What statement accurately describes the functions of the IEEE 802.1X standard?

A.
Port-based access control with support for EAP authentication and AES-CCMP encryption only

B.
Port-based access control with encryption key management and distribution

C.
Port-based access control with support for authenticated-user VLANs only

D.
Port-based access control with 802.3 and 802.11 LANs

E.
Port-based access control with permission for three frame types: EAP, DHCP, DNS.

Explanation:
the 802.1X standard is a port –
based access control standard.A Layer 2 authentication protocol called Extensible Authentication Protocol (EAP) is used within the 802.1X framework to validate users at Layer 2.The 802.11 – 2007 standard also requires the use of strong, dynamic encryption – key generation methods. CCMP/AES encryption is the default encryption method, while TKIP/RC4 is an optional encryption method.