A customer called into the support center with a problem ticket that involves wireless clients having to reauthenticate when they are walking around their office. After further investigation, it was discovered that the customer has two controllers in an N+1 deployment. Which action must the engineer take to troubleshoot the issue?

A customer called into the support center with a problem ticket that involves wireless clients having to reauthenticate when they are walking around their office. After further investigation, it was discovered that the customer has two controllers in an N+1 deployment. Which action must the engineer take to troubleshoot the issue?
A . Verify that the wireless controllers are in the same mobility group and that the access points are all on the primary controller.
B . Under the SSID, make sure that 802.1 Iris configured and running for the clients.
C . Make sure that the SSID has the authentication set to 802.1x with Cisco Centralized Key Management so the data clients can roam seamlessly.
D . Verify the access points are spread out between the primary and secondary controller and that the controllers are in the same mobility group.

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Answer: D