The MAC is maintained and used by the Data Link layer (layer 2).
A MAC address
Layer 1 of the OSI Layer Model does not support MAC addresses.
Routers don't use MAC addresses for routing. They use IP address.
yes. thougth the nic is a layer 1 device its mac address is used in datalink layer
MAC
That is considered part of layer 2.That is considered part of layer 2.That is considered part of layer 2.That is considered part of layer 2.
A layer 2 switch uses the MAC address to determine which port to switch the frame out of.
transport layer
Network Interface Layer
The MAC sublayer is part of Layer 2 - Data Link Layer - but it is more correct to say that the MAC address is the physical address.
MAC
Data Link Layer...