You discover that the Cisco ISE is failing to connect to the Active Directory server. Which option is
a possible cause of the problem?
A.
NTP server time synchronization is configured incorrectly.
B.
There is a certificate mismatch between Cisco ISE and Active Directory.
C.
NAT statements required for Active Directory are configured incorrectly.
D.
The RADIUS authentication ports are being blocked by the firewall.