Which layer of the OSI/ISO model handles physical addressing, network topology, line discipline, error
notification, orderly delivery of frames, and optional flow control?

A.
Physical

B.
Data link

C.
Network

D.
Session

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. It is concerned with local delivery of
frames between devices on the same LAN.Incorrect Answers:
A: The physical layer defines the means of transmitting raw bits rather than logical data packets over a physical
link connecting network nodes.
C: The session layer protocols set up connections between applications; maintain dialog control; and negotiate,
establish, maintain, and tear down the communication channel.
D: The session layer provides the mechanism for opening, closing and managing a session between end-user
application processes, i.e., a semi-permanent dialogue.

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