What feature in Aruba wireless networks optimizes channel selection and power levels among access points?

Adaptive Radio Management (ARM) is the correct choice because it is specifically designed to enhance the performance of wireless networks by intelligently managing the radio frequencies and power levels of access points (APs). ARM facilitates the automatic selection of channels to minimize interference and optimize network performance. This means that when APs are deployed within the same environment, ARM continuously analyzes the environment and enables the APs to adapt to changing conditions, such as client load or background noise, to provide the best possible experience for connected devices.

The other options offer valuable functions, but they are not focused on optimizing channel selection and power levels. ClearPass provides security and policy enforcement for network access, Virtual AP allows for the creation of multiple virtual access points on a single physical AP but does not specifically manage radio resources, and Client Insights is related to analyzing client behavior and network performance instead of directly managing radio settings. Therefore, while each option serves a different purpose in the Aruba ecosystem, Adaptive Radio Management is the feature that specifically addresses the optimization of channel selection and power levels among access points.