$128\mathrm{.}119\mathrm{.}40\mathrm{.}128$ and CIDR prefix $/26.$ Assume each floor uses a subnet, including Subnet $1$ for parts area, Subnet $2$ for tyre area and Subnet $3$ for cleaning area, as shown in Figure $1$ below. It has a subnet $4$ for bikes outside the house. Design a subnet mask that provides the same size $4$ subnets. Provide detailed calculation and fill in the following table. $(3$ marks$)$ RMIT Classification: Trusted Assume that your employee number is assigned by your role $($in one of the departments of the motorbike company$)$ and can be identified by individual subnet addresses. Convert your employee numbers into binary by using the mod$2$ operation. Show the conversion and fill in the following table. $(2$ marks$)$