please provide a brief solution.

2) Given the following network layout, answer the following questions: SHOW YOUR WORK a) ( 5 Points) Design a subnet mask that meets the required subnets, using class"C" iPh b) (5 Points) Using the subnet mask designed in step (a), how many additional subnets you have? c) (5 Points) List all valid Subnet IDs d) (5 Points) List the Default Gateway for each of the subnets e (5 Points) List range of valid IPs for each of the subnets Router I Router 3 Host Ast B Host C Host D Router # 2