The physical layer - it describes the hardware and the signaling techniques used at the physical connection between the network and the device.
The Physical layer is responsible for the actual hardware connection. The physical addressing is handled by the Data Link Layer.
Data Link
Physical
hub work at physical layer of osi model
First layer of the OSI model covers the cabling and electrical signaling. The first layer of OSI model is the physical layer. The physical layer also decides the transmission mode and physical media.
1. Physical layer
If you mean the OSI reference model, that's layer 1 (physical).If you mean the OSI reference model, that's layer 1 (physical).If you mean the OSI reference model, that's layer 1 (physical).If you mean the OSI reference model, that's layer 1 (physical).
it comes in the first layer, or popularly known as the physical layer. must not be confused to be in datalink layer.
The top most layer is the application layer and bottom most layer is the physical layer. Since data is transferred from top to bottom, I would say that the starting layer is the application layer.
The Physical layer
Hubs and repeaters operate at the Physical Layer of the OSI Model. The Physical Layer is the first layer of the OSI Model.
application