An engineer is designing a wireless network to support high availability. The network will need to support the total number of APs and client SSO. Live services should continue to work without interruption during the failover. Which two requirements need to be incorporated into the design to meet these needs? (Choose two.)
A. controller high availability pair with one of the WLCs having a valid AP count license
B. WLC 7.5 code or more recent
C. redundant vWLC
D. 10 sec RTT
E. back-to-back direct connection between WLCs
Looks to be valid.
https://www.cisco.com/c/en/us/td/docs/wireless/controller/technotes/8-7/High_Availability_DG.html#pgfId-78138
Back-to-back Redundancy Port (RP) connectivity between the two WLCs, Redundancy Management Interface (RMI) connectivity to check peer and management gateway reachability.