Which address is logical and used to identify a node on a network?

An IP address is a logical address that is used to uniquely identify a node on a network. It plays a critical role in routing traffic across interconnected networks, such as the Internet. Each device on a network is assigned an IP address, which can either be static (fixed) or dynamic (assigned by a DHCP server). This address allows devices to locate and communicate with each other within a network.

In contrast to logical addresses, physical addresses, such as MAC addresses, refer to the hardware identifiers assigned to network interface cards (NICs) and are not directly used for routing data over the Internet. A subnet address serves to define a subnetwork within an organization's larger network but does not uniquely identify individual devices. Therefore, the IP address is essential for logical addressing and facilitates proper data transmission between networked devices.