[Feb 23, 2026] Free JNCIA-MistAI JN0-253 Exam Question [Q10-Q33]

[Feb 23, 2026] Free JNCIA-MistAI JN0-253 Exam Question

JN0-253 dumps & JNCIA-MistAI sure practice dumps

NEW QUESTION # 10
You are troubleshooting a wireless authentication problem.
Which two Mist features would help you in this scenario? (Choose two.)

• A. client events
• B. audit logs
• C. access point events
• D. packet capture

Answer: A,D

Explanation:
Packet Capture: This feature allows for detailed inspection of traffic at the packet level. Capturing packets can help identify issues with authentication protocols, such as misconfigured settings or failures in the authentication exchange process.
Client Events: Monitoring client events provides insights into the client's authentication attempts, including successes and failures. This data helps in pinpointing where in the process the failure occurs, whether at the client, access point, or authentication server.

NEW QUESTION # 11
By default, how long does an Installer role have access to a site for initial configuration before expiration?

• A. unlimited
• B. 48 hours
• C. 7 days
• D. 24 hours

Answer: C

NEW QUESTION # 12
Which two statements about webhooks and APIs are correct? (Choose two.)

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

Answer: C,D

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 # 13
Which statement about microservices is correct?

• A. Microservices are designed to be independent to ensure that if one process fails, the remaining processes will continue to operate.
• B. Microservices communicate with each other using Network Configuration Protocol (NETCONF).
• C. Microservices must share a common database to ensure data integrity.
• D. Microservices are developed as a complete application set, and updates require the modification of the entire application.

Answer: A

Explanation:
TheJuniper Mist Cloudarchitecture is built on amicroservices-based design, which enhances reliability, scalability, and operational efficiency. Each microservice performs a specific function-such as authentication, telemetry ingestion, analytics, or AI inference-independently of other components.
According to theJuniper Mist Cloud Architecture and Operations Guide:
"Mist Cloud leverages a microservices architecture where each service operates independently. This design ensures that a failure in one service does not impact the functionality or availability of others." This modular approach provides several key advantages:
* Fault isolation:One component can fail or restart without affecting the rest of the system.
* Independent scaling:Services can scale dynamically based on demand.
* Continuous updates:New features and patches can be deployed without downtime.
Options B, C, and D are incorrect because Mist microservices do not rely onNETCONFfor internal communication, arenot monolithic, and donot share a single common database-each maintains its own data model as required.
Therefore, the correct answer isA. Microservices are designed to be independent to ensure that if one process fails, the remaining processes will continue to operate.
References:- Juniper Mist Cloud Architecture and Operations Guide- Juniper Mist AI Platform and Microservices Overview- Juniper Mist Cloud Fundamentals Study Guide

NEW QUESTION # 14
Which statement correctly describes Juniper Mist organization IDs?

• A. They are created manually.
• B. They are in CSV format.
• C. They can be edited.
• D. They are read-only.

Answer: D

Explanation:
In theJuniper Mist Cloud platform, each organization is automatically assigned a uniqueOrganization ID upon creation. This ID serves as apermanent, system-generated identifierused for API authentication, integration, and cross-service communication.
According to theJuniper Mist Cloud Administration and API Integration Guide:
"Organization IDs are automatically generated by the Mist Cloud at the time of organization creation and are read-only system values that cannot be edited or modified by administrators." This ensures that every organization is uniquely identifiable across Mist's distributed cloud infrastructure. The Organization ID remains consistent even if the organization name or configuration changes.
Therefore, the correct answer isD. They are read-only.
References:- Juniper Mist Cloud Administration and API Integration Guide- Juniper Mist Organization and Account Management Documentation- Juniper Mist Cloud Fundamentals Study Guide

NEW QUESTION # 15
What are two ways that Juniper Mist Access Assurance enforces network access control? (Choose two.)

• A. It groups users into network segments.
• B. It monitors network traffic.
• C. It assigns specific roles to users.
• D. It creates a VPN using an IPsec tunnel.

Answer: A,C

Explanation:
Juniper MistAccess Assuranceis a cloud-based network access control service that provides secure wired and wireless access through identity- and policy-based mechanisms. According to the official Juniper Mist AI documentation, Access Assurance usesuser and device identityto determine network access privileges dynamically.
The service enforces access policies primarily in two ways:
* Assigning Specific Roles to Users:Access Assurance dynamically assigns roles to users and devices after successful authentication. These roles are used to apply specific network policies and permissions, defining what level of access or network resources a user or device is allowed. Roles can be leveraged in wireless SSID configurations or switch access policies to ensure consistent enforcement across the infrastructure.
* Grouping Users into Network Segments:Access Assurance also allows grouping of users and devices intonetwork segmentsusing VLANs or Group-Based Policy (GBP) technology. This segmentation isolates users or devices into logical groups, ensuring security and optimized traffic handling. Policies are then applied to these groups to control communication between segments, thereby maintaining a zero-trust framework.
Options A and B are incorrect because Access Assurance does not establish VPN tunnels or passively monitor traffic as its primary method of access control. It relies instead onidentity-based role assignment and segmentationto enforce network security.
References:- Juniper Mist Access Assurance Data Sheet- Juniper Mist Access Assurance Getting Started Guide- Juniper Mist AI Cloud Documentation

NEW QUESTION # 16
In the context of Juniper Mist, which two statements describe a bad user minute? (Choose two.)

• A. A metric that tracks how many minutes a user is connected to a network.
• B. The number of affected users multiplied by the number of minutes they are affected.
• C. A way to normalize a user's negative network experience.
• D. The number of minutes a device is down multiplied by the number of users affected.

Answer: B,C

Explanation:
InJuniper Mist AI, the concept of aBad User Minute (BUM)is a core metric used withinService Level Expectations (SLEs)and theAI-driven analytics engineto quantify negative user experience.
According to theJuniper Mist AI Operations and SLE Analytics Guide, a "bad user minute" is defined as:
"A normalized measure that represents one minute of degraded user experience for one user." Mist AI calculates this by multiplying the number of affected users by the number of minutes they experience poor performance. This allows administrators to understand the impact of network issues not just in duration, but in terms of total user experience degradation.
For example, if ten users experience poor connectivity for one minute, the system records10 bad user minutes
. This normalization helps Juniper Mistprioritize incidents based on impact, rather than duration alone, allowing administrators to focus on issues that affect the greatest number of users.
Therefore:
* Bis correct - it's a way to normalize a user's negative experience.
* Dis correct - it's calculated asnumber of affected users × number of minutes affected.
References:- Juniper Mist AI Operations and Analytics Guide- Juniper Mist Wireless Assurance and SLE Overview- Juniper Mist AI Insight Metrics and KPI Definitions

NEW QUESTION # 17
Which operation does an HTTP POST perform?

• A. read
• B. write
• C. delete
• D. create

Answer: D

Explanation:
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.

NEW QUESTION # 18
Which statement is correct about the SLE dashboard?

• A. Both SLEs and classifiers are displayed as a percentage of failure.
• B. SLEs are displayed as a percentage of failure and classifiers are displayed as a percentage of success.
• C. Both SLEs and classifiers are displayed as a percentage of success.
• D. SLEs are displayed as a percentage of success and classifiers are displayed as a percentage of failure.

Answer: D

Explanation:
In the SLE dashboard, Service Level Expectations (SLEs) are shown as a percentage of success to highlight how well the network is performing. On the other hand, classifiers are displayed as a percentage of failure to indicate areas where issues are occurring and need attention. This approach helps provide a clear understanding of both overall performance and problem areas.

NEW QUESTION # 19
When browsing the Marvis Actions page, you notice that something has triggered the "AP Offline" Marvis Action. You click on that action.
What information will you see displayed? (Choose two.)

• A. resolved action
• B. Marvis Action status
• C. recommended action
• D. Mist support ticket status

Answer: B,C

Explanation:
When browsing the Marvis Actions page and you click on the "AP Online" Marvis Action, you will see:
Marvis Action Status: This indicates the current state of the action, whether it is in progress, resolved, or another status.
Recommended Action: Marvis will provide a suggested course of action to resolve the issue. This could include steps like configuration changes or other remedial actions.

NEW QUESTION # 20
Which two features does a Marvis VNA subscription add to the support ticket creation experience? (Choose two.)

• A. escalation
• B. in-context AI-assisted troubleshooting
• C. configuration assistance
• D. AI-generated response

Answer: B,D

Explanation:
With a Marvis VNA subscription, support ticket creation in Juniper Mist is enhanced by in-context AI- assisted troubleshooting and AI-generated responses. According to official Mist documentation, "Marvis subscribers will see AI-generated responses that summarize information from Juniper Mist documentation as they start entering their support query-often surfacing relevant answers right within the support workflow.
For many issues, AI-assisted troubleshooting buttons appear on the support form itself, launching guided, context-aware diagnostic flows with Marvis to resolve problems before a ticket is formally created." These features use natural language processing and contextual data to provide intuitive, AI-driven self-help and troubleshooting, improving the support workflow and often eliminating the need to escalate to human agents or require configuration assistance. Escalation is handled by support, not Marvis VNA; and configuration assistance is a general feature, not specifically added by the Marvis VNA subscription.
Reference:Juniper Mist Create a Support Ticket Guide, Marvis VNA Overview

NEW QUESTION # 21
Which Juniper Mist feature provides visibility into BGP operations for MX Series routers?

• A. WAN Assurance
• B. Access Assurance
• C. Routing Assurance
• D. Wired Assurance

Answer: C

Explanation:
The feature that provides deep visibility into BGP operations for MX Series routers is Routing Assurance.
According to official Juniper documentation: "Juniper Mist Routing Assurance provides insights about...
routing, including routing events, routing protocol states, peer status analysis, routes, and more" for supported routers such as Juniper MX and ACX series. Routing Assurance extends Mist AI observability and analytics into the routing fabric, offering real-time visibility and telemetry for BGP peering session health, routing tables, events, path changes, and other core routing metrics. This empowers network operators with actionable insights and root cause analysis capabilities to maintain optimal WAN and core routing performance from the Mist cloud. Wired Assurance focuses on switch and port health and is not designed for routing protocol visibility.
Reference:
Juniper Mist Routing Assurance Datasheet; Product Description

NEW QUESTION # 22
How does Marvis detect a bad cable problem?

• A. Marvis randomly performs cable tests on every cable in your network.
• B. Marvis randomly performs packet captures on various APs to find bad cables in your network.
• C. Marvis analyzes metrics, such as interface errors, that match a bad cable pattern.
• D. Marvis constantly sends ping packets to remote end hosts to determine whether there is a failure in the path.

Answer: C

Explanation:
Marvis, the AI-driven Virtual Network Assistant inJuniper Mist, uses continuous telemetry analysis and AI correlation to identifybad cable conditions. It does this by examining interface-level statistics gathered from switches and access points throughWired Assurance.
According to theJuniper Mist Marvis Operations and Troubleshooting Guide:
"Marvis detects bad cable issues by analyzing telemetry patterns such as CRC errors, FCS errors, packet drops, and link flaps that collectively match a known cable fault signature." When such patterns are detected, Marvis automatically generates anAI Actionindicating aBad Cableissue and identifies whether the problem is with theportor thecable. This proactive detection allows administrators to replace faulty hardware before it impacts network users.
Options A, B, and C are incorrect because Marvis does not perform active pinging, random packet captures, or random cable testing. Its detection is entirelyAI and telemetry-based.
Therefore, the correct answer isD. Marvis analyzes metrics, such as interface errors, that match a bad cable pattern.
References:- Juniper Mist Marvis AI Operations Guide- Juniper Mist Wired Assurance and Telemetry Analytics Documentation- Juniper Mist AI Troubleshooting and Automation Overview

NEW QUESTION # 23
Which two statements are correct about the Juniper Mist vBLE Asset Visibility mode? (Choose two.)

• A. The vBLE antenna tracks chirps from BLE tags.
• B. The vBLE antenna communicates with mobile devices running the Juniper Mist location SDK.
• C. The vBLE antenna is in the transmit mode.
• D. The vBLE antenna is in the receive mode.

Answer: A,D

Explanation:
Juniper Mist'svirtual Bluetooth Low Energy (vBLE)technology is designed to deliverprecise indoor location servicesusing cloud-managed access points equipped with integrated BLE antenna arrays. The system supports multiple operational modes, includingEngagement Mode(for mobile app interactions) and Asset Visibility Mode(for BLE tag tracking).
According to theJuniper Mist Location Services Documentation, inAsset Visibility Mode, the vBLE antenna functions primarily inreceive modeto detect and process signals emitted fromBLE asset tags. These tags periodically transmit Bluetooth "chirps" that are received by multiple APs. Mist Cloud then usesangle-of- arrival (AoA)andRSSI triangulation algorithmsto determine the exact location of the asset within the facility.
The documentation specifies:
"In Asset Visibility Mode, the vBLE antenna operates in receive mode and listens for BLE tag beacons (chirps). The system triangulates these signals to calculate the real-time location of tracked assets." Conversely,Engagement Modeis the configuration in which vBLE operates intransmit modeto interact with mobile devices running the Mist SDK - which corresponds to location-based engagement or proximity notifications.
Thus, the correct answers are:
* A. The vBLE antenna is in the receive mode
* B. The vBLE antenna tracks chirps from BLE tags
References:- Juniper Mist Location-Based Services Configuration Guide- Juniper Mist vBLE Architecture and Operation Modes Documentation- Juniper Mist Cloud Location Services Technical Overview

NEW QUESTION # 24
Which two statements correctly describe Mist claim codes and activation codes? (Choose two.)

• A. An activation code is printed on a sticker on the AP.
• B. Claim codes may be used to claim only one AP.
• C. Claim codes may be used to claim multiple APs at once.
• D. Activation codes may be used to claim multiple APs at once.

Answer: B,D

Explanation:
Claim Codes: Claim codes are unique to each AP and can be used to claim only one AP at a time. This ensures each device is correctly registered and managed individually within the Mist system.
Activation Codes: Activation codes can be used to claim multiple APs at once, facilitating bulk onboarding and simplifying the setup process for large deployments.

NEW QUESTION # 25
As an organization administrator, what are two ways to configure additional layers of security for administrator logins? (Choose two.)

• A. Enable a password policy.
• B. Enable two-factor authentication.
• C. Disable a password policy.
• D. Increase session timeouts.

Answer: A,B

Explanation:
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.

NEW QUESTION # 26
Which two statements correctly describe the provisioning of greenfield and brownfield switches using the Mist UI? (Choose two.)

• A. Greenfield switches are provisioned using the Adopt Switches button.
• B. Greenfield switches are provisioned using the Claim Switches button.
• C. Brownfield switches are provisioned using the Adopt Switches button.
• D. Brownfield switches are provisioned using the Claim Switches button.

Answer: B,C

Explanation:
Greenfield switches: These are new switches that have not been previously configured or managed. They are typically provisioned using the "Claim Switches" button, as they need to be initially claimed and added to the Mist environment.
Brownfield switches: These are existing switches that have been configured and managed using a different system. They are typically provisioned using the "Adopt Switches" button, as they need to be adopted into the Mist environment while preserving their existing configuration.

NEW QUESTION # 27
In the Juniper Mist UI, which two administrative roles are required to view an organization's Audit Logs?
(Choose two.)

• A. Helpdesk
• B. Super User
• C. Network Admin
• D. Installer

Answer: B,C

Explanation:
To view an organization's Audit Logs in the Juniper Mist UI, the required roles are Network Admin and Super User. According to Juniper Mist documentation: "Network Admin (with All Sites access) and Super User roles grant permission to view and interact with organization-level features, including Audit Logs and Inventory." The Audit Logs page provides a chronological record of user logins and configuration changes, and access is restricted to authorized users for security and compliance reasons. The "Super User" role has full read/write access for the entire organization-no restrictions-allowing these users to view Audit Logs without limitation. The "Network Admin" role, when granted access to All Sites (not just specific sites), can also view Audit Logs as part of their permitted organization-level operations. Other roles, such as Helpdesk and Installer, have limited or specific access and cannot access Audit Logs. These permissions ensure that only trusted network administrators and super users have the necessary authority for sensitive audit and compliance functions.
Reference:Juniper Mist Portal User Roles Document; Audit Logs Overview; Administrator Roles for Switches

NEW QUESTION # 28
Which two statements are true about switch configurations at the site level? (Choose two.)

• A. Site-level switch configurations override org-level templates.
• B. Switch configurations at the site level are an additional way to apply a switch template to a specific site.
• C. Switch configurations at the site level are required to manually configure individual switches.
• D. Organizational-level templates override site-level switch configurations.

Answer: A,B

Explanation:
In theJuniper Mist Cloud architecture, configuration hierarchy and inheritance are key design principles for managingEX SeriesandQFX Seriesswitches underWired Assurance. Configuration settings can be applied at both theorganization leveland thesite level, with clearly defined precedence rules.
According to theJuniper Mist Wired Assurance Configuration Guide, theorganization leveldefines global configuration templates that apply across multiple sites, while thesite levelprovides customization options specific to a particular location or environment.
The documentation states:
"Site-level configuration overrides any global or organizational template configurations for switches within that site." and further clarifies:
"Administrators can create or modify switch templates at the site level to apply custom settings to specific deployments without affecting other sites under the same organization." Thus:
* Statement Cis correct - site-level configurations are an additional method to apply templates for a specific site.
* Statement Dis correct - site-level configurationstake precedenceover org-level templates.
Statement Ais incorrect because org-level templates donotoverride site-level configurations; the reverse is true.
Statement Bis incorrect because site-level configuration isnot requiredfor manual switch setup-it is an optional, more efficient method of template application.
References:- Juniper Mist Wired Assurance Configuration and Template Management Guide- Juniper Mist Cloud Administration Guide- Juniper Mist Site and Organization Configuration Hierarchy Documentation

NEW QUESTION # 29
Which two statements correctly describe Mist organizations and sites? (Choose two.)

• A. An organization is contained within a site.
• B. A site is contained within an organization.
• C. Multiple sites may be contained within a single organization.
• D. Multiple organizations may be contained within a single site.

Answer: B,C

Explanation:
In the Mist architecture, an organization is a higher-level entity that can contain multiple sites.
A site is contained within an organization: Each site operates under the umbrella of an organization, allowing centralized management and policy enforcement.
Multiple sites may be contained within a single organization: This structure enables organizations to manage and monitor different geographical locations or different business units within a single centralized framework.
This hierarchical structure facilitates scalable and organized network management.

NEW QUESTION # 30
At which two configuration levels are WLAN objects created? (Choose two.)

• A. site level
• B. device level
• C. org level
• D. user level

Answer: A,C

Explanation:
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.

NEW QUESTION # 31
What is the maximum number of Mist Edge devices supported for high availability?

• A. A maximum of 16 Mist Edge devices are supported.
• B. A maximum of two Mist Edge devices are supported.
• C. An unlimited number of Mist Edge devices are supported.
• D. A maximum of three Mist Edge devices are supported.

Answer: B

Explanation:
The maximum number of Mist Edge devices supported for high availability is two. This ensures that there is a backup device in place to take over in case the primary device fails, providing redundancy and maintaining network stability.

NEW QUESTION # 32
Which protocol does Mist cloud use to send and receive data to connected access points?

• A. HTTPS
• B. PPTP
• C. SSH
• D. MQTT

Answer: A

Explanation:
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.

NEW QUESTION # 33
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