Your customer is having wireless VoIP problems. When the Cisco 7925 phones roam from AP1 to AP2, the voice drops out and comes back. The phones are set up for PEAP/WPA1-AES with CCKM to an external RADIUS server. The APs and WLAN are set up in FlexConnect mode. Which statement explains the issue? 

Answer options:

A. PEAP with WPA-AES is not supported with Cisco Centralized Key Management, use EAP-FAST.
B. The APs have been added to the FlexConnect group.
C. The APs have not been added to the FlexConnect group.
D. PEAP with WPA2-AES is not supported with Cisco Centralized Key Management, use LEAP.

C

Fast Secure Roaming via CCKM is supported only among APs within the same FlexConnect group.As the number of APs within a Flex group is limited (for example, on the 5508 WLC, to 25 APs), FlexConnect is not suited to large deployments. Reference: https://www.cisco.com/c/en/us/support/docs/collaboration-endpoints/unified-wireless-ip-phone-7925g/200032-How-to-get-your-792x-wireless-phones- per.html