Which Cisco technology improves the signal quality for clients at the edge of a cell by
optimizing beamforming?
Refer to the exhibit.

An engineer determined that during a recent controller failure, some APs did not failover to their secondary controller based on the network design, which has sufficient licenses for all APs. The controllers are not in a mobility group but have A records for their hostnames in DNS. Which setting needs to be addressed?
Which two wireless design principles help mitigate co-channel interference? (Choose two.)
What is the minimum recommended RSSI for designing a WLAN to support data applications?