Important Cisco 350-101 WLCOR Exam Questions

Answer: A

Explanation:

In wireless networks, the 20 MHz channel width is the standard and narrowest channel allocation in the 2.4 GHz frequency band. Using narrower channels reduces adjacent-channel interference and allows for better coexistence in high-density environments, which is particularly important in the crowded 2.4 GHz spectrum. A 20 MHz channel uses less RF bandwidth than 40 MHz or 80 MHz channels, providing more non-overlapping channels (channels 1, 6, and 11 in 2.4 GHz) to reduce co-channel interference. Option B is incorrect, as channel width does not inherently increase authentication handoff frequency; handoff behavior is determined by RSSI, client roaming thresholds, and 802.11r fast roaming settings. Option C describes client reassociation support, which is handled by the wireless controller and client firmware, not the channel width itself. Option D is incorrect because wider channels (40 MHz, 80 MHz) provide higher throughput than 20 MHz, at the expense of increased interference potential. Cisco Wireless Core Technologies emphasize that 20 MHz channels are preferred for dense deployments in the 2.4 GHz band to maximize non-overlapping channels and reduce interference, ensuring predictable coverage and reliable client connectivity. Reference topics: RF Fundamentals --- 20 MHz channels, 2.4 GHz spectrum planning, interference management, channel allocation.

Answer: D

Explanation:

The Signal-to-Noise Ratio (SNR) is an important metric used to determine the quality of a wireless signal. It compares the strength of the signal to the level of background noise. A low SNR indicates that the signal is weak relative to the noise, leading to poor signal quality.

Option D: Decreased data integrity with possible errors is the correct answer. When SNR is low, the quality of the data transmission is compromised. The noise interferes with the signal, leading to potential data errors and a decrease in data integrity. This can cause packets to be lost or corrupted, requiring retransmissions, and reducing the overall performance and reliability of the network.

Option A: Scheduling of firmware maintenance windows is not directly related to SNR. Firmware maintenance is unrelated to signal quality, though it might be necessary for other reasons, such as performance optimization or bug fixes.

Option B: Activation of automatic failover features is typically used in scenarios where there is network equipment failure or poor connection quality, but it is not directly triggered by low SNR values.

Option C: Improved channel reliability is the opposite of what happens when SNR is low. Low SNR leads to unreliable communication, not improved reliability.

Therefore, Option D is correct, as a low SNR results in decreased data integrity due to possible errors in the transmission process.

Answer: B

Explanation:

Cisco Catalyst Center Assurance is the correct solution because the requirement is centralized, scalable, multi-site client monitoring with aggregated health and troubleshooting data. Cisco states that Catalyst Center Assurance provides a Client health dashboard and supports both wired and wireless clients. It is specifically used to obtain a global view of all client device health and determine whether issues require action.

This directly matches the need for monitoring clients across branch locations and responding faster during performance degradation. Catalyst Center Assurance also provides location-based visibility, health scoring, client trend analysis, onboarding failure reasons such as AAA or DHCP, and Client 360 views for detailed troubleshooting. Cisco documents that Client 360 provides detailed client connectivity troubleshooting, including what problem occurred, when it occurred, why it occurred, and whether the impact is isolated or widespread. Cisco's Catalyst Center data sheet further describes Network and Client Health dashboards as giving administrators a high-level overview of every network device and client, with expansion by geographical site, device list, client list, or topology. Syslog, WLC CLI logging, and a local WLC dashboard are useful operational tools, but they do not provide enterprise-scale assurance analytics. Reference topics: Wireless Monitoring and Management --- Catalyst Center Assurance, Client Health, Client 360, centralized wireless monitoring, and operational analytics.

Answer: A

Explanation:

The command that enables web-based client authentication on the WLAN is security web-auth. Cisco's Catalyst 9800 Web-Based Authentication guide shows the WLAN configuration workflow: enter WLAN configuration mode, disable WPA security for the open Layer 2 guest WLAN, then ''Enable web authentication for WLAN'' using security web-auth. Cisco then applies the authentication list and parameter map with security web-auth authentication-list ... and security web-auth parameter-map ..., which refine the WebAuth method and portal behavior after WebAuth itself is enabled.

Cisco's LDAP authentication example mirrors the exhibit exactly: wlan webauth 2 webauth, removal of WPA/802.1X Layer 2 security, security web-auth, security web-auth authentication-list ldapauth, and security web-auth parameter-map global. Option B only creates or enters the WLAN profile with WLAN ID 2 and SSID name. Options C and D disable WPA2 and 802.1X AKM; they do not authenticate clients. Reference topics: Client Connectivity Configuration --- guest WLAN authentication, WebAuth, Layer 3 security, authentication lists, parameter maps, and Catalyst 9800 WLAN security configuration.

Answer: C

Explanation:

Cisco Catalyst Center AI Analytics provides predictive and proactive insights into wireless network behavior. Viewing trend deviation allows network administrators to identify abnormal patterns or shifts in network performance compared to historical baselines. This capability enables earlier detection of potential issues such as unusual client disconnections, spikes in interference, or unexpected throughput degradation. By monitoring deviations, administrators can proactively troubleshoot and resolve problems before they impact user experience. Option A, server time synchronization, is unrelated to trend analysis. Option B, exporting event thresholds, is a reporting function, not a predictive monitoring feature. Option D, backing up logs, pertains to data retention but does not provide operational insight. Trend deviation analytics leverage historical and current performance metrics to generate alerts when behaviors fall outside normal parameters, enhancing operational awareness and enabling faster remediation. Cisco Wireless Core Technologies emphasize using AI-driven analytics for continuous monitoring, anomaly detection, and trend-based alerts, which improves network reliability and reduces downtime in large-scale enterprise deployments. Reference topics: Wireless Monitoring and Management --- Catalyst Center AI Analytics, trend deviation, anomaly detection, proactive wireless monitoring.