Assume that you have been assigned the $199\mathrm{.}24\mathrm{.}3\mathrm{.}0$ network block. Answer the following questions in the space provided $($assume all subnets are usable$)$:

a$)$ Define a subnet mask that allows the creation of at least $20$ hosts on each subnet.

b$)$ What is the maximum number of hosts that can be assigned to each subnet?

c$)$ What is the maximum number of subnets that can be defined?

d$)$ Express the subnets in both binary format and dotted$-$decimal notation:

$\backslash$table$[[\backslash$table$[[$Subnet$],[$Number$]],$Octet #$1,\backslash$table$[[$Binan$],[$Octet ${?}^{H2}$