$($a$)($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.

OR

$($b$)($i$).$Identify network layer protocol used to acquire the MAC address whose IP address is

given. Also explain the function of that protocol with suitable packet format.

$($ii$).$ Discuss any two scheduling techniques helps to improve Quality of Service $($QoS$)$

in internetworks? Explain with suitable diagrams