Which OSI/ISO layer defines how to address the physical devices on the network?

A.
Session layer

B.
Data Link layer

C.
Application layer

D.
Transport layer

Explanation:
The data link layer is responsible for proper communication within the network components and for changing
the data into the necessary format (electrical voltage) for the physical layer.
Incorrect Answers:
A: The session layer protocols set up connections between applications; maintain dialog control; and negotiate,
establish, maintain, and tear down the communication channel.
C: The protocols at the application layer handle file transfer, virtual terminals, network management, and
fulfilling networking requests of applications.
D: The protocols at the transport layer handle end-to-end transmission and segmentation of a data stream.

Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, New York, 2013, p. 528