Which statement about 802.1X is true?

Which statement about 802.1X is true?

A.
MAB allows clients that do not support 802.1X to be authenticated based on their MAC
address.

B.
PEAP-MSCHAPv2 requires a client certificate.

C.
MDA does not allow multiple clients to be independently authenticated at the same
switch port if they are in different domains, or VLANs.

D.
EAP-TLS requires a client certificate.