When opportunistic key caching (OKC) is supported on the wireless network, what steps must occur before a successful roam is completed? (Choose 2)

A.
EAP authentication must be conducted between the supplicant and AS

B.
The AS must be queried for derivation of new PMK

C.
The authenticator must query the RADIUS server to validate the supplicant

D.
New open system authentication must be performed

E.
Supplicant and authenticator must establish a new PTK

Explanation:
OKC only requires one initial 802.1X/EAP exchange between the client and the authentication
server.fast secure roaming solution that is an enhancement of PMK caching. In PMK …A bidirectional security association exists between the authenticator and the supplicant.