Which of the following best describes the Data-link layer of the OSI model?

You are employed as a senior administrator at ABC.com.
You are responsible for running training exercises for trainee administrators. You are currently
covering the layers of the Open Systems Interconnect (OSI) model.
You are explaining the Data-link layer.
Which of the following best describes the Data-link layer of the OSI model?

A.
The Data-link layer deals with the transmission and reception of the unstructured raw bit stream
over a physical medium.

B.
The Data-link layer controls the operation of the subnet.

C.
The Data-link layer deals with error-free transfer of data frames from one node to another over
the physical layer.

D.
The Data-link layer makes sure that messages are conveyed error-free, sequentially, and with
no losses or duplications.