Which two requirements must be met to implement this change?

Users in an organization report issues about having to remember multiple usernames and passwords. The network administrator wants the existing Cisco ISE deployment to utilize an external identity source to alleviate this issue .

Which two requirements must be met to implement this change? (Choose two.)
A . Enable IPC access over port 80.
B . Ensure that the NAT address is properly configured
C . Establish access to one Global Catalog server.
D . Provide domain administrator access to Active Directory.
E . Configure a secure LDAP connection.

Answer: C,D