7. [3 pnts Consider a router that interconnects three subnets: Subnet 1, Subnet 2, and Subnet 3 that share a network with address 223.1.17/26. Provide the networks addresses (of the form a.b.c.d/x) of the three subnets, such that: a. Subnet 1 is required to support at least 30 interfaces b. Subnet 2 is to support at least 15 interfaces c. Subnet 3 is to support at least 12 interfaces