300-110 Exam Dumps - Cisco CCNP Wireless Questions and Answers

When configuring high availability on a Cisco access point, the AP can be configured with a maximum of three controllers: a primary controller, a secondary controller, and a tertiary controller. This three-tier hierarchy defines the failover order — the AP first attempts to join its primary controller, then the secondary if the primary is unavailable, and finally the tertiary if both the primary and secondary are unreachable. After exhausting all three configured options, the AP enters a discovery process to find any available controller. This three-controller configuration (primary, secondary, tertiary) allows network engineers to implement N+1 redundancy where critical APs can be directed to specific backup controllers in a deliberate sequence. Limiting the configuration to only 2 controllers (as stated in Option B which would be incorrect) would reduce redundancy options for environments with geographically distributed controllers requiring specific failover paths. Reference: WLSD Study Guide — AP High Availability Configuration, Primary/Secondary/Tertiary Controller Assignment, AP Failover Design.

Designing for 50-100 clients per cell with 5 Mbps minimum throughput and no 802.11b clients requires two critical optimizations. First, setting minimum mandatory data rates to 12-18 Mbps (Option A) removes legacy lower data rates from the AP ' s supported rate set. When 1, 2, 5.5, and 11 Mbps rates are disabled and 12 Mbps becomes the minimum mandatory rate, legacy 802.11b clients are excluded from the cell, airtime efficiency improves dramatically, and clients connecting at higher rates use less channel time per frame, increasing effective capacity. Second, Flexible Radio Assignment (FRA) for 2.4 GHz reduction (Option D) is critical in high-density environments. FRA allows the WLC to dynamically reassign some 2.4 GHz radios to 5 GHz operation or monitor mode, reducing 2.4 GHz cell size and interference while increasing 5 GHz capacity in the high-density area. Option C directly contradicts the no-802.11b requirement. Option B (6 SSIDs per AP) is a management consideration but does not directly address throughput. Option E (80-160 MHz channels) would consume available spectrum, reducing the number of usable non-overlapping channels and worsening co-channel interference at high density. Reference: WLSD Study Guide — High-Density WLAN Design, Minimum Data Rate Configuration, Flexible Radio Assignment (FRA).

The hidden node problem is a classic RF design flaw that emerges when APs transmit at excessive power levels relative to the attenuation characteristics of the environment. In a brick-walled building, AP signals penetrate walls with significant attenuation. When an AP transmits at maximum power, its signal propagates far beyond the intended cell boundary and reaches client devices that may be physically near other APs but unable to detect the original transmitting AP due to wall attenuation between them. These clients can hear the distant AP ' s signal but cannot hear each other — making them hidden from one another. This leads to simultaneous transmissions, frame collisions at the AP receiver, and dramatic throughput degradation. The 802.11 CSMA/CA mechanism depends on all stations being able to sense the medium before transmitting; hidden nodes defeat this mechanism entirely. The WLSD curriculum consistently identifies excessive AP transmit power in high-attenuation environments as a primary cause of hidden node conditions. The solution is to reduce AP transmit power so that cell sizes remain appropriate for the physical environment. Reference: WLSD Study Guide — RF Design Fundamentals, Hidden Node Problem, Transmit Power and Cell Size Optimization.

Cisco ' s Embedded Wireless Controller (EWC) architecture is the ideal solution for small deployments with strict budget constraints where only the access points can be replaced. EWC is a controller function that runs directly within the Cisco Catalyst 9100 Series access point itself — eliminating the need for a dedicated physical or virtual WLC appliance. The APs serve dual roles as both the wireless radio infrastructure and the controller platform. The unified model (Option B) requires a dedicated hardware WLC such as the 9800 series, exceeding the customer ' s budget. Fabric (Option C) requires Cisco DNA Center and SD-Access infrastructure, making it cost-prohibitive for a small deployment. Cloud (Option D) requires ongoing subscription fees that may not fit a fixed one-time budget. EWC provides enterprise-grade features including centralized SSID management, RRM, and client mobility within the AP cluster — all without additional controller hardware investment. This makes it the canonical solution for SMB migrations from autonomous deployments. Reference: WLSD Study Guide — Controller Deployment Models, Embedded Wireless Controller Architecture, SMB and Branch Wireless Design.

In Cisco mesh networking architecture, access points are classified into two primary roles: Root Access Points (RAP) and Mesh Access Points (MAP). A RAP is an access point that maintains a wired Ethernet backhaul connection back to the network infrastructure, while a MAP operates wirelessly, relying on mesh backlinks to upstream RAPs. When an engineer needs to change an AP mode — such as switching to bridge mode to extend the mesh — the AP role must first be defined correctly. The AP must be designated as a RAP before any mode-level configuration changes are applied. This sequencing is critical because the AP role defines the fundamental backhaul path; changing the mode without first establishing the role results in misconfiguration and potential connectivity loss. The RAP communicates directly with the wired infrastructure via its Ethernet port, making it the gateway for all downstream MAPs in the mesh topology. Options A (monitor), C (bridge), and D (local) refer to AP modes, not roles, and cannot be configured until the role is properly defined. Reference: WLSD Study Guide — Mesh Networking Fundamentals, Outdoor Wireless Design, AP Role and Mode Configuration.

To support high availability with client SSO (Stateful Switchover) and no interruption to live services during failover, the design must incorporate two requirements. First, redundant WLCs (Option A) are essential — without a physical standby controller, there is no entity to take over when the primary WLC fails. In an SSO configuration, one WLC is active and one is standby, and the standby must be ready to assume the active role instantaneously. Second, the high availability pair requires one of the WLCs to have a valid AP count license (Option B). In a Cisco WLC SSO pair, the standby controller ' s AP count license applies when it becomes active — without a valid license on at least one WLC in the pair, APs cannot join after failover. A 10-second RTT maximum (Option C) is a latency requirement for the redundancy link but is not a primary design requirement that addresses the overall high availability architecture. A back-to-back direct connection (Option D) is one way to connect the redundancy ports but is not mandatory if a low-latency switch connection is used. Code version 7.5 or newer (Option E) is a requirement for specific legacy SSO platforms but not a general design principle. Reference: WLSD Study Guide — WLC SSO High Availability Design, AP License Requirements, Redundant Controller Architecture.

Cisco Catalyst Center uses a tiered licensing model — Essentials and Advantage — applied to both switching and wireless infrastructure. To enable a fully fabric-enabled (SD-Access) deployment with centralized management, the Cisco Catalyst Advantage license is required across all device types. The Advantage tier unlocks Software-Defined Access fabric capabilities including macro and micro-segmentation, integration with Cisco ISE for policy enforcement, AI/ML-driven analytics via DNA Spaces and Assurance, and automated provisioning. The Essentials license provides only basic device management, inventory, and software image management — it does not unlock SD-Access fabric functionality. Since the branch design specifically extends an existing fabric-enabled network, the Essentials tier for either the switch or APs would create a licensing gap preventing full fabric participation. Options B, C, and D all create asymmetric licensing that would partially disable fabric capabilities. The correct design mandates Catalyst Advantage for the Catalyst 9300 switch and all 25 APs. Reference: WLSD Study Guide — Cisco Catalyst Center Licensing, SD-Access Design, Fabric-Enabled Wireless Architecture.

When Cisco WLCs are configured to use multicast for mobility group communications, all WLCs participating in the same mobility group must be configured with an identical multicast group IP address. The mobility multicast mode allows a WLC to send a single multicast frame received simultaneously by all other WLCs in the group, rather than sending individual unicast copies to each peer. For this to function correctly, every WLC in the group must join the same IP multicast group address, and the underlying network infrastructure must be configured to support IP multicast routing or IGMP snooping for that specific group address. If any WLC is configured with a different multicast IP address, it will join a different multicast group and will not receive mobility messages from the other WLCs, effectively isolating it from the group ' s communication plane. Service port IP addresses (Option A) are unique per controller. Interface IDs (Option B) are locally significant identifiers. Management IP addresses (Option C) are unique per WLC and identify each peer in unicast configurations. Reference: WLSD Study Guide — Mobility Group Configuration, Multicast Mobility Messaging, WLC Peer Communication.

In Ekahau Site Survey ' s multi-floor predictive modeling workflow, alignment points are the critical mechanism that allows the software to understand the precise vertical spatial relationship between floors in a multi-story building. Once floor plans are imported with their scale correctly defined, alignment points must be placed on each floor at the same real-world physical location — such as a stairwell corner, elevator shaft, or structural column — so that Ekahau can accurately calculate vertical signal propagation and inter-floor RF bleed. Without alignment points, the software has no spatial reference to determine which area on Floor 2 is directly above a given point on Floor 1, making floor-to-floor signal bleed calculations geometrically impossible. Drawing coverage areas (Option A) is a post-AP-placement activity. Starting the auto planner (Option B) would attempt to place APs without the required spatial reference. Choosing AP models (Option D) is a subsequent step. Alignment points are a fundamental requirement for any predictive survey involving multi-floor buildings. Reference: WLSD Study Guide — Ekahau Predictive Survey Methodology, Multi-Floor Building Configuration, Signal Propagation Modeling.

When using Metageek Chanalyzer in conjunction with a Cisco CleanAir-capable AP for Layer 1 spectrum analysis, the AP must be configured in SE-Connect mode (Spectrum Expert Connect). SE-Connect mode enables the AP ' s CleanAir radio to operate as a dedicated spectrum analyzer, feeding raw spectrum data to the connected Chanalyzer software for visualization and analysis. In this mode, the AP does not serve any Wi-Fi clients and instead focuses all radio resources on spectrum scanning. Metageek Chanalyzer uses the SE-Connect mode specifically to receive the CleanAir ASIC ' s spectrum analysis data. Local mode (Option A) serves clients normally, only providing periodic CleanAir reports. Sniffer mode (Option B) captures 802.11 frames for protocol analysis and does not provide raw spectrum data to Chanalyzer. Monitor mode (Option C) performs WIDS scanning and RRM measurements but does not support the direct Chanalyzer integration. SE-Connect is the specific mode that enables external spectrum analysis software to use the CleanAir ASIC ' s spectrum data in real time. Reference: WLSD Study Guide — Cisco CleanAir Technology, AP Operating Modes, SE-Connect Mode for Spectrum Analysis.