RCWA Online Practice Questions

Explanation:
RSSI (Received Signal Strength Indicator) is a key measurement representing the power level of a received RF signal. It is typically displayed in dBm (decibel-milliwatts), a logarithmic unit that expresses the power relative to 1 milliwatt. In Wi-Fi systems, RSSI values usually range between C30 dBm (excellent) and C90 dBm (very weak).
According to the RUCKUS One Online Help and the RUCKUS Analytics 3.5 User Guide, signal strength metrics shown in dashboards, client views, and RF reports are represented in dBm for consistency across platforms. This allows network engineers to correlate signal levels with client connectivity performance and thresholds used for roaming or troubleshooting.
Other units such as dBi refer to antenna gain, Watts measure absolute power (not typically used in client reporting), and Ohms measure resistance. Thus, dBm is the correct and standard unit used for RSSI measurement in RUCKUS and all IEEE 802.11-based systems.
Reference: RUCKUS One Online Help C Radio Settings and Signal Strength Indicators RUCKUS Analytics 3.5 User Guide C Client Signal and Noise Metrics RUCKUS AI Documentation C Understanding RSSI, SNR, and RF Metrics

Explanation:
ChannelFly is RUCKUS’s patented machine-learning-based dynamic channel selection algorithm. Unlike static or simple noise-based channel assignments, ChannelFly continuously measures actual throughput and learns the performance potential of each available channel.
According to the RUCKUS One Online Help C ChannelFly Overview and RUCKUS AI documentation, ChannelFly uses real-time capacity analysis instead of noise floor alone to choose channels that yield the highest throughput under current interference and load conditions.
BeamFlex+ manages antenna patterns, SmartCast handles QoS and traffic shaping, and PD-MRC enhances reception diversity―none perform dynamic channel learning.
Reference: RUCKUS One Online Help C ChannelFly Dynamic Channel Management
RUCKUS Analytics 3.5 User Guide C RF Performance and Channel Optimization Metrics
RUCKUS AI Documentation C Machine Learning in Channel Optimization

Explanation:
RUCKUS BeamFlex+ is an advanced adaptive antenna technology that dynamically selects from thousands of possible antenna patterns to optimize signal quality and performance for each client connection. Unlike Transmit Beamforming (TxBF), which depends on feedback from client devices that must support specific beamforming protocols, BeamFlex+ operates entirely on the access point side.
The key advantage of BeamFlex+ is that it does not require any client-side support or compatible drivers. It continuously analyzes signal characteristics and client locations to select the optimal antenna pattern in real time, enhancing both range and throughput without additional client configuration.
According to the RUCKUS One Online Help and RUCKUS AI documentation, BeamFlex+ combines adaptive antenna pattern selection with polarization diversity (PD-MRC) to improve performance in dynamic environments. In contrast, Tx Beamforming requires explicit feedback (channel state information) from clients―limiting its effectiveness when clients lack driver or chipset compatibility.
Thus, the correct answer is D, as BeamFlex+ provides all the benefits of adaptive beamforming without the need for client-side dependencies.
Reference: RUCKUS One Online Help C BeamFlex+ and Antenna Optimization Features RUCKUS Analytics 3.5 User Guide C RF Optimization Metrics and BeamFlex+ Insights RUCKUS AI Documentation C Advanced Antenna Technologies (BeamFlex+ vs TxBF)

Explanation:
In non-proxy RADIUS mode, the SmartZone controller does not act as an intermediary for authentication requests. Instead, each access point (AP) communicates directly with the RADIUS server for client authentication.
According to RUCKUS One Online Help C WLAN Authentication Modes (Proxy vs Non-Proxy), the key requirement is that each AP must be defined as a RADIUS client in the RADIUS server configuration. If not, authentication requests from the APs are rejected because the server does not recognize their source IPs or shared secrets.
This behavior differs from proxy mode, where only the SmartZone controller needs to be added as a RADIUS client. Port numbers (1812/1813) and encryption types remain standard, and both 802.1X and MAC authentication are supported.
Therefore, authentication failure in this scenario occurs because each AP must be authorized individually in the RADIUS server when non-proxy mode is used.
Reference: RUCKUS One Online Help C Proxy and Non-Proxy RADIUS Authentication Configuration RUCKUS Analytics 3.5 User Guide C Authentication Log Analysis and Proxy Modes RUCKUS AI Documentation C WLAN AAA Communication Paths and RADIUS Modes

Explanation:
Chanalyzer is a specialized RF spectrum analysis tool developed for use with Wi-Spy spectrum analyzers. It is used to visualize and validate Wi-Fi and non-Wi-Fi interference sources across the 2.4 GHz and 5 GHz bands.
According to the RUCKUS One Online Help C Spectrum Analysis and RF Interference Tools, spectrum analysis tools like Chanalyzer can detect non-802.11 interference sources such as microwave ovens, Bluetooth devices, DECT phones, and radar signals. While RUCKUS APs have built-in spectrum analysis mode, Chanalyzer provides external, high-resolution spectrum visualization that helps confirm interference sources in physical environments.
In contrast, RUCKUS Wi-Fi Planner (or Wi-R Planner) is used for predictive RF design and coverage estimation, not live interference detection. The WLAN discovery tool identifies SSIDs and basic network parameters but cannot detect non-Wi-Fi signals.
Therefore, the correct answer is D (Chanalyzer) ― the standard tool for verifying valid Wi-Fi operation and identifying non-Wi-Fi interference sources.
Reference: RUCKUS One Online Help C Spectrum Analysis Overview and External Tool Support RUCKUS Analytics 3.5 User Guide C RF Performance and Noise Source Detection RUCKUS AI Documentation C RF Troubleshooting and Spectrum Validation