A wireless administrator has configured a WLAN; however, the clients need access to a less congested 5-GHz network for their voice quality.
What action must be taken to meet the requirement?
To meet the requirement of providing clients access to a less congested 5-GHz network for their voice quality, the wireless administrator should enable Band Select.
Band Select is a feature in Cisco wireless LAN controllers that helps clients to connect to the best available frequency band for their needs. It directs clients to use the 5-GHz band over the 2.4-GHz band if the signal quality is better, which reduces congestion and improves performance.
Enabling DTIM (Delivery Traffic Indication Message), RX-SOP (Receiver Start of Packet), or AAA (Authentication, Authorization, and Accounting) override will not help in meeting the requirement of providing access to a less congested 5-GHz network for voice quality.
DTIM is a setting that specifies how often a wireless access point sends beacon frames to clients. It affects the power consumption of clients and the responsiveness of the network, but it does not improve voice quality.
RX-SOP is a feature that controls how a wireless access point listens for client packets. It can help to reduce interference from neighboring access points, but it does not provide access to a less congested 5-GHz network for voice quality.
AAA override is a feature that allows users to bypass the normal authentication process and be authenticated based on specific criteria. It does not have any direct relation to improving voice quality for clients.
Therefore, the correct answer is A. Enable Band Select.