The NIC operates on Layer 2 (Data Link Layer) of the OSI Model.
layer 4 - transport layer
TCP/IP because the osi model has seven layer but in tcp/ip only four layers and most important is that the tcp/ip model is reduce the function of osi model.
The network layer. # Physical # Data Link # Network # Transport # Session # Presentation # Application
Data Link Layer
Router works in Network Layer of OSI model
Hubs and repeaters operate at the Physical Layer of the OSI Model. The Physical Layer is the first layer of the OSI Model.
Hubs are a physical layer (layer 1) device; most switches operate at the Data Link layer (Layer 2) of the OSI model.
1. Repeaters (Operate at the OSI Physical Layer).2. Bridges (Operate at the OSI Data Link Layer).3. Routers {and Brouters} (Operate at the OSI Network Layer).
Repeaters operate at the physical layer of the OSI model.
Layer 3
The NIC operates on Layer 2 (Data Link Layer) of the OSI Model.
Network Layer
Layer 2 - Data Link
All layers.
Layer 5 - Session layer
ODBC and SQL operate at Session Layer.