Advance Your Career by Using Online JN0-452 Dumps

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May 5, 2025

Obtaining the JNCIS-MistAI-Wireless JN0-452 certification can help you demonstrate your expertise in Juniper solutions and advance your career in related industry. Using JN0-452 dumps as part of your study plan can help you identify knowledge gaps, improve your exam-taking skills, provide immediate feedback, and increase your chances of passing the JN0-452 exam. Juniper JN0-452 exam free dumps questions are available below.

Page 1 of 5

1. What is the purpose of Mist's Client Journey Timeline feature?

Display system logs of controller uplink status

Show step-by-step logs of client connection events (association, auth, DHCP, etc.)

Monitor Wi-Fi security compliance reports

Control SSID broadcast timers

2. A network engineer types “Why is John’s iPhone not connecting?” into the Marvis interface.

Which capability is primarily being used here?

Marvis Actions

Conversational Interface

Client Event Replay

Historical SLE Viewer

3. What is one key difference between Marvis Insight and Marvis Action?

Insights are used for firmware upgrades

Actions can make changes; Insights only explain issues

Insights trigger SNMP traps; Actions only log events

Actions are available only for 6 GHz networks

4. Which two network arbitration parameters would you adjust first to lower Voice Latency without increasing Channel Utilisation? Choose two.

EDCA Voice Access Category CWmin/CWmax

Beacon interval

RTS/CTS threshold

Minimum basic rate

Guard interval length

5. A large enterprise enables Mist’s WIPS features. During an audit, the team discovers an access point broadcasting the same SSID as the corporate network but connected to an unknown switch.

What type of threat is this, and how should Mist respond?

Rogue AP; Mist can detect and optionally contain it

Evil Twin; Mist can connect clients automatically to it

RF Interference; Mist will apply DFS to avoid it

Guest AP; Mist redirects all traffic via the captive portal

6. Which SLE interplay best highlights a trade‑off between Coverage and Capacity? Choose two.

Raising transmit power improves Coverage but may lower Capacity

Narrowing channel width improves SNR but reduces Capacity

Lowering minimum basic rate improves Capacity but weakens Coverage

Enabling 6‑GHz adds Capacity and Coverage equally

Turning off 2.4 GHz removes interference, boosting both

7. Which two radio resource management (RRM) parameters influence both roaming speed and SLE “Latency”? Choose two.

Over‑the‑Air (OTA) neighbour report dwell time

Channel reuse distance

Transmit‑power delta between adjacent APs

Beacon rate‑limiting at 50 pps

6‑GHz Preferred Scanning Channel (PSC) list length

8. A network administrator notices that the SSID “Guest-WiFi” is consuming too much airtime, especially in high-density areas. The site has 6 active SSIDs configured.

What could be contributing to the airtime issue, and what is a best practice to address it?

Replace the Guest-WiFi with a BLE overlay

Increase the minimum RSSI threshold for clients

Too many SSIDs generate excess beacon frames; consolidate and reduce SSIDs

Hidden SSIDs cause more broadcast traffic

9. Which three tasks are part of WLAN lifecycle “Optimization” and leverage RESTful API calls? Choose three.

Querying /sites/{id}/sles to monitor SLA trends

Executing /wlan/{id} PATCH calls to adjust Minimum Basic Rate

Posting /marvis/actions/run to pre‑stage a firmware roll‑back test

Automating PSK pool rotations via /psk/{pool_id}

Creating a guest SSID with “Tunnel‑to‑Edge” forwarding

10. 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?

Manual channel assignment

Band steering settings

Historical performance replay

Transmit Power Control via RRM

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11. What is a key function provided by Mist Webhooks?

Launch virtual SSIDs on-demand

Poll client status periodically via SNMP

Automate monthly license renewals via cloud

Notify external systems in real-time about events like AP disconnections

12. Which two operations are typical of WLAN lifecycle “Retirement” tasks? Choose two.

Revoking unused API tokens

De‑registering and factory‑resetting APs

Archiving SLE trends for SLA compliance

Re‑calibrating vBLE beacons

Upgrading firmware to the latest stable branch

13. What is the main purpose of Mist's Band Steering feature?

Prevent legacy devices from joining the network

Force all clients onto the same SSID

Encourage capable devices to use less congested 5 GHz or 6 GHz bands

Prioritize BLE communication for location tracking

14. Which two client metrics most influence the Mist Capacity SLE algorithm? Choose two.

Airtime utilisation per AP radio

Average TCP goodput per client

Collision percentage on uplink

Average SNR per client

Beacon corruption rate

15. Which 6‑GHz features most aid the SLE “Latency” while being transparent to legacy 802.11ac clients? Choose two.

Preferred Scanning Channels (PSC)

Lower‑Power Indoor (LPI) operation class

Automatic Frequency Coordination (AFC) database queries

320 MHz channel width support

6 GHz OCV fast‑connect

16. A technician is deploying Mist APs in a new office site. After plugging the APs into a PoE-enabled switch and verifying they receive DHCP addresses, the APs are not broadcasting any SSIDs.

What is the **most likely reason** for this behavior?

The APs need static IPs to function with the Mist cloud

The APs must be registered and assigned a configuration template in Mist Cloud

Marvis AI must first run an RF scan before enabling broadcast

The APs require CLI access to enable SSIDs manually

17. What is the primary benefit of using vBLE over Wi-Fi RSSI for location tracking in the Mist platform?

vBLE does not require Mist APs

Wi-Fi RSSI is more precise than vBLE

vBLE provides higher accuracy with directional antenna arrays

Wi-Fi RSSI does not require any configuration

18. A Mist administrator receives a notification stating: “Users in the East Wing are experiencing high DHCP failure rates.” This type of AI-generated message is an example of:

SLE alert

SNMP trap

Marvis Insight

AP health log

19. Which pair of Account‑Organization features best supports multi‑tenant MSP operations and minimizes configuration drift? Choose two.

Organization templates that clone WLAN and RF profiles across tenants

SAML role mapping with tenant‑scoped claims

Global PSK pool shared among all tenants

Bulk firmware policy pushing from master tenant to subscribers

20. What is the function of the WxLAN feature in Mist?

Assigns VLANs dynamically based on user/device identity

Encrypts data traffic using WPA3 only

Automatically tunnels guest traffic to the cloud

Extends wired VLANs into remote data centers

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21. An admin wants Marvis to suggest improvements but doesn’t want any changes made automatically.

Which execution mode should they use?

Manual Review

Auto Execution

Read-Only Mode

Bulk Push

22. A hospital is using Mist SLEs to monitor their wireless performance.

Which of the following SLEs would help them assess the real-time bandwidth experience of users downloading large medical files?

Coverage

Time to Connect

Throughput

Successful Connects

23. A company wants to track how long visitors spend near specific product displays and whether they return later.

Which Mist feature would support this use case?

Indoor navigation

Engagement analytics with heatmaps and dwell time

Turn-by-turn pathing

Proximity tracing

24. Which Modulation and Coding Scheme (MCS) transitions are most likely to trigger a Latency SLE breach during a video call on 5 GHz? Choose two.

From 256‑QAM 3/4 to 16‑QAM 1/2

From 64‑QAM 5/6 to BPSK 1/2

From 16‑QAM 1/2 to 64‑QAM 3/4

From QPSK 3/4 to 16‑QAM 3/4

25. Which REST API calls and Webhook event types enable a CI/CD pipeline to perform automatic rollback if post‑deployment Coverage SLE drops? Choose two.

GET /sites/{id}/sles?filter=coverage polled every 5 minutes

Webhook subscription for wireless.sle.coverage_breach events

PATCH /firmware_policies/{id} setting auto_rollback=true

Webhook subscription for rf.tx_power_change events

26. Which items must be configured during initial site turn‑up so that Marvis can later execute reactive troubleshooting on WLAN association problems? Choose three.

Enable Marvis Pro license at the organization level

Define a WxLAN policy that blocks “unauthorized‑IoT” role

Provide LLDP information on wired switches for AP ports

Set up a Mist Edge cluster for on‑prem guest tunnelling

27. Which WLAN security and Policy (WxLAN) combinations can simultaneously support IoT segmentation and guest isolation on a single AP? Choose three.

WPA3‑Personal SSID with label‑based Multiple‑PSK for IoT sensors

OWE open SSID mapped to Guest‑Internet WxLAN tag

WPA2‑Enterprise SSID using dynamic VLAN assignment per user role

WEP‑128 SSID for legacy barcode scanners with blanket ACLs

IPSec over WLAN tunnel for critical IoT devices

28. What is the main advantage of using a wider channel width (e.g., 80 MHz or 160 MHz)?

It increases signal range significantly

It allows higher data throughput

It decreases signal-to-noise ratio

It reduces the number of required access points

29. A client is consistently trying to connect to the Mist WLAN but fails during authentication.

Which built-in Mist troubleshooting tool can provide a step-by-step view of where the failure is occurring?

Historical SLE Summary

RF Spectrum Analyzer

Audit Log Viewer

Client Journey Timeline

30. What is the purpose of Mist Edge in a network deployment?

Backup cloud configurations locally during outages

Centralize AP firmware upgrades across organizations

Provide high-availability DHCP services over WAN

Enable on-premises traffic forwarding and privacy control

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31. After applying a new SSID configuration template to 150 branch sites, several sites begin reporting “no internet” issues. You open Marvis and ask, “What’s wrong with branch clients?” The AI responds: “High DHCP timeout rate at 26 locations after template push.” What likely caused this?

DHCP pool exhaustion at core

Wi-Fi password expiration

Marvis Minis interference

Incorrect VLAN/DHCP mapping in the new template

32. Which two webhook headers enhance security and reliability for event ingestion? Choose two.

X‑Mist‑Signature HMAC header

X‑Retry‑Count integer header

Content‑Type: text/html

Authorization: Bearer

X‑Marvis‑Action‑ID

33. In Mist WLAN, what is the recommended reason for keeping the number of SSIDs low at each site?

To reduce airtime consumption caused by excessive beacon broadcasts

To minimize the total number of VLANs used

To allow 802.1X to function correctly

To improve BLE scanning performance

34. A university deploys Mist Wi-Fi across multiple buildings. All users connect to a single SSID called “CampusWiFi.” However, students should only have internet access, while faculty should access internal systems like printers and servers.

What is the **best way** to implement this using Mist?

Create two SSIDs with different VLAN tags

Assign WxLAN roles based on RADIUS authentication and enforce role-based VLAN and policy controls

Set SLE scores differently for students and faculty

Use MAC address filtering for faculty and students

35. To satisfy a data‑sovereignty policy, a customer wants all Wi‑Fi analytics to be processed locally, yet still consume Marvis NLP from the cloud.

Which architecture satisfies both? Choose two.

Deploy Mist Edge in “Analytics” mode for on‑prem processing

Configure the APs to send syslog directly to a local collector

Enable the “Cloud anonymisation” toggle in org privacy settings

Use REST API /local_msp/logs to upload summaries nightly

Keep Marvis Pro license active at organization level

36. A site engineer must validate Marvis Pro reactive troubleshooting for PoE issues on access points.

Which prerequisites are required? Choose two.

LLDP Power via MDI TLV enabled on all switch ports

Marvis Pro license applied at the organization level

Activation of “Wired Assurance” SLEs on the site

Event‑Streaming to a third‑party NMS over syslog

37. Which pair of configuration objects must be cloned when copying a full site to a new tenant? Choose two.

WLAN objects

RF profiles

WxLAN policy tags

Organization‑level webhook secrets

REST API tokens

38. A Mist administrator observes that several APs in a conference room are showing increased retry rates and degraded SLE scores. Users report that Wi-Fi becomes slow during events.

What Mist feature is designed to help **automatically resolve** this kind of channel interference issue?

Marvis Actions

Manual SSID rebroadcasting

Fixed transmit power profiles

Roaming priority settings

39. A compliance policy demands continuous WIDS/WIPS monitoring and immediate notification through Events & Alerts when a rogue AP is detected.

What configurations satisfy both requirements? Choose three.

Enable “Rogue AP containment” in each WLAN object

Add a webhook filter for “wids.rogue_ap.detected” events

Configure Marvis Minis to perform hourly rogue scans

Raise the “Throughput” SLE threshold to 95 %

Map rogue‑related events to an alert profile with critical severity

40. In the Mist organization hierarchy, what is the primary purpose of the “Site” level?

Create API access tokens

Monitor the entire organization’s traffic

Represent a specific physical location with its own APs and settings

Manage global templates and user roles

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41. In a Juniper Mist deployment using Multiple‑PSK and WxLAN Policy, which activities occur before a guest user successfully reaches the captive portal? Choose three.

802.11 open authentication followed by association

Mapping the user’s PSK to a WxLAN policy tag

Marvis proactive alert identifying a “Captive‑portal connection issue”

REST API call that creates a short‑lived guest WLAN object

DHCP exchange that conveys the portal URL through option 43

42. Which Juniper Mist API capability best supports infrastructure‑as‑code (IaC) workflows for WLAN deployment? Choose two.

JSON schema returned from /swagger endpoint

Bulk import of site objects via /bulk/sites

WebSocket real‑time telemetry stream

Device config backup/restore API

CLI over SSH for APs

43. 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?

Signal attenuation due to distance

Roaming failure during authentication

Interference from neighboring APs or noise sources

Low channel width configuration

44. Which pair of Wi‑Fi security mechanisms can coexist on the same Mist AP without client impact? Choose two.

WPA3‑Enterprise with 802.11w (PMF required)

Multiple‑PSK under WPA2‑Personal

OWE (Opportunistic Wireless Encryption) guest WLAN

802.1X‑EAP‑TLS and WxLAN policy tags

WEP‑64 for legacy barcode scanners

45. What is the main advantage of using Mist SLEs over traditional network health metrics?

They are user-experience focused and track connection success, not just signal metrics

They measure SNMP uptime per AP

They only apply to the 2.4 GHz band for precision

They replace the need for authentication logs

46. Which two REST API methods are best for automating PSK rotation and verifying SLE recovery afterwards? Choose two.

POST /psk_pools/{id}/rotate

GET /sites/{id}/sles?filter=latency

PATCH /wlan/{id} with new passphrase field

DELETE /psk/{id} then recreate

GET /marvis/actions?type=authentication_error

47. Which operations are part of proactive troubleshooting that leverages Marvis Actions for upcoming firmware upgrades? Choose three.

Running predictive health checks on candidate sites

Forcing a single AP into firmware‑test branch

Scheduling a synthetic latency test via Marvis Minis

Bulk‑patching WLAN objects to enable 802.11k

Raising the “Capacity” SLE target by 10 %

48. Which of the following correctly describes a typical drawback of using 160 MHz channel width in Wi-Fi networks?

It supports only 2.4 GHz band

It limits the modulation type to BPSK

It disables MU-MIMO capability

It increases the chance of interference

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