JN0-253 Exam Dumps - Juniper JNCIA-MistAI Questions and Answers

Among Juniper Mist’sLocation-Based Services,Asset Visibilityprovides the most accurate location tracking capabilities. This is achieved through the use ofvBLE (virtual Bluetooth Low Energy)technology, which leverages a patented16-element BLE antenna arrayintegrated into Mist Access Points forAngle of Arrival (AoA)calculations.

According to theJuniper Mist Location-Based Services Technical Overview:

“Asset Visibility delivers sub-meter location accuracy by using BLE-based triangulation combined with Mist AI’s machine learning algorithms for continuous calibration.”

WhileWi-Fi locationoffers approximate device tracking based on signal strength and triangulation, andProximity Detectionidentifies nearby devices,Asset Visibilityprovides precise real-time tracking of BLE-tagged objects and devices.

User Engagement, on the other hand, focuses on customer-facing mobile interactions, not accuracy optimization.

Therefore, the correct answer isC. Asset Visibility.

When a customer requests asubscription renewalfor Juniper Mist services via e-mail, the process is handled through a coordinated workflow between theJuniper Mist Cloud licensing systemandJuniper Support. The renewal request ensures that existing service entitlements—such asWireless Assurance,Wired Assurance,WAN Assurance,Marvis AI, orPremium Analytics—continue without interruption.

According to theJuniper Mist Cloud Licensing and Subscription Management Guide, the renewal workflow is described as follows:

“When a renewal request is submitted via e-mail, Juniper Mist support receives and validates the request, initiates processing for the selected subscriptions, and issues a new activation code once the renewal is completed.”

Here’s what happens after the renewal request:

B.The Juniper Mist systemsends a confirmation e-mailacknowledging the renewal request and routes it tosupport for processing.

C.Once processed,Juniper Mist generates and delivers an activation codevia e-mail that must be entered into the Mist portal to activate the renewed subscription(s).

Incorrect options:

A:No promotional materials or physical packages are sent.

D:A cancellation notice is not sent for renewal requests; it applies only to expired or terminated subscriptions.

Therefore, the correct answers areB. Juniper Mist e-mails the support request for the selected subscriptionsandC. Juniper Mist processes the order and sends an activation code.

In theJuniper Mist Cloud platform, each organization is automatically assigned a uniqueOrganization IDupon 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.

InJuniper Mist Cloud, guest access is managed through theGuest Portalfeature, which allows administrators to configure secure and flexible authentication methods for temporary or visitor access. These options are designed to provide a balance between user convenience and network security.

According to theJuniper Mist Guest Access and Captive Portal Configuration Guide, the supported authentication options include:

“Authentication Code (Self-registration) and Sponsored Guest workflows, among others, which provide different levels of administrative control and ease of use.”

Authentication Code (A):Visitors receive a temporary authentication code (PIN) via email or SMS that they use to log in. This method is ideal for self-service access while maintaining accountability.

Sponsored Guest (C):In this mode, guests must be approved by a designated employee or sponsor before gaining access. This adds an extra layer of security by involving internal personnel validation.

MAC Authentication (B)andSAML (D)are not used for guest portals; they are designed for device-based authentication and enterprise-level identity federation, respectively.

In theJuniper Mist Cloud architecture, aWLAN templateis used to define wireless network parameters, including SSIDs, authentication methods, and access control settings. These templates allow administrators to apply consistent Wi-Fi configurations across multiple access points and sites.

According to theJuniper Mist Wireless Assurance Configuration Guide, the WLAN template:

“Defines the configuration for SSIDs, including security mode (WPA2, WPA3, 802.1X), authentication servers, VLAN assignment, and user access policies.”

To configureWPA3/Enterprise (802.1X)security for employee SSIDs, administrators must create or edit a WLAN template and selectWPA3-Enterpriseas the security type. The template can then be associated with all sites in the organization, ensuring uniform deployment.

Other template types serve different purposes:

Switch template:Used for wired configuration and port profiles.

WAN Edge template:Used for SD-WAN and WAN Assurance configurations.

RF template:Used to manage radio parameters such as channel, power, and band.

Therefore, the correct answer isC. WLAN template.

InJuniper Mist AI,Service Level Expectations (SLEs)form the foundation ofWireless AssuranceandWired Assurance. They provide adata-driven, proactive methodto measure and maintain the quality of user experience, going beyond traditional device-centric monitoring.

According to theJuniper Mist AI Operations GuideandWireless Assurance Documentation, SLEs:

“Leverage machine learning and data science to deliver a proactive understanding of end-user experience and identify root causes of performance issues.”

Each SLE (such asTime to Connect,Roaming,Throughput,Coverage, andCapacity) is composed ofclassifiers, which break down performance metrics into measurable, root-cause categories. Examples includeDHCP,DNS,Authentication, andSignal Qualityclassifiers.

This classifier-based structure enables Mist AI to automatically correlate problems and highlight the most probable cause of degradation—eliminating the need for manual troubleshooting or reactive analysis.

OptionsBandDare incorrect because SLEs arenot ad hoc toolsfor manual troubleshooting and donot simply list connected clients. Instead, they provide intelligent, AI-driven insights into user experience across the network.

Therefore, the correct statements are:

A. SLEs use machine learning to provide a proactive approach to understanding the end-user experience.

C. The metrics analyzed to meet specific SLE goals are categorized into classifiers.

Juniper Mist Wired Assurance delivers robust automation for campus and remote switches by supporting both template-based configuration for switches and port profiles as core features. According to the official Juniper Mist documentation, "Wired Assurance provides cloud-managed switch configuration through scalable templates. These templates are set at the organization or site level, standardizing VLANs, port settings, security options, and other operational parameters for all managed EX and QFX series switches." Furthermore, port profiles allow administrators to automate port assignment and behavior based on dynamic criteria such as LLDP information or MAC addresses: "Dynamic port profiles are applied automatically when specific criteria are detected, simplifying operational workflows and reducing manual errors."

Features like "template-based configuration for routers" and "WxLAN policies" are not part of Mist Wired Assurance. Router configuration is enabled in Routing Assurance, and WxLAN is a Juniper-specific campus automation solution, not directly related to switch management.

Verification:

This aligns with the selections marked in your image ("template-based configuration for switches" and "port profiles"). It is fully verified by Juniper's official guides for Mist Wired Assurance.

To use Marvis Minis, both theWiFi Management and AssuranceandMarvis for Wirelesssubscriptions are required. According to the official Juniper documentation, Marvis Minis "does not require a separate subscription. Any organization with an active Marvis for Wireless subscription is automatically entitled for Marvis Minis support." However, the Marvis for Wireless subscription operates on top of the foundational WiFi Management and Assurance subscription, which is necessary to operate APs and the wireless network within the Mist Cloud. As stated: "In addition to your base Assurance subscriptions (Wireless Assurance, WAN Assurance, or Wired Assurance), you also need Marvis subscriptions for each device..." Therefore, both are prerequisites for using Marvis Minis, ensuring full wireless management with AI-powered digital twin validation.

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.

InJuniper Mist Wireless Assurance, radio frequency (RF) configurations such as transmit power, channel width, and band selection are typically managed throughRF Templatesat the site or organization level. However, administrators canoverride RF Template settingsfor specific devices or groups of devices when custom configurations are required.

According to theJuniper Mist Wireless Assurance Configuration Guide, RF template overrides can be accomplished using two UI configuration options:

“Administrators can apply overrides to RF settings either per access point using AP-specific settings or across a defined group of APs using labels.”

AP-specific settings (A):Allow administrators to manually modify the radio parameters of a single access point, overriding site-level template values.

Labels (C):Used to group access points logically (e.g., by floor or building) and apply customized configurations or overrides to those APs collectively.

Device Profiles (B)are used for wired switch configurations, andWLAN Templates (D)control SSID-related configurations—not RF parameters.

Therefore, the correct answers areA. AP-specific settingsandC. Labels.