JN0-252 Mist AI- Associate (JNCIA-MistAI) Questions and Answers

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.

References:

Mist Edge Configuration Guide

Juniper Networks Mist Edge FAQs

Identify the Problem: Suspected issue related to DHCP latency while troubleshooting a wireless client.

Understanding SLEs:

Capacity: Related to the number of clients and bandwidth.

Time to Connect: Measures the time taken for clients to connect, including DHCP latency.

Throughput: Measures the data transfer rate.

Coverage: Measures the signal strength and coverage area.

Selecting the Appropriate SLE:

Time to Connect is the relevant SLE as it includes metrics on DHCP latency, which affects the connection time.

Review the SLE:

Analyze the Time to Connect SLE to identify any latency issues with DHCP.

References:

Mist Documentation on SLEs: Mist Documentation

Marvis Actions is a component of the Mist AI platform that provides a dashboard highlighting actionable items. This dashboard is designed to offer insights and recommendations based on the analysis performed by Marvis AI.

The focus of Marvis Actions is to present users with clear, actionable steps that can improve network performance, resolve issues, and enhance the overall user experience.

By consolidating relevant information and suggested actions, Marvis Actions helps network administrators efficiently address network challenges and optimize operations.

Reference: Juniper Networks documentation on Marvis Actions and its role within the Mist AI ecosystem.

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.

Conclusion:

The correct answer is C (Marvis Actions).

References:

Mist Documentation on System Platform Components: Mist Documentation

Identify the Problem: Alerts are being generated and visible in the Mist GUI, but only some administrators receive the alert emails.

Possible Issues:

User email addresses not correctly formatted.

Email server blocking Mist emails.

Insufficient alert subscriptions.

Administrators not enabling email notifications.

Root Cause:

Since some administrators receive the alerts, email formatting and server blocking issues can be ruled out.

If alert subscriptions were insufficient, no administrators would receive the alerts.

The most likely cause is that the affected administrators have not enabled email notifications in their Mist My Account settings.

Resolution:

Ensure that all administrators have enabled email notifications in their Mist My Account settings.

References:

Mist Documentation on Notifications: Mist Documentation

Installer: The installer role is designed for users who need access to configure and deploy Mist devices. This role typically has the necessary permissions to set up and manage devices but with limited access to other administrative functions​(CertsHero)​.

Network Admin: The network admin role provides comprehensive access to manage network settings, monitor performance, and configure policies. This role is essential for users responsible for the overall network administration and maintenance​(CertsHero)​.

References:

Juniper Networks Documentation

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.

References:

Juniper Mist Claim and Activation Codes

Mist Setup Guide

Mist AI uses reinforcement learning in its Radio Resource Management (RRM) service. This approach allows the system to dynamically optimize the performance of the wireless network by adjusting various radio parameters. The RRM service continuously learns and adapts based on network conditions, user behavior, and environmental factors to ensure optimal performance and reliability.

References:

Juniper Mist AI Overview

Mist AI Technology

In Mist's Service Level Expectations (SLE) framework, the Coverage SLE is responsible for reporting on RF interference.

The Coverage SLE monitors the strength and quality of the wireless signal, ensuring that clients are receiving adequate coverage throughout the network. It also identifies areas where RF interference might be degrading the signal quality.

By tracking RF interference, the Coverage SLE helps administrators diagnose and mitigate issues that could impact wireless performance and user experience.

Reference: Juniper Networks documentation on Mist SLEs and their specific metrics.

Understanding Location Determination in Mist:

Mist uses advanced methods to determine the location of clients in an indoor setting.

Possible Methods:

Triangulation: Uses angles to determine position, but not typically used by Mist.

GPS: Not feasible indoors due to signal limitations.

Probability Surface: Involves calculating the probability of a client's location, but not the primary method used.

Trilateration: Uses the distance from multiple known points to determine the exact location.

Mist's Method:

Mist primarily uses trilateration to determine the location of clients by measuring the distance from at least three access points.

Wi-Fi Location-Based Services (LBS) provided by Mist require the User Engagement subscription.

This subscription includes features that enhance user interactions and engagement, such as location services, which are critical for delivering personalized and location-aware experiences.

By leveraging Wi-Fi LBS with the User Engagement subscription, organizations can offer advanced services like wayfinding, asset tracking, and location analytics.

Reference: Juniper Networks documentation on subscriptions required for Wi-Fi LBS and User Engagement services.

To set up a new WLAN that is Open Access and prevents connected clients from communicating with each other, you should use theConfigure Isolationfeature. This feature, often referred to as client isolation, ensures that each client can only communicate with the access point and not with other clients on the same WLAN.

References:

Juniper Mist WLAN Configuration Guide

Best Practices for WLAN Security

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.

References:

Juniper Networks Documentation

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.

References:

Marvis Actions Overview

Marvis Virtual Network Assistant Datasheet

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.

Reference: Juniper Networks documentation on configuring port alerts within the Mist UI.

When creating a label to be applied to a WLAN template in Mist AI, you should create the label at thesite 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.

References:

Mist AI Documentation

Juniper Networks Site Groups