$($i$).$Compare and contrast the fields in the main headers of IPv$4$ and IPv$6.$ Make a table

that shows the presence or absence of each field.

$($ii$).$An organization is granted the block $140\mathrm{.}76\mathrm{.}0\mathrm{.}0/16.$ The administrator wants to

create $1024$ subnets. Show computation of the first and the last address of the first

subnet and Last subnet.