3. a. Consider MEC allocated a class A network Address of 30.0.0.0 and there are 26 networks to be created which have a possible support of 180 hosts. Justify with suitable statements that the given two subnet masks will work or not. The subnet masks are 16 bits and 24 bits. (15 Marks) b. Consider a given IP address 197.10.10.0 of class C with default subnet mask where the maximum hosts and subnets available for the given IP address are 16 and 12, respectively. Determine the new subnet mask and number of bits needed for the hosts in the given network. (10 Marks)