JN0-253 Exam Dumps - Mist AI - Associate (JNCIA-MistAI)

TheJuniper Mist Cloud portalprovides a user-friendly interface that supports multiple languages to enhance accessibility for global users. The language preference determines the display language for menus, dashboards, and configuration pages across the Mist UI.

According to theJuniper Mist Cloud Administration Guide, the portal’s language can be modified as follows:

“Users can change the display language of the Mist portal using the Change Language drop-down list located in the upper-right corner of the interface.”

This option allows users to immediately switch the UI language without affecting other users in the organization or requiring administrative permissions. The change is applied per user profile and is stored for future sessions.

Other listed options are invalid:

A:The Alerts page does not include language settings.

B:The My Account page shows personal info but not display language options.

C:Organization templates are unrelated to UI preferences.

Therefore, the correct answer isD. Use the Change Language drop-down list of the Juniper Mist portal.

Routing Assuranceis a feature of theJuniper Mist WAN Assurancesolution, providing AI-driven visibility, analytics, and troubleshooting forJuniper Session Smart Routers (SSR)deployed in SD-WAN environments. The system monitors routing performance, link health, and application traffic to ensure reliable WAN connectivity and performance.

According to theJuniper Mist WAN Assurance and Routing Assurance Guide, the feature is described as:

“Routing Assurance provides continuous monitoring of routing operations and path decisions for Juniper Session Smart Routers, offering AI-driven insights into application routing behavior and WAN path health.”

TheSession Smart Router (SSR)platform—powered by128 Technology(acquired by Juniper Networks)—is specifically designed for AI-driven, session-aware routing. It integrates seamlessly with Mist Cloud to:

Track routing changes and path selection decisions.

Correlate application experience with routing behavior.

Identify and remediate path-related issues automatically through Marvis AI.

Other devices serve different functions:

MX Series– Carrier-grade routing, not used in Mist Routing Assurance.

EX Series– Switches used for Wired Assurance.

SRX Series– Firewalls supporting WAN Assurance and security but not Routing Assurance.

Therefore, the correct answer isC. Session Smart Routers.

Juniper Mist Access Assuranceprovidescloud-based network access control (NAC)by integratingRADIUS,identity-based policy enforcement, andWxLAN role-based segmentation. It allows administrators to assign users and devices to specific VLANs or network segments dynamically based on authentication attributes, thereby improving bothsecurityandpolicy granularity.

According to theJuniper Mist Access Assurance Configuration Guide, to enhance network security in a multi-VLAN environment, you should:

“Use EAP-TLS (certificate-based authentication) for secure user identification, and dynamically assign WxLAN roles or VLANs based on Active Directory (AD) group membership.”

Here’s whyDis correct:

EAP-TLSensuresmutual authenticationbetween client and RADIUS server using digital certificates — preventing credential theft or spoofing.

Integrating withActive Directoryallowsrole-based access control (RBAC), enabling dynamic VLAN or WxLAN assignment. This ensures users from different groups (e.g., staff, contractors, guests) are automatically segmented into appropriate network zones.

Option breakdown:

A (MAB): Used for non-802.1X devices (e.g., printers), less secure for user authentication.

B (EAP-TTLS): Username/password-based and less secure than certificate-based EAP-TLS.

C (Host authentication): Verifies devices only, not user identity—insufficient for user-level control.

Therefore, the most secure and scalable configuration is:

✅D. Configure user authentication using EAP-TLS and assign WxLAN roles based on AD user group.

Port profilesinJuniper Mist Wired Assuranceare reusable configuration templates that define how switch ports behave. They streamline switch provisioning and ensure consistent configurations across multiple ports and devices within a site or organization.

According to theJuniper Mist Wired Assurance Configuration Guide, port profiles are defined as:

“A collection of interface-level settings that can be applied to one or more switch ports to simplify configuration and ensure uniform policy enforcement.”

Key characteristics include:

Reusable templates:Port profiles can beassigned to multiple portson one or more switches, allowing rapid deployment and consistent port behavior (e.g., access, trunk, voice VLAN).

Interface-level parameters:They include settings such as VLAN assignments, PoE configuration, speed, duplex, and LLDP options.

Port profilesdo not include routing configurations(those are defined at the Layer 3 interface or VLAN interface level) and arenot limited to a single port.

Therefore, the correct answers are:

A. They can be assigned to multiple ports.

B. They include a set of interface configurations.

In theJuniper Mist Cloud, theClient Eventssection within theMonitoringinterface displays detailed event logs for both wired and wireless clients, providing insights into connectivity, authentication, and performance-related activities. Each event entry may include associated diagnostic files such asdynamic packet captures (DPCs),traceroute data, andsyslogsdepending on the event type and device context.

According to theJuniper Mist AI Operations and Client Event Diagnostics Guide, the platform states:

“Wireless client events provide correlation between client connection attempts and associated diagnostic artifacts such as dynamic packet captures. These files are generated automatically during troubleshooting events and are attached to the event log for administrator review.”

From the exhibit, theclient is shown as a wireless device, indicated by theWi-Fi iconand theSSID association informationvisible in the event details. Additionally, the entry confirms that adynamic packet capture (DPC)file was automatically generated for the event, allowing engineers to download and inspect packet-level activity for root-cause analysis.

Therefore:

B (It is a wireless client)is correct — the event pertains to a Wi-Fi-connected device.

C (A dynamic packet capture file is included)is correct — the log includes a downloadable DPC file.

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.

Marvis Minisis a component of theMarvis Virtual Network Assistant (VNA)within theJuniper Mist AI ecosystem. It is designed to proactively ensure optimal network performance and user experience by runningsynthetic network testsusing Mist-managed access points.

According to theJuniper Mist Marvis Minis Technical Overview, this feature allows APs to act asvirtual clientsthat automatically simulate user connection flows, including authentication, DHCP, DNS, and application reachability. These tests validate that thenetwork configuration and servicesare functioning as expected, even before real users experience issues.

The documentation states:

“Marvis Minis operates in conjunction with Mist AI to continuously validate network configurations and optimize user experience by identifying potential problems proactively.”

“Using Mist APs, Marvis Minis performs synthetic transactions to verify the performance of wireless, wired, and WAN segments without requiring external devices.”

Hence,Marvis Minis is not a support team (A),not a design AI model (B), andMarvis Actions (C)is a different feature for identifying and resolving live issues. The accurate description is thatMarvis Minis collaborates with Mist AI to validate configurations and optimize user experiences.

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.