At which layers of the OSI model would you find the MAC address?

A.
The physical layer.

B.
The data link layer.

C.
The network layer.

D.
The transport layer.

Explanation:
The MAC address is a Data Link Layer address that is hard-coded to each network interface.
Incorrect Answers:
A: The Physical Layer deals with the physical characteristics of the transmission medium.
B: The Network Layer defines end-to-end delivery of data packets and defines logical addressing to accomplish this. The MAC address is a physical address is hard-coded to each network interface. It is not a logical address.
C: The Transport Layer defines several functions, including the choice of protocols, error recovery, and flow control. The MAC address is not required for any of these functions.