An organization has been assigned the prefix 212.1.0.0/23 and wants to form subnets for 4 departments which have the following number of hosts:

Department A: 140 hosts

Department B: 124 hosts

Department C: 62 hosts

Department D: 31 hosts

a)Give a possible arrangement of subnet masks to make this possible. [4pt]

b)Suggest what the organization might do if department C grows to 65 hosts. [1pt]