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[Mar-2026] Verified Juniper Exam Dumps with JN0-253 Exam Study Guide [Q55-Q72]

[Mar-2026] Verified Juniper Exam Dumps with JN0-253 Exam Study Guide [Q55-Q72]

March 23, 2026 adminJN0-253, JuniperJN0-253 certified questions, JN0-253 Printable PDF, JN0-253 Testking exam questions, JN0-253 valid test topics pdfLeave a Comment on [Mar-2026] Verified Juniper Exam Dumps with JN0-253 Exam Study Guide [Q55-Q72]

[Mar-2026] Verified Juniper Exam Dumps with JN0-253 Exam Study Guide

Best Quality Juniper JN0-253 Exam Questions PrepAwayExam Realistic Practice Exams [2026]

NO.55 Using Juniper Mist, you want to claim multiple access points (APs) using a Web browser.
Where in the Juniper Mist Portal would you accomplish this task?

 
 
 
 
In Juniper Mist, allhardware device onboarding and claiming operations-including access points (APs), switches, and gateways-are performed under theInventorysection of the Mist Cloud Portal.
According to the Juniper Mist Cloud documentation, theInventorypage serves as the centralized location for device lifecycle management. It allows administrators to:
* Claim new devicesusing their serial numbers or activation codes.
* Batch import multiple APsvia manual entry or CSV upload.
* Assign claimed devicesto specific sites for configuration and management.
* Monitor device claim status, model type, firmware version, and cloud connectivity state.
The documentation specifies:
“To onboard or claim multiple access points in the Mist Cloud, navigate toOrganization # Inventory, then clickClaim Devices. Enter or paste serial numbers of the APs you want to add, and assign them to the appropriate site.” Other options are incorrect because:
* Subscriptionsmanages licensing and service entitlements.
* Devicesshows active device status per site but does not handle claiming.
* Client Onboardingis used for guest access or authentication workflows, not hardware management.
Therefore, the correct answer isInventory (C).
References:- Juniper Mist Cloud Administration Guide- Juniper Mist Access Point Onboarding and Inventory Management Documentation- Juniper Mist AI Configuration and Setup Guide

NO.56 Which two functions are provided by the Juniper Mist REST API? (Choose two.)

 
 
 
 
The Juniper Mist REST API primarily provides functions for Juniper Mist configuration and historic statistics monitoring. According to the Juniper Mist documentation and API reference, the REST API allows users to automate configuration changes and retrieve historical data for analysis and reporting. Specifically,
“configuration” functions include creating, updating, and deleting sites, devices, SSIDs, VLANs, templates, and user roles through API calls. “Historic statistics monitoring” refers to the API’s capability to pull time- series analytics on network and device performance, enabling users to query device usage, client events, SLE metrics, and application data over customizable timeframes.
Real-time statistics and event-driven monitoring are typically accessed via Mist’s WebSocket API, not the REST API. The REST API focuses on configuration management and historical data extraction for audit and trend analysis, supporting full automation and integration with third-party tools.
Verification:
These answers match the selections marked in your image (“Juniper Mist configuration” and “historic statistics monitoring”) and are verified per Juniper’s API documentation and feature matrix.
References:
Juniper Mist API Introduction
Mist API Sample Class
Juniper Mist Automation Guide
RESTful API Overview | Mist

NO.57 A user has reported a network outage. After locating the user, you find that the switch interface facing the user is down but there is no alert in the Mist UI. You want to ensure that in the future, you receive an alert when a switch interface is down. You have already verified that the Critical Switch Port Down alarm is configured and enabled on the Alerts Configuration page.
In this scenario, which action in the Mist UI will satisfy the requirement?

 
 
 
 
To ensure that you receive alerts when a switch interface goes down, you need to enable the Up/Down Port Alerts setting for the specific interface. This setting can be configured by navigating to the switch within the Mist UI and modifying the port configuration. Enabling this setting ensures that any changes in the port status, such as going down, will trigger an alert.
This is critical for proactive network monitoring and to promptly address any connectivity issues.

NO.58 You scheduled downtime to push the latest firmware to all the APs you deployed at the site. You verified that all of the APs are working fine. When you go back to work, you notice no complaints from the users. When you check the AP page, you notice that several APs have not rolled out with the latest firmware.
In this scenario, how does Marvis categorize this issue in the Marvis Action dashboard?

 
 
 
 
When several APs fail to update to the latest firmware during a scheduled downtime, Marvis categorizes this issue as a “non-compliant” action.
This categorization indicates that some APs are not adhering to the intended firmware version policy, which could potentially affect network performance or security. The non-compliant Marvis Action provides administrators with the necessary information to identify and rectify the issue, ensuring all APs are updated as required.

NO.59 What are two ways that Juniper Mist Wireless Assurance enhances troubleshooting capabilities? (Choose two.)

 
 
 
 
Juniper Mist Wireless Assurance revolutionizes network troubleshooting by implementing Predictive Analytics and Correlation Engine (PACE) and dynamic packet capture. According to the official Mist documentation, PACE applies advanced data science and machine learning to analyze real network events and classify them for root-cause identification. The Mist PACE engine proactively identifies issues by correlating over 150 client and AP state changes, enabling the system to surface recommendations and automate root- cause resolution. This allows IT teams to move beyond reactive troubleshooting towards predictive and automated network operations, reducing time-to-resolution and minimizing user impact.
Additionally, dynamic packet capture significantly streamlines troubleshooting efforts. Mist Wireless Assurance automatically detects anomalies or failures in user and network behavior and instantly initiates a packet capture. These packet captures are contextually tagged to the affected event, stored in the cloud, and are readily accessible for analysis. This process eliminates the need for on-site technicians with sniffers, as now every major incident already has an associated packet capture, captured at the right moment. This capability greatly reduces troubleshooting time and ensures that issues can be reproduced and isolated accurately.
Reference:
Juniper Mist Wireless Assurance Configuration Guide-Root cause analysis and PACE Juniper Mist Documentation-Dynamic Packet Captures

NO.60 Which operation does an HTTP POST perform?

 
 
 
 
An HTTP POST operation performs the “create” function in web communications. This method sends data to a server to create a new resource. For example, when you submit a form on a website, the data is sent to the server using a POST request, which then creates a new entry in the database.

NO.61 Which machine learning method uses unlabeled data sets?

 
 
 
 
InJuniper Mist AI, variousmachine learning (ML)techniques are applied across the platform to analyze network telemetry and improve performance insights. Among these,unsupervised learningplays a critical role in identifying patterns, trends, and anomalies in unlabeled datasets-data that has not been pre-classified or annotated.
According to theJuniper Mist AI and Machine Learning Overview:
“Unsupervised learning enables Mist AI to automatically detect abnormal patterns or clusters in large volumes of unlabeled network data, allowing the system to identify anomalies and optimize network behavior without human labeling.” This method allows Mist AI to autonomously recognize deviations in user experience, traffic behavior, or radio performance without prior definitions, helping to enhance predictive analytics and anomaly detection.
By contrast:
* Supervised learningrequires labeled training data.
* Reinforcement learninglearns through trial-and-error feedback loops.
* Cognitive learningis not a formal ML category-it refers to human-inspired reasoning.
Therefore, the correct answer isD. Unsupervised learning.
References:- Juniper Mist AI and Machine Learning Overview- Juniper Mist Cloud Architecture and AI Engine Guide- Juniper Mist Predictive Analytics and Correlation Engine (PACE) Documentation

NO.62 What should be specified in the session policy settings?

 
 
 
 
Thesession policy settingsin theJuniper Mist Clouddefine how long a user session remains active and how the system manages session expirations due to inactivity. These configurations help ensure bothsecurityand efficient resource managementacross the Mist Cloud portal and API sessions.
According to theJuniper Mist Cloud Administration and Security Configuration Guide:
“Session policy defines session timeout and inactivity timeout parameters, controlling how long users can remain logged into the Mist Cloud portal or API before re-authentication is required.”
* Session Timeout:Specifies the maximum duration a session can remain active, regardless of activity.
* Inactivity Timeout:Defines how long a session can remain idle before automatic logout.
These policies help maintain strong access security by reducing the risk of unauthorized access through stale sessions.
Other options such as password complexity (A, C) and two-factor authentication (D) are configured under authentication and access policies, not session policies.
Therefore, the correct answer isB. The duration for session timeout and inactivity timeout.
References:- Juniper Mist Cloud Administration and Security Configuration Guide- Juniper Mist Organization Access and Authentication Policy Documentation- Juniper Mist Cloud Operations and Management Overview

NO.63 As an organization administrator, what are two ways to configure additional layers of security for administrator logins? (Choose two.)

 
 
 
 
Enable Two-Factor Authentication (2FA): Adding 2FA to administrator logins significantly enhances security by requiring a second form of verification in addition to the password, making unauthorized access more difficult.
Enable a Password Policy: Implementing a strong password policy ensures that passwords meet certain complexity and length requirements, reducing the risk of brute force attacks.

NO.64 You are asked to create a label that will be applied to a WLAN template.
In this scenario, under which level should you create the label?

 
 
 
 
When creating a label to be applied to a WLAN template in Mist AI, you should create the label at the site level. This is because WLAN templates are designed to be associated with specific sites or site groups, allowing you to customize WLAN configurations per site. Creating labels at the site level ensures that these configurations are applied appropriately within the desired site context.

NO.65 Marvis has notified you that you have a bad cable.
What additional information does the Marvis Actions dashboard provide to help you solve the issue?

 
 
 
 
TheMarvis Virtual Network Assistant (VNA)in Juniper Mist AI uses real-time telemetry and AI-driven correlation to identify hardware and connectivity issues, including bad cable conditions. When a”Bad Cable” alert is raised, Marvis analyzes physical link metrics from the switch and AP-such as CRC errors, FCS drops, and link flaps-to isolate the root cause.
According to the Juniper Mist AI Operations Guide, theMarvis Actions dashboardprovides contextual insights into the issue, showing whether the fault lies in thephysical cableitself or theswitch portit is connected to. Specifically, the dashboard highlights:
* The affected device and port.
* Whether the degradation originates from theport hardwareor thecabling.
* Suggested corrective action (e.g., replace the cable or check switch hardware).
Marvis uses its AI-driven root cause analysis engine to distinguish between cable integrity problems and port failures by examining electrical signature anomalies and historical telemetry.
Options B, C, and D are incorrect because Marvis does not display cable category ratings or identify individual broken Ethernet pairs-it focuses on identifying and isolating the fault domain.
Therefore, the correct answer isA. If the port or cable is at fault.
References:- Juniper Mist Marvis Virtual Network Assistant User Guide- Juniper Mist AI Operations and Troubleshooting Documentation- Juniper Mist Actions and Insights Dashboard Overview

NO.66 Which protocol does Mist cloud use to send and receive data to connected access points?

 
 
 
 
Mist Cloud Communication Protocol: The Mist cloud platform uses HTTPS (Hypertext Transfer Protocol Secure) to communicate with connected access points. This ensures that the data sent and received is encrypted and secure, adhering to modern security standards(Juniper Networks).
Security and Reliability: Using HTTPS provides a secure channel over which configuration changes, updates, and monitoring data can be safely transmitted between the Mist cloud and the access points. This protocol is widely accepted and trusted for secure communications over the internet.

NO.67 Which two wired elements would be configured using an organization-level template? (Choose two.)

 
 
 
 
Two wired elements configured using an organization-level template in Juniper Mist are VLAN and DNS settings. Organization-level templates are designed to standardize and propagate common settings across all switches within an organization. As per official guides: “These templates can include VLANs and well-known services such as DNS (Domain Name System) that can be used across all devices within a site.” VLAN and DNS settings are defined once at the organization (or switch group) template and automatically inherited by all devices, ensuring consistency. Host name and role are set at an individual switch level, not globally via templates.
Reference:Campus Fabric Configuration Example , Mist Wired Assurance Configuration Guide , Organization Template Reference

NO.68 Which two statements correctly describe the encryption of traffic using Mist? (Choose two.)

 
 
 
 
AP and RADIUS Server Communication: By default, the communication between an Access Point (AP) and a RADIUS server is not encrypted. This can be configured to be encrypted, but it is not the default setting.
Wi-Fi Client and AP Communication: By default, the communication between a Wi-Fi client and an AP is encrypted, typically using WPA2 or WPA3, which ensures the data exchanged over the wireless network is secure.

NO.69 At which two configuration levels are WLAN objects created? (Choose two.)

 
 
 
 
Site Level: WLAN objects can be created at the site level, allowing specific configurations for different locations within an organization. This helps in customizing WLAN settings based on the unique requirements of each site.
Org Level: WLAN objects can also be created at the organization level, which provides a standardized configuration that can be applied across multiple sites. This ensures consistency in WLAN settings throughout the entire organization.

NO.70 Which parameter is beyond the scope of the Connectivity category when troubleshooting with Marvis Actions?

 
 
 
 
The duplex mismatch parameter is beyond the scope of Marvis Actions’ Connectivity category. According to the official Juniper Mist documentation, Marvis Actions within the Connectivity category are designed to troubleshoot common network connectivity issues for wireless clients, including DHCP failure, DNS failure, authentication failure, and ARP failure. These actions automatically detect and provide detailed insights about failures most likely to impact client onboarding, IP addressing, and network services. Duplex mismatch, on the other hand, is a wired networking issue where there is a disagreement between network devices (such as switches and end hosts) regarding duplex settings (half-duplex or full-duplex), and it typically causes performance problems like collisions and slow speeds. Marvis’s focus for the Connectivity troubleshooting category is wireless protocol-level connectivity and service reachability, so duplex mismatch falls outside its direct scope of detection and automatic remediation.
Reference:Juniper Mist Documentation – Troubleshooting Connectivity Issues with Marvis; Connectivity Actions Overview

NO.71 Exhibit:

Referring to the exhibit, which sub-classifier contributed the most to capacity issues?

 
 
 
 
In theJuniper Mist Wireless Assurance dashboard, eachService Level Expectation (SLE)is broken down intosub-classifiersto identify the specific causes of degraded user experience. For theCapacity SLE, Mist AI analyzes performance indicators related to access point utilization, airtime availability, client density, and radio congestion.
According to theJuniper Mist Wireless Assurance Analytics Guide, sub-classifiers within the Capacity SLE may include:
* WiFi Interference- measures co-channel and adjacent-channel interference.
* Capacity- monitors total bandwidth and airtime utilization.
* Network Issues- highlights backend transport or switching congestion.
* Excessive Client Load- indicates when too many clients are associated with a single access point or radio, leading to reduced throughput and contention.
In the exhibit, theExcessive Client Loadbar clearly shows the highest contribution to the Capacity SLE degradation. This means that the majority of capacity issues were caused byan overloaded access point or radio channelhandling more clients than optimal.
Therefore, the correct answer isD. Excessive Client Load.
References:- Juniper Mist Wireless Assurance SLE and Classifier Documentation- Juniper Mist AI Operations and Analytics Guide- Juniper Mist Cloud Dashboard Metrics Overview

NO.72 What is required for Marvis Minis to operate?

 
 
 
 
Marvis Minisis an advanced feature within the Juniper Mist AI ecosystem designed to performautonomous, synthetic network testing. It uses Mist Access Points (APs) to simulate client behavior-such as association, authentication, DHCP, DNS, and application reachability-to proactively detect service issuesbefore real users are affected.
According to theJuniper Mist Marvis Minis Deployment GuideandMarvis AI documentation, the key requirement for enabling Marvis Minis is that all participating access points must be running aminimum supported firmware versionthat includes the Minis agent functionality.
The documentation specifies:
“Marvis Minis requires APs running the minimum firmware version that supports synthetic testing. APs on earlier versions will not be capable of running Minis tests or reporting results to the Mist Cloud.” Additional subscriptions such asWAN Assurance,Premium Analytics, orWLAN templatesare not prerequisites for operation. WhileMarvis licensingmust be active, the feature itself relies primarily on compatible firmware within the Mist-managed APs.
Therefore, the correct answer isC. Minimum AP firmware- ensuring the APs are on a supported firmware release is essential for Marvis Minis functionality.
References:- Juniper Mist Marvis Minis Deployment and Configuration Guide- Juniper Mist AI Operations and Troubleshooting Documentation- Juniper Mist Wireless Assurance and Firmware Management Guide

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Juniper JN0-253 Exam Syllabus Topics:

Topic Details
Topic 1
  • Marvis Virtual Network Assistant AI: This domain introduces Marvis, an AI-powered assistant providing automated troubleshooting through intelligent actions, natural language queries, and specialized analytical tools for proactive issue resolution.
Topic 2
  • Juniper Mist Configuration Basics: This domain addresses initial setup including user accounts, device onboarding, organizational structures, subscription licensing, certificate management, and automated provisioning with labels and policies.
Topic 3
  • Juniper Mist Network Operations and Management: This domain examines operational features across Wi-Fi, Wired, WAN, Routing, and Access Assurance, delivering specialized management capabilities for different network infrastructure layers.
Topic 4
  • Juniper Mist Cloud Operations: This domain covers three API types (RESTful, WebSocket, Webhook) for programmatic integration, plus support resources including ticketing systems and documentation.
Topic 5
  • Juniper Mist Cloud Fundamentals: This domain covers Juniper’s cloud-native platform architecture, focusing on AI and machine learning capabilities for intelligent network management and real-world deployment scenarios.

 

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