Data-Link layer.
The NIC operates on Layer 2 (Data Link Layer) of the OSI Model.
Layer 2
Layer 2 - The Data Link Layer Layer 2 of the OSI model provides error-detection capability
Data Link layer (#2)
OSI stands for Open system interconnection model. Application layer is the seventh layer in OSI model.
Hubs are a physical layer (layer 1) device; most switches operate at the Data Link layer (Layer 2) of the OSI model.
A network bridge connects multiple network segments at the data link layer (Layer 2) of the OSI model.
Layer 2, Data Link.
layer 2
Layer 2 - Data Link
Router works in Network Layer of OSI model
The TCP/IP model was adopted and condensed into 4 Layers.1. Link layer ( Layer 1and 2 of the OSI model)2. Internet Layer (Layer 3 of the OSI model)3. Transport ( Layer 4, 5 and 6 of the OSI model)4. Application ( Layer 7 of the OSI model)http://en.wikipedia.org/wiki/TCP/IP_model#Link_Layer