Which type of addressing is used at the Physical Layer?

This layer deals with electrical, optical, or radio signals and the physical connections between devices. It does not recognize devices, packets, or any kind of address.

Key points about addressing at the Physical Layer:

• No IP addresses or MAC addresses are used


• No port numbers are involved


• This layer only moves signals across physical media


• It defines hardware standards like connectors, cables, voltage levels

Addressing starts from the Data Link Layer (which uses MAC addresses), while the Network Layer uses IP addresses. The Physical Layer only cares about how bits are sent physically from one point to another.