Pass the Juniper JNCIS-MistAI JN0-452 Questions and answers with CertsForce

InJuniper Networks Mist AI Wireless, Radio Resource Management (RRM) is designed to optimize RF performance automatically while minimizing client impact. With the introduction ofWi-Fi 6E and the 6 GHz band, Juniper Mist follows industry standards and client behavior to ensure efficient and reliable operation. By default, Mist RRM uses thePreferred Scanning Channels (PSCs)in the 6 GHz spectrum.

The 6 GHz band introduces a very large number of available channels, which creates challenges for client discovery, scanning efficiency, and roaming speed. To address this, the IEEE definedPreferred Scanning Channels (PSCs)—a specific subset of 6 GHz channels that access points advertise and clients prioritize during active and passive scanning. These PSCs allow clients to discover networks faster without having to scan the entire 6 GHz channel set.

Juniper Mist RRM automatically selects and operates on these PSCs by default to:

Improve client discovery and association times

Reduce unnecessary scanning overhead

Enhance roaming performance

Maintain compatibility across a wide range of Wi-Fi 6E client devices

Mist continuously evaluates RF conditions using telemetry and AI-driven analysis, but it intentionally limits default operation to PSCs to balance performance, efficiency, and client interoperability. Administrators can override defaults and customize channel plans if required, but PSCs remain the recommended baseline for most deployments.

The incorrect options are explained as follows:

Option Bis incorrect because Mist RRM does not require manual primary channel selection by default.

Option Crefers to 2.4 GHz non-overlapping channels, not 6 GHz.

Option Drepresents the full 6 GHz channel range, which is not practical for default scanning or operation due to client limitations.

Therefore, the correct answer isthe preferred scanning channels (PSCs), which Juniper Mist RRM uses by default in the 6 GHz band to ensure optimal Wi-Fi 6E performance.

According to the Wi-Fi configuration with Mist Systems | HCD Consulting GmbH document, three available rate limiting options in the Mist UI are:

According to the Juniper Mist Wireless Deployment Service Datasheet1, a configuration template at the organization level can be applied to a site group, not to an individual site. Therefore, there is no option to mention the site in the config template at the organization level.

According to the Lecture 3 - Radio Frequency and Antenna Fundamentals - Part 2 document3, two layers that are different between Ethernet and Wi-Fi in the OSI networking model are:

Media access control (MAC) sub-layer, which is part of the data link layer and defines how devices access and share the wireless medium.

Physical layer, which defines how data is encoded and transmitted over the wireless medium.

InJuniper Networks Mist AI Wireless, access points must beclaimedto an organization in the Mist cloud before they can be configured, monitored, and managed. When deploying APs at scale, Juniper provides an efficient mechanism to onboardmultiple access points simultaneouslyusing anactivation code.

An activation code is abulk-claim methodgenerated within the Mist cloud portal. This code is typically associated with a purchase order or shipment and can represent dozens, hundreds, or even thousands of access points. When the activation code is applied to an organization, all APs tied to that code are automatically claimed at once. This approach is especially valuable for enterprise and campus deployments, where manual per-device onboarding would be impractical.

Once claimed using an activation code, APs can be assigned to sites, receive configurations, and leverageZero-Touch Provisioning (ZTP). As soon as the APs obtain network connectivity and reach the Mist cloud, they automatically download their configuration and become operational without further manual intervention.

The other options are incorrect for the following reasons:

QR codesare used for claimingindividual APs, typically during small deployments or troubleshooting scenarios.

Digital certificatesare used for secure authentication and communication but are not a method for claiming APs to an organization.

The Juniper Mist Mobile Applicationcan assist with onboarding and visibility but does not provide a bulk-claim mechanism for large numbers of APs.

Therefore, the correct and documented method for claimingmultiple Juniper Access Points simultaneouslyis touse an activation code, making optionAthe correct answer.

InJuniper Networks Mist AI Wireless, controlling client connection quality is a critical part of maintaining high Service Level Expectations (SLEs). One of the most effective ways to ensure good user experience is by enforcing aminimum acceptable RSSI (Received Signal Strength Indication)threshold for client devices. This functionality is implemented usingwireless traffic filteringat the WLAN level.

Wireless traffic filtering allows administrators to defineminimum and maximum RSSI thresholdsthat determine whether a client is permitted to associate or remain connected to an SSID. If a client’s RSSI falls below the configured minimum threshold, the AP can deny association requests or deauthenticate the client. This prevents low-signal or “sticky” clients from connecting at poor signal levels, which would otherwise result in excessive retries, low data rates, increased airtime consumption, and degraded performance for all users.

Mist applies these controls intelligently and surfaces their impact through AI-driven analytics. When low-RSSI clients are filtered, Mist can correlate improvements in throughput, latency, and roaming behavior directly to RF health and client quality metrics. This aligns with Mist best practices, which emphasize proactive client quality enforcement rather than reactive troubleshooting.

The incorrect options are explained as follows:

WLAN forwardingdetermines how traffic is bridged, tunneled, or NATed and has no impact on RSSI enforcement.

Geofencingis used for location-based services and RTLS use cases, not RF signal quality control.

WLAN rate limitrestricts bandwidth usage per client or SSID but does not evaluate or enforce signal strength requirements.

Therefore, the correct feature required to set an acceptable minimum RSSI for client devices iswireless traffic filtering, which directly controls association behavior based on signal quality and helps maintain optimal wireless performance.

In the Juniper Mist dashboard, theMarvis Actionspage serves as a centralized "proactive inbox" that identifies critical issues across the organization. However, the depth of information and the ability to interact with these findings are strictly tied to theMarvis Virtual Network Assistant (VNA) subscription.

The Mist dashboard provides a basic level of visibility even without a full Marvis license, allowing administrators to see that certain high-level categories (such as AP, Switch, or Gateway) have identified issues. This is designed to demonstrate the value of the AI engine. However, when you see alock symbolnext to sub-categories or specific Marvis Actions, it indicates that the organizational account does not have an active Marvis VNA subscription for those specific devices.

Without the subscription, the system will not permit the user to "drill down" into the root cause analysis, view historical event timelines, or access the specific remediation steps suggested by the AI. For example, while a standard Wi-Fi Assurance license might show that an AP is offline, the Marvis VNA subscription is what enables the detailed investigation—such as determining if the offline status is due to a cable failure, a bad PoE port on a switch, or a firmware mismatch.

To unlock these features and remove the lock symbols, aSUB-VNA(Virtual Network Assistant) subscription must be applied to the access points in the site. Once licensed, Marvis can provide full "conversational AI" capabilities, allowing you to ask natural language questions about the APs and giving you the interactive tools needed to resolve the issues identified in the Actions dashboard. Therefore, the presence of the lock icon is a direct indicator of a missing or expired subscription tier required for advanced AI-driven troubleshooting.

 According to the Cisco Catalyst 9800 Series Wireless Controller Software Configuration Guide1, RF templates are assigned to sites, which are logical groupings of devices based on physical location or other criteria. RF templates allow you to configure RF parameters such as channel width, transmit power, and data rates for multiple devices at once.

When deploying three WLAN 2.4 GHz networks in your US-based site while ensuring that each network frequency is unique and does not overlap with other frequency channels, you should use OFDM channels 1, 6 and 11. So the correct answers are B.1, D.6, and A.11.