Subnetting Exercise: dividing a $/24$ network

a$.$ You are given the following network $10\mathrm{.}2\mathrm{.}24\mathrm{.}0/24.$ You need to divide it into $4$

subnets to support the following departments:

i$.$ HR: $100$ employees

ii$.$ Sales: $50$ employees

iii. IT: $30$ employees

iv$.$ Marketing: $20$ employees

b$.$ For each subnet, calculate the following:

i$.$ Subnet Range: Start and end IP addresses.

ii$.$ Number of available IPs: Total number of usable IPs per subnet.

iii. Network Address: First IP address in the subnet.

iv$.$ Broadcast Address: Last IP address in the subnet.

v$.$ Netmask: In dotted decimal format.

vi$.$ CIDR Notation: For each subnet.