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| Certification Vendor: | Cisco |
|---|---|
| Exam Name: | Implementing and Operating Cisco Wireless Core Technologies |
| Exam Number: | 350-101 |
| Real Exam Qty: | 90–110 |
| Available Languages: | Japanese, English |
| Exam Duration: | 120 minutes |
| Exam Price: | USD 400 |
| Certificate Validity Period: | 3 years |
| Passing Score: | Pass/Fail |
| Exam Format: | Performance-Based, Multiple Choice, Drag-and-Drop |
| Related Certifications: | CCIE Wireless CCNP Wireless |
| Recommended Training: | Implementing and Operating Cisco Wireless Core Technologies Course |
| Exam Registration: | Pearson VUE Registration |
| Sample Questions: | Cisco 350-101 Sample Questions |
| Exam Way: | Online proctored or onsite at Pearson VUE test centers |
| Pre Condition: | No formal prerequisites; recommended knowledge of enterprise wireless networking |
| Official Syllabus URL: | https://www.cisco.com/site/us/en/learn/training-certifications/exams/wlcor.html |
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問題 #67
What does a low SNR value result in?
答案：C
解題說明：
TheSignal-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 errorsis 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 windowsis 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 featuresis 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 reliabilityis the opposite of what happens when SNR is low. Low SNR leads to unreliable communication, not improved reliability.
Therefore,Option Dis correct, as a low SNR results in decreased data integrity due to possible errors in the transmission process.
問題 #68
A wireless engineer must manage a scheduled maintenance window for a mesh network within a network that uses Cisco Catalyst Center as the primary monitoring solution. The engineer must coordinate downtime and verify that all services resume as intended after planned tasks are complete. How does the engineer avoid unnecessary alerting in Cisco Catalyst Center throughout the maintenance window?
答案：B
解題說明：
In Cisco Catalyst Center,device suppressionis the recommended method to prevent unnecessary alerts during planned maintenance windows. By enabling device suppression, the system temporarily suspends monitoring and alert generation for the selected devices while allowing telemetry collection to continue. This ensures that maintenance operations, such as firmware upgrades, configuration changes, or physical mesh AP servicing, do not trigger false-positive alarms. Once the maintenance window concludes, alerts resume automatically, and the engineer can verify that all services are operational and that no critical issues were overlooked.
Disabling telemetry on the WLC (option A) is not advised because it prevents visibility into device health and network performance, potentially causing gaps in monitoring data. Using SWIM (option B) is relevant for automated firmware updates but does not inherently suppress alerts during maintenance. Scheduling maintenance for devices (option C) without enabling device suppression may still generate alerts if the monitoring system detects device reboots or temporary unreachability.
Cisco wireless operational guides specifically highlightdevice suppression as the key tool for managing alerting behaviorduring planned events in mesh or enterprise WLAN deployments, providing a controlled approach to maintenance with minimal disruption to monitoring accuracy. Reference topic:Wireless Monitoring and Management - Catalyst Center, device suppression, scheduled maintenance, and alert control.
問題 #69
What defines RSSI in radio signal measurements?
答案：C
解題說明：
RSSI, or Received Signal Strength Indicator, is a measure of the detected power level of a radio signal at the receiver, expressed in dBm. It reflects the strength of the wireless signal received by the client or access point and is a critical metric for assessing coverage, link quality, and roaming decisions. Higher RSSI values (closer to 0 dBm) indicate stronger signals, while lower values (more negative) represent weaker signals. RSSI is used by Cisco wireless controllers and clients to make roaming decisions, select access points, and optimize transmit power levels. Option B, noise generated by interference, affects signal-to-noise ratio but does not define RSSI. Option C, QoS packet marking, pertains to network traffic prioritization, not RF measurements.
Option D, wireless radio service ID, refers to identifying services on a network and is unrelated to signal strength measurement. Understanding RSSI is fundamental in RF planning, AP placement, and troubleshooting wireless coverage issues. Cisco Wireless Core Technologies emphasize monitoring RSSI to maintain adequate signal levels across the deployment, ensuring seamless connectivity and performance in high-density or challenging RF environments. Reference topics:RF Fundamentals - RSSI, signal strength, link quality, roaming, RF planning.
問題 #70
What does a low SNR value result in?
答案：C
解題說明：
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.
問題 #71
Refer to the exhibit. A network engineer must create a PSK WLAN that will be anchored to the DMZ. After this WLAN is created, users cannot connect to it. Based on the output from the RA trace, which action must the engineer take to resolve the issue?
答案：D
解題說明：
The failure is occurring during WPA/WPA2 key management, not during mobility anchoring. The radioactive trace shows Failed to validate eapol mic. MIC mismatch followed by Failed to validate eapol key m2, which means the authenticator and supplicant derived different key material during the PSK handshake. Cisco's Catalyst 9800 client-connectivity troubleshooting maps this log pattern directly to a wrong password condition and lists the corrective actions as fixing the password on the endpoint or on the SSID/WLAN. The 11r MIC validation failed phrase does not automatically make 802.11r the root cause; it only shows that the failed MIC validation occurred while Fast Transition key logic was in use. Disabling 802.11r would be a workaround only for client capability or FT interoperability issues, but the trace points to PSK mismatch. Removing the anchor WLC would break the intended DMZ anchoring design, and matching WLANs on foreign and anchor is required for anchor deployments, but it would not produce this EAPOL M2 MIC failure. The correct remediation is to ensure the client-entered PSK matches the WLAN PSK.
問題 #72
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