.$ Suppose it

wants to create five subnets from this block, with each block having the same number of

IP addresses. Also assume that the first possible subnet address is assigned to the first

subnet. Now answer the following:

a$.$ What is the maximum number hosts each subnetwork can have?

b$.$ What are the subnet addresses $($of form a$.$b$.$c$.$d$/$x$)$ for the five subnets?

c$.$ What is the first usable IP address of the first subnet?

d$.$ What is the broadcast address of the first subnet?

e$.$ What is the last usable IP address of the first subnet?