You have just been given the IP network address 204.212.15.0, and you need at least four subnets, each supporting a minimum of twenty-seven PC's. What is the class of your network? What subnet mask(s) will accomplish the goal? What are the IP addresses of your four subnets? What is the range of legal host addresses for each of your subnets? What is the broadcast address for each of your subnets?