yes. thougth the nic is a layer 1 device its mac address is used in datalink layer
A Switch is a Layer 2 device as they operate in the data link layer
There are no switches that operate on layer 7 (Application layer) on the OSI Model. Switches are a layer-2 device because they manage and switch frames.
virtual switch
bridge
A router.
There are no layer 1 switches; switches run at layer 2 or 3. A hub is a layer 1 device.
Router works in Network Layer of OSI model
datalink layer
Network layer
TCP operates at transport layer
VSAT is a layer 2 device.