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| Section | Objectives |
|---|---|
| Topic 1: AI-Driven Assurance and Marvis | - Network insights and anomaly detection - Marvis AI assistant capabilities |
| Topic 2: Mist AP Configuration and Deployment | - Site creation and AP onboarding - SSID configuration and policy application |
| Topic 3: Mist AI Architecture and Components | - Mist Cloud architecture overview - Access points, gateways, and management models |
| Topic 4: Troubleshooting and Operations | - Client connectivity troubleshooting - Wireless performance optimization |
| Topic 5: Wireless LAN Fundamentals | - 802.11 standards and RF basics - Channel planning and RF behavior |
| Topic 6: Security and Access Control | - Authentication methods (802.1X, PSK) - Policy enforcement and segmentation |
>> JN0-452 New Practice Questions <<
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NEW QUESTION # 18
What are two functions of Mist Radio Resource Management (RRM)? (Choose two.)
Answer: A,C
NEW QUESTION # 19
An administrator needs to track all administrative changes made in the Mist dashboard for a specific site over the last week for audit purposes. This includes who created a new WLAN, who modified an RF template, and when an AP was rebooted via the UI.
Where can this information be found?
Answer: C
NEW QUESTION # 20
Exhibit:
Referring to the exhibit, which client has the weakest connection to the WLAN?
Answer: B
Explanation:
InJuniper Networks Mist AI Wireless, the strength and quality of a client's wireless connection are primarily evaluated usingRSSI (Received Signal Strength Indicator)andSNR (Signal-to-Noise Ratio).
These two metrics are core inputs into multiple Wireless Assurance SLEs, including Coverage and Throughput, and are reliable indicators when determining which client has the weakest WLAN connection.
From the exhibit, the key metrics for each client are:
* Client 1: RSSI-81 dBm, SNR11 dB
* Client 2: RSSI -71 dBm, SNR 21 dB
* Client 3: RSSI -67 dBm, SNR 25 dB
* Client 4: RSSI -70 dBm, SNR 22 dB
In wireless design,lower (more negative) RSSI values indicate weaker signal strength, andlower SNR values indicate poorer signal qualitydue to higher relative noise. Among all listed clients,Client 1 clearly has the weakest connection, as it has both:
* Thelowest RSSI(-81 dBm), indicating it is farthest from the AP or experiencing significant attenuation.
* Thelowest SNR(11 dB), which suggests the signal is only marginally stronger than the background noise.
Mist best practices typically consider RSSI values below -70 dBm and SNR values below ~20 dB as suboptimal for reliable performance, especially for higher modulation schemes. Client 1 falls well below these thresholds, making it the most likely to experience low data rates, retransmissions, and degraded user experience.
Mist AI would flag this client as having poor coverage and may recommend actions such as:
* Improving AP placement or density
* Adjusting RF power or channel plans
* Enforcing minimum RSSI thresholds
Therefore, based on both RSSI and SNR,Client 1has the weakest WLAN connection, makingOption Dthe correct answer.
NEW QUESTION # 21
Marvis Minis is a feature that helps administrators understand the scope of a network issue.
What does it do?
Answer: D
NEW QUESTION # 22
Which signal modulation scheme provides the highest data rate level for 802.11ax devices?
Answer: B
Explanation:
InJuniper Networks Mist AI Wireless, understanding modulation schemes is essential for designing and operating high-performance Wi-Fi 6 (802.11ax) networks. Modulation directly affects how much data can be transmitted per symbol, and therefore determines the maximum achievable data rates under optimal RF conditions.
802.11ax introduces 1024-QAM (Quadrature Amplitude Modulation)as its highest supported modulation scheme. With 1024-QAM, each symbol encodes10 bits of data, which represents a significant increase compared to earlier standards. For reference:
* 64-QAM (used in earlier standards) carries 6 bits per symbol
* 256-QAM (introduced in 802.11ac) carries 8 bits per symbol
* 1024-QAM increases this to 10 bits per symbol
This higher bit density allows Wi-Fi 6 devices to achievehigher peak throughput, especially in environments with excellent signal quality. However, 1024-QAM requiresvery high Signal-to-Noise Ratio (SNR)and low interference to function reliably. As a result, it is typically achieved only when clients are close to the access point and RF conditions are clean.
Mist AI Wireless continuously monitors client RSSI, SNR, retransmissions, and modulation rates through advanced telemetry. Using this data, Mist can determine whether clients are successfully operating at higher modulation levels like 1024-QAM or are falling back to lower schemes due to RF impairments. This insight directly feeds into SLEs and AI-driven recommendations for RF tuning, AP placement, and channel planning.
The incorrect options are explained as follows:
* 64-QAMand256-QAMare valid modulation schemes but do not provide the highest data rates in 802.11 ax.
* 4096-QAMis not supported by the 802.11ax standard and is therefore invalid.
Thus,1024-QAMis the modulation scheme that provides thehighest data rate level for 802.11ax devices.
NEW QUESTION # 23
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