Which non-Wi-Fi interferer can be identified by Metageek Chanalyzer?

A customer has a centralized wireless deployment with N+1 high availability and few open authentication SSIDs configured. After failover, all APs are broadcasting all SSIDs, but the clients are assigned IP addresses from a different subnet. The WLANs on both WLCs are configured with the same dynamic interfaces. Which feature must be incorporated in the wireless design of the second controller?

An engineer must install an outdoor wireless network for an area with a direct line of sight. The outdoor APs are in an open area with a history of harsh weather. Which two parameters must the engineer consider to prevent an outdoor wireless outage? (Choose two.)

Guest anchoring is configured for a newly created SSID for your company. It has been noticed that the mobility tunnels are not up, and that MPING fails from your foreign WLC to the anchor WLC.
What is the reason that it is failing?

Refer to the exhibit. A network engineer has identified that during a recent controller failure, several APs failed over to the tertiary controller instead of the secondary controller. The configuration from one of the APs is provided. Which design consideration led to the issue?