The first layer called the physical layer.
Physical layer which is the first layer in OSI reference model is responsible for signal encoding and decoding.
physical layer
The MAC address would place it at the data link layer of the OSI model.
Transport layer
physical layer
Application
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).
Physical
OSI stands for Open system interconnection model. Application layer is the seventh layer in OSI model.
Data link layer
Networking layer of the OSI model
In the OSI reference model, that would be layer 3 (network).In the OSI reference model, that would be layer 3 (network).In the OSI reference model, that would be layer 3 (network).In the OSI reference model, that would be layer 3 (network).