a$)$ Consider a router that interconnects three subnets: subnet$1,$ subnet $2$ and subnet $3.$ Suppose all of the interfaces in each of these subnets are required to have the prefix $223\mathrm{.}1\mathrm{.}17/24.$ Also suppose that subnet $1$ are required to support at least $60$ interfaces, subnet $2$ is to support at least $90$ interfaces and subnet $3$ is to support at least $12$ interfaces. Provide three network addresses $($of the form a$.$b$.$c$.$d$/$x$)$ that satisfy these constraints.

b$)$ Write socket program for TCP using any programming language and show the communication between$$

$$client & server?