What is the correct broadcast address for the subnet 10.1.2.0/24?

In a subnetted network, the broadcast address is the last address in the subnet range. For the subnet 10.1.2.0/24, the "/24" indicates that the first 24 bits of the address are used for the network portion, which means the subnet mask is 255.255.255.0.

Given this mask, the range of usable IP addresses in the subnet is from 10.1.2.1 to 10.1.2.254. The broadcast address is utilized to send data to all hosts within the subnet simultaneously. It is calculated by setting all the host bits to '1'. In this case, the last octet, which is the host portion, can range from 0 to 255.

Thus, the broadcast address, being the highest address in this subnet, is 10.1.2.255. This address is recognized by all devices on the 10.1.2.0/24 subnet, as it signifies messages directed to all hosts in that network segment.