Question in computer science and engineering

Don't use any AI otherwise I will give u lots of dislike and will report to Chegg also

$($a$)$ An IPv$6$ only network is shown in Figure $3.$ Answer the following questions:

$($i$)$ Determine the MAC address for $PCl.$

$($ii$)$ Show all the necessary commands to configure the gateway of Subnet $1$ with the second$-$last usable address.

$($iii$)$ Determine the IPv$6$ interface address of R$1,$ R$2$ and R$3$ in Subnet $2$ if they are assigned the first usable, second usable and third usable address respectively.

$($iv$)$ Determine the network address of Subnet $3$ and Subnet $4$ if they are assigned with the next available subnet from Subnet $2.$

$($v$)$ Show the static route configurations in R$2$ to enable PC$3$ to communicate with all other devices.

All subnet masks are Write code for Given a roman numeral s$,$ convert it to an integer.