Which term refers to a 32-bit number that identifies individual nodes on a network?

The term that refers specifically to a 32-bit number identifying individual nodes on a network is the IPv4 address. This standard format of an IP address has four octets, each ranging from 0 to 255, providing a numerical label that is integral for identifying devices on a network.

An IPv4 address is crucial for routing information across the internet or any local network, ensuring that data packets reach their intended destinations without confusion. It plays a key role in the functionality of the internet, enabling communication between different devices.

In contrast, while "IP address" is a more general term that encompasses both IPv4 and IPv6 addresses, it does not confirm the 32-bit specification that is particular to IPv4. "DHCP address" pertains to addresses assigned dynamically to devices on a network by the Dynamic Host Configuration Protocol and is not a type of address in its own right. "Network Identifier" could refer to various types of identifiers used in networking, but it does not specifically denote the 32-bit structure of IPv4 addresses.

Therefore, the specific recognition of the 32-bit format aligns directly with the definition of an IPv4 address, confirming its accuracy as the correct answer.