RUCKUS RCWA Practice Test Questions Answers

Weak client connectivity at the edge of coverage is typically caused byinsufficient received signal strengthrather than AP transmit power limitations. Increasing AP power does not help if theclient device cannot transmit back effectively.

According toRUCKUS One Online Help – Outdoor RF Design and Antenna Optimization, the best corrective action is to usehigher-gain directional or sector antennas (D), which focus RF energy toward client areas to improvelink budgetandtwo-way communication.

RUCKUS Analytics 3.5 User Guide – RF Link Quality Metricsconfirms that directional gain antennas improve downlink and uplink SNR, enhancing stability without increasing interference footprint.

RTS/CTShelps mitigate collisions, andpolarity alignmentapplies to point-to-point backhaul, not client coverage.

Signal-to-Noise Ratio (SNR)directly influences themodulation and coding scheme (MCS)that can be used between a Wi-Fi client and AP. A higher SNR allows the AP to select higher-order modulations (e.g., 256-QAM or 1024-QAM), which increases throughput efficiency.

According toRUCKUS One Online Help – RF Signal and SNR Concepts, an SNR of around 25 dB or greater is typically required for high-rate modulation such as MCS 9 or above.

RUCKUS Analytics 3.5 User Guide – PHY Metricsconfirms that RUCKUS APs continuously adapt MCS levels based on SNR, optimizing link performance dynamically.

Lower SNR conditions force modulation downshifts (e.g., QPSK or BPSK), reducing data rates for reliability.

The exhibit shows avirtual SmartZone (vSZ)configuration running in a VMware environment withthree separate virtual NICs (vNICs), each mapped to a different port group:Management,Control, andCluster.

According toRUCKUS One Online Help – SmartZone Interface ConfigurationandRUCKUS AI Documentation – SmartZone High-Scale Architecture, this design is specific tovSZ-H (High-Scale)deployments, which requirethree distinct network interfacesfor distributed control, management, and cluster synchronization.

Thethree NIC mappingsconfirm physical or virtual separation of traffic for scalability and redundancy (AandE).vSZ-E(Essentials) requires onlytwo interfaces(Management and Control) and does not use a dedicated cluster interface, distinguishing it from vSZ-H (D).

There is no indication of a four-node cluster in the exhibit, and SmartZone appliances typically show node counts under the Cluster Dashboard, not at the NIC configuration stage.

Thus, based on the configuration, this is avSZ-Hsystem withthree NICs and three port groups, each serving a dedicated function.

PD-MRC (Polarization Diversity – Maximal Ratio Combining)is a patented RUCKUS technology that enhances Wi-Fi signal reception bylistening to client transmissions on both the horizontal and vertical polarization planes. This approach helps overcome signal degradation caused by multipath, reflections, and client device orientation.

According to theRUCKUS One Online HelpandRUCKUS AI technical documentation, PD-MRC dynamically selects and combines the signal from both polarization domains to maximize the received signal-to-noise ratio (SNR). This technology works synergistically withBeamFlex, RUCKUS’s adaptive antenna system, to provide optimal signal gain and link reliability per client.

SmartCastis used for traffic prioritization and QoS management,ChannelFlyhandles dynamic channel selection using machine learning, andTx Beamformingoptimizes transmit signal direction. However, none of these specifically analyze both horizontal and vertical planes simultaneously.

Therefore,PD-MRCis the correct answer—it provides improved reception performance and overall RF robustness, especially for mobile clients in variable orientations.

Tothrottle download speedsfor specific device types—such as ChromeOS devices—andassign them to a dedicated VLAN, the appropriate configuration is tocreate a Device Policyand apply it to thetarget WLAN.

According to theRUCKUS One Online Help – Device Policy Management, andRUCKUS AI documentation – Policy Control and Device Analytics, Device Policies can classify client devices based onoperating system, MAC OUI, or fingerprinting data. Once identified, administrators can enforce rate limits, VLAN tagging, and access restrictions for that device type.

By applying this policy to theSTUDENT SSID, all detected ChromeOS clients will have bandwidth limits applied and their traffic segmented into the configured VLAN for management and security isolation.

Other options—such asLayer 2 ACLsorApplication Control Policies—manage packet-level permissions or app-level prioritization, not per-device bandwidth or VLAN segmentation. Creating a new WLAN is unnecessary since RUCKUS policy management allows dynamic device-based enforcement on a single SSID.