THE OSI & TCP/IP MODELS. Tan Alam School of IT Bond University. The OSI Model. Link . http://topicmaps.bond.edu.au/mda/internet/osi-model/@/users/rho/InTechI/. Physical Layer.
Controls communications between the Network layer and the Physical layer.
Serves as a translator between the application and the network.
Provides the interface for user software to interact with the operating system and network software that enable programs to use network services.
These two are frequently listed separately as DLL (Data Link Layer) and Physical Layer (this is sometimes separated out from the other protocols).
IP belongs to the Network layer of the OSI model and to the Internetwork layer of the TCP/IP suite.