Which is the network address for the subnet 10.1.2.0/24?

The network address for the subnet specified can be determined using the CIDR notation provided, which is /24. This notation indicates that the first 24 bits of the IP address are used for the network part, while the remaining bits are available for host addresses.

In an IP address, the network address is the very first address in the subnet, which identifies the subnet itself. For the given subnet of 10.1.2.0/24, the network address is indeed 10.1.2.0. This address is used to represent the entire subnet and cannot be assigned to an individual device on the network.

The option that states 10.1.2.255 represents the broadcast address for that subnet, which is used to communicate with all hosts in the subnet simultaneously. The address 10.1.2.1 is typically assigned to the first usable host in the subnet. The address 10.1.3.0 is part of a different subnet, falling outside the 10.1.2.0/24 range. Therefore, the identification of 10.1.2.0 as the network address is accurate and aligns with standard practices in IP addressing and subnetting.