Write down the IP address and the subnet mask for each of the following routers$/$devices$.$

As an example, R$2-0$ IP address and subnet mask should be $1\mathrm{.}1\mathrm{.}1\mathrm{.}1/16.$ You can choose

any random host address. The only constraint that it must be within the host addresses

range. For example, I choose $1\mathrm{.}1\mathrm{.}1\mathrm{.}1$ for R$2-0,$ someone else may choose $1\mathrm{.}1\mathrm{.}1\mathrm{.}5$ and both

of them are correct. This corresponds to setting up the IP addresses for your subnets

manaually $(30$ points$)$