Question $1.(15$ points$)$ Consider a datagram network using $8-$bit host addresses. Suppose a router uses longest prefix matching and has the following forwarding table:

a$).$ Fill in the "Associated" column the $8-$bit addresses $($e$.$g$.,00000011-00010000)$ specified by the "Destination Address Range" column.

$\backslash$table$[[\backslash$table$[[$Destination Address$],[$Range$]],\backslash$table$[[$Link$],[$Interface$]],$Associated$],[{00}^{************},0,],[{001}^{**********},1,],[{010}^{**********},1,],[{011}^{**********},2,],[{10}^{************},2,],[{110}^{**********},3,],[{111}^{**********},0,]]$

b$)$ Based on the forwarding table above, fill in the "Number" column the $8-$bit IP addresses that will be forwarded to that interface, using the longest prefix matching. Briefly explain your answer.

$\backslash$table$[[$Link Interface,Number$],[0,],[1,],[2,],[3,]]$

Question $2.(15$ points$)$ Consider a router that interconnects four subnets: Subnet $1$ to Subnet $4.$ Suppose all of the interfaces in each of these four subnets are required to have the prefix $158,83,254,\frac{0}{24}.$ Also suppose that Subnet $1$ is required to support at least $60$ interfaces, Subnet $2$ is to support at least $90$ interfaces, and Subnet $3$ and Subnet $4$ each is to support at least $25$ interfaces. Provide four network addresses $($of the form a$.$b$.$c$.$d$/$x$)$ that satisfy these constraints. Explain your answer.