Which statements accurately describe logical interfaces?

Logical interfaces are indeed often referred to as logical units or "units." This terminology reflects their functionality within networking devices where multiple logical interfaces can be assigned to a single physical interface. Logical units are commonly used in scenarios such as virtual LANs (VLANs) and subnetting, enabling a device to handle different types of traffic or service levels independently on the same physical connection.

The nature of logical interfaces allows them to help segregate and manage traffic efficiently, providing flexibility and scalability in network design. By creating these interfaces, network administrators can more easily apply policies and route traffic based on varied criteria, thereby enhancing control over the network environment.