Cisco 300-110 Exam Dumps

The Cisco Aironet 2800 Series APs feature a dual-radio architecture with a dedicated 5 GHz radio (slot 1) and a Flexible Radio Assignment (XOR) radio (slot 0) that can operate in either 2.4 GHz or 5 GHz, or be assigned to monitor mode for scanning functions. Since all existing SSIDs and services are 5 GHz only, the slot 1 (dedicated 5 GHz) radio is responsible for all current client connectivity and must remain in Client Serving mode to maintain uninterrupted service. The XOR radio (slot 0) is currently either operating as a secondary 5 GHz radio or idle. By setting the XOR radio to Monitor mode, it becomes a dedicated scanner that continuously scans all channels across both 2.4 GHz and 5 GHz spectrum for rogue AP detection, using the embedded CleanAir and WIDS capabilities. This covers the previously unmonitored 2.4 GHz band and provides supplementary 5 GHz monitoring. No additional APs need to be purchased because the existing AP's XOR radio is repurposed. Options A, C, and D either place slot 1 in a non-client-serving role (disrupting existing 5 GHz connectivity) or use the inappropriate Sniffer mode instead of Monitor mode for rogue detection. Reference: WLSD Study Guide --- Cisco 2800 XOR Radio Architecture, Monitor Mode for Rogue Detection, Flexible Radio Assignment (FRA).

An oil terminal presents specific wireless design constraints: the requirement is pervasive coverage (maximum geographic coverage) for low-bandwidth applications (casual web and email). These requirements prioritize coverage reach over throughput optimization. The correct approach is to keep all data rates enabled, including lower rates such as 6, 9, 12, and 18 Mbps --- because in an industrial environment with challenging RF propagation paths, reflective surfaces, and potential obstructions, lower data rates extend the functional coverage range of each AP. Web and email traffic does not require high data rates; even 1-6 Mbps is sufficient for these applications. Disabling rates below 54 Mbps (Option A) would dramatically shrink each AP's effective coverage area, requiring many more APs for pervasive coverage and failing the primary design objective. Assigning static maximum power without RRM auto-adjustment creates excessive co-channel interference. Disabling rates below 24 Mbps (Option C) still reduces coverage reach unnecessarily. Disabling 802.11n and 802.11ac MCS rates (Option D) prevents the AP from using high-efficiency modulation for nearby clients without coverage benefit. Auto power assignment combined with all rates enabled provides the optimal balance for pervasive industrial deployment. Reference: WLSD Study Guide --- Industrial WLAN Design, Coverage vs. Capacity Trade-offs, Data Rate Configuration for Pervasive Coverage.

In a Layer 1 passive wireless site survey using a channel analyzer tool (such as Metageek Chanalyzer or Cisco Spectrum Expert) in the 2.4 GHz spectrum, the chart that indicates the ratio of interference present during the capture duration is the Duty Cycle chart. The duty cycle chart displays the percentage of time that detected energy --- including both Wi-Fi and non-Wi-Fi signals --- is present on each channel. A high duty cycle on a channel indicates that the channel is occupied by transmissions for a significant portion of time, reducing available airtime for Wi-Fi clients. This chart directly communicates the ratio of interference because it shows what fraction of the observation period had detectable RF energy above the noise floor. Signal strength charts show amplitude (how strong), while duty cycle charts show temporal occupancy (how often) --- the latter is the correct metric for quantifying interference ratio. Reference: WLSD Study Guide --- Layer 1 Spectrum Analysis, Duty Cycle Chart Interpretation, Spectrum Analyzer Methodology.

Flex+Bridge mode is a specialized AP operating mode that combines two distinct Cisco wireless capabilities: FlexConnect (for local switching of client data traffic and central authentication via the WLC) and Bridge/Mesh mode (enabling wireless backhaul when no wired Ethernet uplink is available). In a branch environment without wired backhaul, a standard FlexConnect AP (Option D) cannot operate because FlexConnect still requires an Ethernet connection for its control plane. Bridge mode alone provides mesh backhaul but does not support the local switching with central authentication model required here. MAP (Option A) is a Mesh Access Point role for wireless backhaul, and RAP (Option C) is a Root Access Point with a wired connection --- neither meets the no-wired-backhaul requirement with local switching. Flex+Bridge uniquely satisfies both requirements: the Flex component allows locally switched VLANs to be bridged directly to the access layer without traversing the WAN, while the Bridge component enables the AP to use a wireless mesh link for its backhaul uplink. Central authentication is maintained via the CAPWAP control tunnel over the mesh link. Reference: WLSD Study Guide --- FlexConnect Design, Mesh Networking, Flex+Bridge Mode Configuration and Use Cases.

This question requires straightforward wireless capacity engineering calculation. The total throughput requirement is 100 users 1 Mbps per user = 100 Mbps aggregate. Each channel in the design can support 20 Mbps of usable throughput --- this is the per-cell, per-channel allocation defined in the design parameters, representing usable throughput prior to RF overhead as stated in the question. The number of channels required is therefore: total required throughput divided by throughput per channel = 100 Mbps 20 Mbps per channel = 5 channels. In practice, each channel corresponds to a non-overlapping frequency assignment in the 5 GHz band. With 5 channels and 20 Mbps per channel, the design provides exactly 100 Mbps of aggregate capacity for 100 concurrent users at 1 Mbps each. This calculation methodology is foundational to Cisco's high-density WLAN design approach, where the number of spatial streams, channel allocations, and AP placement are all derived from the per-user throughput requirement multiplied by the concurrent user population. Reference: WLSD Study Guide --- High-Density WLAN Capacity Planning, Per-User Throughput Calculation, Channel Planning and Spatial Reuse.