On a WLAN that uses the Agile Controller as the admission control server, which of the following is NOT the cause of 802.1x authentication failures?
A . The key used by the Agile Controller to connect to the device is different from the key configured on the device.
B . The accounting interval is not configured.
C . Port 1813 is used on the server.
D . The matched authorization rule defines the action "deny".
Answer: B