(7 Marks) a) Consider the IP address 191.168.0.0 and its subnetted maskis 255.255.255.240. Compute (1) Total number of subnets Total number of host addresses Number of usable addresses (iv) Number of bits borrowed Subnet range for 6 subnet Subnet ID for 9 subnet (vii) First valid host address for 128 subnet (viii) Broadcast address for 15th subnet (3 Marks) b) Find the first andlast address in each block (1) 201.128.64.32 126 (ii) 18.120.62.16 /24