When spectrum analysis mode is enabled on a RUCKUS Access Point, the AP's radios are temporarily dedicated to spectrum scanning and interference analysis, meaning they cannot serve wireless clients during that period. Therefore, new clients will not be able to join, and existing clients are typically disconnected.

According to the RUCKUS One Online Help -- Spectrum Analysis Tool and RUCKUS AI Documentation -- RF Monitoring and Optimization, spectrum analysis mode captures and reports RF energy utilization, identifying interference sources such as non-Wi-Fi devices, microwave ovens, or Bluetooth. The AP alternates its radio into ''sniffer'' mode to analyze RF characteristics, during which client association and data traffic handling are suspended.

The output is visualized through graphs and real-time utilization charts, not histograms. Furthermore, an AP can only scan one band (either 2.4 GHz or 5 GHz) at a time --- not both simultaneously.

Thus, the correct answer is A, since enabling spectrum analysis prevents new client associations while the AP is in scanning mode.

RUCKUS One Online Help -- Spectrum Analysis Overview

RUCKUS Analytics 3.5 User Guide -- RF Health and Interference Detection

RUCKUS AI Documentation -- Spectrum Monitoring and RF Analysis Tools