Which type of addressing is used to route packets across networks?

Logical addressing is used to route packets across networks because it allows devices to be identified on a network using an address that is independent of the underlying hardware. This addressing scheme utilizes protocols like IP (Internet Protocol), which assigns an IP address to each device. This address can vary based on the network it is on, enabling devices to communicate effectively regardless of their physical connections.

In contrast, physical addressing, which is tied to the hardware of the network interface card (such as MAC addresses), operates at a lower level and is primarily used for communication within the same local network segment rather than across different networks. Static addressing refers to assigning a fixed IP address to a device, while dynamic addressing involves the automatic assignment of IP addresses, typically by a DHCP server. While both static and dynamic concepts pertain to how IP addresses can be assigned, they still operate on the basis of logical addressing for routing packets across networks.