MACsec, which is defined in 802.1AE, provides MAC-layer encryption over wired networks. Which two statements about MACsec are true? (Choose two.)
A. Only links between network access devices and endpoint devices can be secured by using MACsec.
B. MACsec is designed to support communications between network devices only.
C. MACsec manages the encryption keys that the MKA protocol uses.
D. A switch that uses MACsec accepts either MACsec or non-MACsec frames, depending on the policy that is associated with the client.
