Refer to the exhibit.
An AP is connected to a cluster of controllers. An AAA server provides all authentication and authorization functions for wireless users. A wireless user connects to an AP, and Active User Anchor Controller (A-UAC) and Standby UAC (S-UAC) tunnels are built from the AP to the respective controllers in the cluster.
Why would an administrator create four VRRP groups with four Virtual IP (VIP) addresses in the cluster?