How many layers are specified in the OSI reference model?
Seven. Many popular networking technologies divide the seven OSI Layers into sublayers, but these optional subdivisions are not specified within the OSI reference model.
The data-link layer communicates with which OSI layer in a peer node?
The Data Link Layer.
What is the OSI term for the interface between vertically stacked OSI layers?
The Service Access Point (SAP).
How many OSI layers operate end-to-end? List them.
Four: Transport, Session, Presentation and Application.
Which OSI layer is responsible for bit-level data encoding?
The Physical Layer.
Which is the only OSI layer not inherent to the Fibre Channel architecture?
The Network Layer.
Create a mnemonic device for the names and order of the OSI layers.
Any answer that helps the reader remember the names and the order of the OSI Layers is correct. A popular mnemonic device is "All People Seem To Need Data Processing".