Design an addressing scheme with fixed length subnets using the network: 210.105.66.0 and taking into account that the number of needed usable subnets = 5 and the number of needed usable hosts = 28 and then from your design answer the following: a) Custom subnet mask b) Total number of subnets c) Number of usable subnets d) Total number of host addresses e) Number of usable addresses f) Number of bits borrowed