1. (6pts) Suppose an organization has been allocated the IP address block 18.104.22.168/25. They want a
total of four straight (equal-size) subnets out of this block.
a) What Subnet Mask should they use?
b) What is the maximum number of host id's that each subnet support?
c) List the four Subnet IDs
d) List the first and last valid host address for each subnet.