Which octet of the subnet mask 255.255.255.0 will tell the router the corresponding host ID?The last octetThe first octetThe first and last octetThe middle two octets

Kirk found a local community college with a two-year program and he is comparing the cost with that of an out-of-state two-year school. what is the expected total cost for one year at the local community college if kirk lives at home? what is the expected total cost for one year at the out-of-state school if kirk lives on campus?