Juniper JN0-452 Practice Exams
Last updated on Oct 22,2026- Exam Code: JN0-452
- Exam Name: Juniper Mist AI Wireless, Specialist (JNCIS-MistAI-Wireless)
- Certification Provider: Juniper
- Latest update: Oct 22,2026
A retail chain uses Mist’s LBS features to show promotions on a mobile app when customers enter the electronics zone. Recently, no promotions are appearing for users, despite BLE and Wi-Fi being enabled on their phones.
What should the admin check first?
- A . Whether the zone is using WPA3 Enterprise
- B . Whether the app has location and Bluetooth permissions enabled
- C . Whether DHCP leases are expiring too quickly
- D . Whether the Wi-Fi APs support 2.4 GHz
B
Explanation:
Location-based promotions rely on the **mobile app detecting BLE broadcasts**. Without proper permissions (especially on iOS), the app **won’t be able to receive or act on location data**.
A network engineer notices that a user is experiencing poor video quality despite being physically close to the AP. The RSSI is measured at -55 dBm, but the SNR is only 15 dB.
What is the most likely cause of the issue?
- A . Signal attenuation due to distance
- B . Roaming failure during authentication
- C . Interference from neighboring APs or noise sources
- D . Low channel width configuration
C
Explanation:
A strong RSSI (-55 dBm) but low SNR (15 dB) indicates there is high background noise or interference, not signal weakness. This degrades the usable signal quality and affects performance even at close range.
What is the function of the WxLAN feature in Mist?
- A . Assigns VLANs dynamically based on user/device identity
- B . Encrypts data traffic using WPA3 only
- C . Automatically tunnels guest traffic to the cloud
- D . Extends wired VLANs into remote data centers
A
Explanation:
WxLAN allows Mist to apply role-based access policies and assign VLANs dynamically based on identity (e.g., employee, guest, printer), even on the same SSID.
A systems integrator is building a smart building dashboard and needs real-time updates when a VIP enters a restricted zone.
Which Mist capability enables this functionality?
- A . SLE Monitoring
- B . Marvis Client Timeline
- C . LBS Webhook with Zone Entry Events
- D . Wi-Fi 6 Client Efficiency Tracker
C
Explanation:
Mist’s **LBS Webhook** feature allows external systems to **receive zone entry/exit events in real-time**, enabling immediate reactions such as dashboard alerts or security triggers.
What is the primary role of a Captive Portal operating in "Redirect-Only" mode in Mist?
- A . Handles authentication within the Mist cloud
- B . Provides MAC address whitelisting for IoT devices
- C . Delivers RADIUS attribute enforcement
- D . Redirects clients to an external site without performing authentication
D
Explanation:
In Redirect-Only mode, Mist simply redirects clients to an external URL. It doesn’t perform authentication or policy enforcement ― this is handled by the external server.
During a site audit, it’s discovered that one AP is transmitting at a much higher power level than others, causing overlap and interference.
Which Mist feature is responsible for automatically adjusting this?
- A . Manual channel assignment
- B . Band steering settings
- C . Historical performance replay
- D . Transmit Power Control via RRM
D
Explanation:
Mist’s RRM (Radio Resource Management) includes automatic transmit power adjustment to reduce signal bleed and maintain optimal coverage and balance.
What is the primary benefit of using vBLE over Wi-Fi RSSI for location tracking in the Mist platform?
- A . vBLE does not require Mist APs
- B . Wi-Fi RSSI is more precise than vBLE
- C . vBLE provides higher accuracy with directional antenna arrays
- D . Wi-Fi RSSI does not require any configuration
C
Explanation:
Mist’s vBLE uses a 16-element directional BLE antenna array built into APs, enabling high-precision location tracking (~1C3 meters), which is more accurate than RSSI-based Wi-Fi location.
Which of the following correctly describes a typical drawback of using 160 MHz channel width in Wi-Fi networks?
- A . It supports only 2.4 GHz band
- B . It limits the modulation type to BPSK
- C . It disables MU-MIMO capability
- D . It increases the chance of interference
D
Explanation:
While 160 MHz channels allow for high-speed data transfer, they also increase the chance of overlapping with other signals and thus suffer from higher interference, especially in crowded environments.
Your security team receives an alert that users are connecting to a rogue SSID named “Corp-Guest.” You open Marvis and ask, “Are users connecting to suspicious APs?” Marvis replies that multiple clients near the lobby are associating to a non-Mist AP with the same SSID.
What is the most appropriate immediate step?
- A . Change the SSID name across all sites
- B . Disable 2.4 GHz radios on nearby APs
- C . Use Marvis to locate and contain the rogue AP
- D . Enable auto channel rebalance
C
Explanation:
Marvis can identify **rogue APs** and even assist with **containment actions** such as deauth packets. This is the best way to handle “evil twin” attacks or impersonation.
What is one key difference between Marvis Insight and Marvis Action?
- A . Insights are used for firmware upgrades
- B . Actions can make changes; Insights only explain issues
- C . Insights trigger SNMP traps; Actions only log events
- D . Actions are available only for 6 GHz networks
B
Explanation:
Marvis Insights help identify and explain network problems; Marvis Actions go a step further by recommending or executing fixes.