Verified & Correct JN0-253 Practice Test Reliable Source May 07, 2026 Updated [Q36-Q60]

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Verified & Correct JN0-253 Practice Test Reliable Source May 07, 2026 Updated

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NEW QUESTION # 36
Exhibit:

Referring to the exhibit, how many sites have unused Marvis for Wireless subscriptions?

  • A. 0
  • B. 1
  • C. 2
  • D. 3

Answer: A

Explanation:
In theJuniper Mist Cloud, theSubscriptionspage provides administrators with detailed information about the status of service licenses and subscriptions associated with devices, sites, and organizations. This includes visibility into the number of active devices, sites, and anyunused subscriptionsacross the organization.
According to theJuniper Mist Cloud Licensing and Subscription Management Guide, the "Sites" section under Subscriptions Summary shows:
"The total number of configured sites within the organization and the number of sites that currently do not have assigned subscriptions." In the exhibit, the summary shows:
* 82 Sitestotal
* 15 Unusedsites
This indicates that15 sites currently have no active or assigned Marvis for Wireless subscriptions. The
"Unused" label under Sites refers specifically to the count of sites not yet utilizing their allocated subscription entitlements.
Therefore, the correct answer isB. 15.
References:- Juniper Mist Cloud Licensing and Subscription Management Guide- Juniper Mist Cloud Administration and Operations Documentation- Juniper Mist AI Service Subscription Overview


NEW QUESTION # 37
Which two statements are correct about the Juniper Mist Wired Assurance brownfield adoption workflow? (Choose two.)

  • A. DNS resolution must be working on the Juniper switch.
  • B. The same exact switch adoption CLI commands can be pasted into multiple different Juniper switches.
  • C. The administrator must have the Juniper switch claim code available.
  • D. The Juniper Mist QR code on the switch must be scanned by the technician.

Answer: A,B


NEW QUESTION # 38
You are asked to create a real time visualization dashboard which displays clients on a map.
Which two Juniper Mist functions would you use in this scenario? (Choose two.)

  • A. WebSocket
  • B. RESTful API
  • C. webhooks
  • D. Live View

Answer: A,D

Explanation:
To create a real-time visualization dashboard that displays clients on a map, use Live View and WebSocket APIs. The "Live View" feature in Juniper Mist provides a graphical, interactive map view of clients (devices) and assets as they move through a site, with location data updated in real time. The Juniper Mist WebSocket API enables developers and integrators to subscribe to client location topics and stream position data directly to custom dashboards. According to the documentation: "WebSockets open a bidirectional communication session for sending and receiving real-time event-driven responses... Useful in circumstances where you want to avoid browser refreshes and display real-time location data." Combining these allows you to build a dashboard showing live client positioning, as seen in sample dashboards and integration guides for Mist.
Reference:WebSocket API Overview | Mist Juniper Mist Automation and Integration Guid


NEW QUESTION # 39
How are Mist Alerts sent?

  • A. using a text message
  • B. using Skype
  • C. using e-mail
  • D. using Slack

Answer: C


NEW QUESTION # 40
Using the Mist UI, where do you look for high priority end-user issues on the network?

  • A. Occupancy Analytics
  • B. Network Analytics
  • C. Marvis Actions
  • D. Premium Analytics

Answer: C


NEW QUESTION # 41
What does the Predictive Analytics and Correlation Engine (PACE) of Mist AI use to understand the end-user experience?

  • A. Manual analysis
  • B. Machine learning
  • C. Network monitoring tools
  • D. User feedback

Answer: B

Explanation:
ThePredictive Analytics and Correlation Engine (PACE)is the core AI engine that powers theJuniper Mist Cloud. It is designed to continuously learn from real-time telemetry and user interactions across wireless, wired, and WAN networks to proactively identify anomalies and predict performance issues.
According to theJuniper Mist AI Cloud and PACE Architecture Documentation, PACE:
"Leverages machine learning and advanced analytics to correlate data across millions of network sessions, automatically identifying patterns that affect user experience." The engine continuously evaluates key Service Level Expectations (SLEs), such asTime to Connect, Throughput, andRoaming, to establish performance baselines and detect deviations before users notice them.
PACE doesnot rely on manual analysisoruser feedback, and it integrates telemetry rather than external monitoring tools to maintain a closed-loop feedback system for self-correction and optimization.
Therefore, PACE usesmachine learning (A)to understand, predict, and improve end-user experience across Juniper Mist-managed networks.
References:- Juniper Mist AI Cloud Architecture and PACE Overview- Juniper Mist AI Operations and Analytics Guide- Juniper Mist Assurance and Machine Learning Documentation


NEW QUESTION # 42
Exhibit:

Referring to the exhibit, which percentage of Coverage was unsuccessful?

  • A. 15%
  • B. 21%
  • C. 79%
  • D. 9%

Answer: B

Explanation:
InJuniper Mist Wireless Assurance, theCoverage SLE (Service Level Expectation)measures the quality and consistency of Wi-Fi signal coverage across an organization's wireless infrastructure. It provides insight into how well clients can connect to access points with sufficient signal strength and quality.
According to theJuniper Mist AI Operations and Analytics Guide, the Coverage SLE is defined as:
"The percentage of client connections that meet the minimum signal strength threshold required for satisfactory performance. Sub-threshold values represent areas where coverage is inadequate or inconsistent." In the exhibit, the SLE visualization shows79% successful coverageand21% unsuccessful coverage, meaning that21% of connection attempts or client areas did not meet the desired signal strength threshold. These failures may be caused by factors such as:
* Insufficient AP density or placement.
* RF interference from neighboring devices.
* Physical obstructions impacting signal propagation.
Thus, theunsuccessful coverage percentage is 21%, indicating potential areas where additional APs or configuration optimization may be needed to improve user experience.
References:- Juniper Mist Wireless Assurance and SLE Documentation- Juniper Mist AI Operations and Troubleshooting Guide- Juniper Mist Cloud Analytics and Coverage Metrics Overview


NEW QUESTION # 43
What should be specified in the session policy settings?

  • A. The duration for session timeout and inactivity timeout.
  • B. The types of special characters allowed in the password.
  • C. The implementation of two-factor authentication (2FA).
  • D. The minimum number of characters required for the password.

Answer: A

Explanation:
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


NEW QUESTION # 44
When a Juniper Mist managed switch is powered on, which event must be completed prior to the Zero-Touch Provisioning (ZTP) process moving forward?

  • A. All user accounts must be configured on the switch.
  • B. NETCONF must be configured on the switch.
  • C. The switch's clock must be synchronized with an NTP server.
  • D. A DHCP lease must be obtained by the switch.

Answer: D

Explanation:
A DHCP lease must be obtained by the switchbefore the ZTP process proceeds. Juniper documentation clarifies: "Ensure that a DHCP server is reachable. In addition to providing an IP address to the switch, your DHCP server must provide the following information: a default gateway, an NTP server, and a DNS server address..." The initial event in the ZTP workflow is the switch receiving a valid IP address via DHCP. Only after obtaining an address can the switch connect to the Mist cloud and proceed with zero-touch provisioning.
Other requirements, such as user account, NETCONF, or NTP sync, occur later or are handled automatically via cloud policy after onboarding.
Reference:Juniper Mist Wired Assurance Configuration Guide , Cloud-Ready EX and QFX Switches with Mist Manual , Ports to enable on your firewall - Mist.


NEW QUESTION # 45
Which protocol is used by Mist to monitor non-Juniper switches?

  • A. SMTP
  • B. LLDP
  • C. IPsec
  • D. SNMP

Answer: D

Explanation:
The Simple Network Management Protocol (SNMP) is used by Mist to monitor non-Juniper switches. SNMP is a widely adopted protocol for network management, enabling the collection and organization of information about managed devices on IP networks.


NEW QUESTION # 46
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?

  • A. organization
  • B. clients
  • C. site
  • D. WLAN

Answer: C

Explanation:
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.


NEW QUESTION # 47
Which Mist supported API is considered data-driven?

  • A. RESTful
  • B. WebSocket
  • C. Webhook
  • D. gRPC

Answer: A


NEW QUESTION # 48
Which two statements about webhooks and APIs are correct? (Choose two.)

  • A. 100% of all Juniper Mist objects are configurable using webhooks.
  • B. Webhooks are a push from Juniper Mist, and APIs are a pull by the client.
  • C. There is an hourly limit to the number of API calls that an organization can have.
  • D. There is an hourly limit to the number of webhooks that an organization can have.

Answer: B,C

Explanation:
In theJuniper Mist Cloud architecture, bothwebhooksandAPIsare key interfaces for automation, integration, and data exchange with third-party systems. While they both facilitate communication between Mist and external applications, they operate inopposite directionsand serve distinct purposes.
According to theJuniper Mist API and Webhook Developer Guide:
* Webhooksarepush-based notificationsinitiated by the Juniper Mist Cloud. When specific events occur (such as device disconnection, client onboarding, or alert generation), Mist sends structured JSON payloads to a preconfigured external URL endpoint.
* APIs(Application Programming Interfaces) arepull-based querieswhere an external client polls the Mist Cloud to retrieve or update data (e.g., inventory, configuration, or metrics).
Additionally, the Mist Cloud enforcesrate limitson API calls to ensure platform stability and fair usage:
"API rate limits are applied on a per-organization basis to prevent excessive polling and to maintain consistent performance." In contrast, webhooks do not have a strict hourly quota because they are event-triggered rather than continuous requests.
Therefore:
* Ais correct - Webhooks push, APIs pull.
* Bis correct - There is an hourly API rate limit per organization.
OptionsCandDare incorrect because webhooks are event-based (not rate-limited hourly) and do not configure Mist objects directly-they only send notifications.
References:- Juniper Mist API and Webhook Developer Documentation- Juniper Mist Cloud Automation and Integration Guide- Juniper Mist Platform Architecture Overview


NEW QUESTION # 49
Which three components are used to deploy location-based services? (Choose three.)

  • A. BLE tags
  • B. SFP
  • C. location engine
  • D. compact flash
  • E. location sensors

Answer: A,C,E

Explanation:
To deploy location-based services in Mist, the following components are used:
Location Sensors: These devices capture the location data from BLE tags and other devices.
BLE Tags: These are small devices that emit Bluetooth signals to be picked up by location sensors.
Location Engine: This software processes the data from the sensors and tags to determine precise locations and provide analytics.


NEW QUESTION # 50
A Mist administrator may link their Mist login to which type of social account login?

  • A. Facebook
  • B. TikTok
  • C. LinkedIn
  • D. Google

Answer: D

Explanation:
Google Account Integration: Mist administrators can link their Mist login to a Google account. This facilitates easier access and management of Mist services using a single sign-on (SSO) mechanism provided by Google.
Benefits of SSO: Using Google SSO simplifies user management, reduces password fatigue, and enhances security through Google's robust authentication mechanisms.


NEW QUESTION # 51
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?

  • A. Disable the Critical Switch Port Down alarm on the Alerts Configuration page.
  • B. Enable the Critical Switch Port Up alarm on the Alerts Configuration page.
  • C. Navigate to the switch in the Mist UI and modify the Port Configuration to enable the Up/Down Port Alerts setting for the interface.
  • D. Navigate to the switch in the Mist UI and modify the Port Profile configuration to enable Persistent (Sticky) MAC Learning for the Port Profile.

Answer: C

Explanation:
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.


NEW QUESTION # 52
Which statement is correct about the Super User account role?

  • A. The Super User role is restricted to the specific sites that are defined when creating the user account.
  • B. You must use the Super User role to add administrators to an organization.
  • C. The Super User role has limited read/write capabilities.
  • D. You must use the Super User role to claim an organization's new AP.

Answer: B

Explanation:
In theJuniper Mist Cloud platform, user roles define the scope of permissions that determine what administrative functions an individual can perform within an organization. TheSuper Userrole represents the highest level of administrative authoritywithin a Juniper Mist organization and carries full control over both organization-wide and site-specific configurations.
According to theJuniper Mist Cloud Administration and User Management documentation, the Super User role is described as:
"The Super User role provides full read and write access across the entire organization. Only Super Users can manage organization-level settings, add or remove other administrators, and assign privileges to users." This means that only a Super User canadd new administrators, managesubscription entitlements, configure organization-level policies, and performfull lifecycle device management. Unlike site administrators, Super Users are not restricted to specific locations-they have unrestricted visibility and control across all sites within the organization.
Therefore, the correct answer isD, since the Super User role is explicitly required toadd administratorsto an organization and perform top-level management operations.
References:- Juniper Mist Cloud Administration and User Management Guide- Juniper Mist Organization and Role-Based Access Control Documentation- Juniper Mist Cloud Fundamentals and User Roles Study Guide


NEW QUESTION # 53
The Mist Site Insights Dashboard helps network administrators in which two ways? (Choose two.)

  • A. It identifies when a monitored component of the network has crossed a defined threshold.
  • B. It identifies issues affecting an end user's network experience displayed as a percentage of success.
  • C. It displays when a bad event has been logged.
  • D. It displays information about the current WLANs.

Answer: A,B


NEW QUESTION # 54
You want to determine where you have coverage issues in your network using Marvis Actions.
Which Marvis Action category should you use in this situation?

  • A. AP
  • B. Application
  • C. Connectivity
  • D. Clients

Answer: A


NEW QUESTION # 55
In the Mist UI, which part of the system platform provides information about missing VLANs?

  • A. Service-Level Exceptions
  • B. Switch Insights
  • C. Marvis Actions
  • D. Events

Answer: C

Explanation:
System Platform Components in Mist UI:
Different components provide various insights and information about the network.
Component Descriptions:
Switch Insights: Provides detailed information about switch performance and status. Events: Logs and displays events occurring in the network but does not specifically highlight missing VLANs.
Marvis Actions: AI-driven insights and recommendations that include identifying and suggesting actions for missing VLANs.
Service-Level Exceptions (SLEs): Monitor and report on performance metrics, not specifically focused on VLAN issues.


NEW QUESTION # 56
Which two statements correctly describe the encryption of traffic using Mist? (Choose two.)

  • A. By default, the communication between a Wi-Fi client and an AP is encrypted.
  • B. By default, the communication between an AP and a RADIUS server is not encrypted.
  • C. By default, the communication between an AP and a RADIUS server is encrypted.
  • D. By default, the communication between a Wi-Fi client and an AP is not encrypted.

Answer: A,B

Explanation:
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.


NEW QUESTION # 57
What are two ways that Juniper Mist Wireless Assurance enhances troubleshooting capabilities? (Choose two.)

  • A. by alerting administrators of subscription options through e-mail
  • B. by monitoring congestion uplink as a percentage of gateway bandwidth
  • C. by using Predictive Analytics and Correlation Engine (PACE)
  • D. by employing dynamic packet capture

Answer: C,D

Explanation:
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


NEW QUESTION # 58
Which SLE reports RF interference?

  • A. Roaming
  • B. Coverage
  • C. AP Health
  • D. Capacity

Answer: D

Explanation:
Use the Wireless Capacity SLE to track user experiences with RF channel capacity (bandwidth) on your wireless network.


NEW QUESTION # 59
What are two components of WiFi Management and Assurance? (Choose two.)

  • A. Radio Resource Management
  • B. Dynamic Packet Capture
  • C. Marvis Actions
  • D. wayfinding

Answer: A,B

Explanation:
Dynamic Packet Capture and Radio Resource Management (RRM) are two key components of WiFi Management and Assurance in Juniper Mist. According to official documentation: "Dynamic packet capture allows capturing wireless packets between clients and an access point to diagnose root-cause wireless issues.
For example, when a major issue is detected, such as an authorization failure, packet captures facilitate quick troubleshooting and root-cause analysis." RRM, driven by Mist's AI, proactively analyzes network conditions and client experiences to automatically adjust channel and power settings for optimal performance: "AI- driven RRM uses data science and cumulative SLE performance to learn and optimize radio settings, helping RF planning to continue to improve and adapt in the changing environments..." Marvis Actions is an AI-powered troubleshooting feature, but it is a separate component enabled by the Marvis subscription, not by base WiFi Management and Assurance. Wayfinding is part of the vBLE Engagement or location services.
Reference:Juniper Mist Wi-Fi Assurance | UK&I , Mist Management Guide , Platform Wi-Fi Assurance - NetworkScreen.com


NEW QUESTION # 60
......


Juniper JN0-253 Exam Syllabus Topics:

TopicDetails
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 Cloud Operations: This domain covers three API types (RESTful, WebSocket, Webhook) for programmatic integration, plus support resources including ticketing systems and documentation.
Topic 3
  • Location-based Services: This domain presents virtual Bluetooth Low Energy capabilities for asset tracking, visibility, and location-aware experiences that extend networking into physical space management.
Topic 4
  • 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 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.
Topic 6
  • Juniper Mist Monitoring and Analytics: This domain focuses on monitoring tools including service-level expectations, packet captures, AI-driven insights, automated alerts, and audit logs for comprehensive network visibility.

 

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