Q $1($a$)[17$ Marks$]$ The address $204\mathrm{.}125\mathrm{.}25\mathrm{.}0$ is to be subnetted. Using $2$ bits for subnetting, answer the following questions: $1.$ Which Class is this address? How do you know? $2.$ What is the default subnet mask of this Class? $3.$ What is the new subnet mask for this address? $4.$ How many subnets does the new network mask produce? $5.$ What are the IP addresses of these subnets? $6.$ What is the broadcast IP address of each subnet? $7.$ What are the first and last valid host IP addresses of each subnet? Please show all workings clearly and use full $4$ byte decimal$-$dot$-$notation throughout