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

Identify the Changes: Radio Resource Management (RRM) changes and their timings.

RRM Changes:

Channel and power settings based on long-term statistics.

RF template changes to channel width.

Changes triggered by SSID scheduling.

Changes triggered by DFS events.

Timing of Changes:

Long-term RRM changes to channel and power settings are typically scheduled once a day to avoid disrupting network performance.

Conclusion:

Channel and power settings across a site based on long-term statistics and baselines are made once a day between 2:00 AM and 3:00 AM local time.

References:

Mist Documentation on RRM: Mist Documentation

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.

References:

Juniper Mist WLAN Configuration Guide

Site and Org Level Configration.

For capacity, coverage, and throughput Service Level Expectations (SLEs) in Mist AI, throughput is measured in Mbps. This unit measures the rate at which data is successfully delivered over the wireless network, providing a clear indication of network performance and user experience. Mist AI tracks these metrics to ensure the network meets the required performance standards.

References:

Wireless Throughput SLE

Service Level Expectations (SLE)

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.

Agile Feature Updates and Bug Fixes: Juniper Mist's microservices architecture allows for rapid development and deployment of new features and bug fixes. This agility ensures that improvements and fixes can be rolled out continuously without impacting the entire system​(CertsHero)​.

Increased Scalability: The microservices approach enables horizontal scaling, where individual services can be scaled independently based on demand. This allows the system to handle increased load efficiently​(CertsHero)​.

Implementation of Machine Learning: Juniper Mist's architecture leverages machine learning within its microservices to provide intelligent network management and predictive analytics. This enhances the capability of the system to optimize performance and troubleshoot issues proactively​(Juniper Networks)​​(CertsHero)​.

References:

Juniper Networks Documentation

Mist Administrative Logins: Mist administrative logins can utilize Single Sign-On (SSO), allowing administrators to log in using their corporate credentials, enhancing security and ease of access.

Guest User Access: Guest user access cannot use SSO, as SSO is intended for internal users and administrators rather than external guest users who access the network.

References:

Mist SSO Configuration Guide

SSO Integration Overview

In the Mist architecture, an organization is a higher-level entity that can contain multiple sites.

A. A site is contained within an organization:Each site operates under the umbrella of an organization, allowing centralized management and policy enforcement.

B. 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.

Reference: Juniper Networks documentation on organizational structure and site management in Mist.

Line of Sight: For optimal accuracy and stability of location-based services, each access point (AP) should have an unobstructed line of sight to at least two other APs. This ensures robust triangulation and accurate location tracking.

Ceiling Mounting: Mounting APs on the ceiling with the LED facing the floor is recommended. This position provides the best coverage and performance for both Wi-Fi and BLE signals, essential for reliable location services.

References:

Juniper Mist Deployment Guide

Best Practices for AP Placement

Top of Form

Bottom of Form

Asset Tracking: Asset tracking is a common use case in LBS deployments, enabling organizations to locate and manage assets in real-time. This is particularly useful in environments like hospitals, warehouses, and large corporate campuses where knowing the precise location of equipment can save time and improve efficiency​(CertsHero)​.

Wayfinding: Wayfinding helps users navigate through complex environments, such as large buildings, airports, and shopping malls. By providing real-time navigation assistance, LBS enhances the user experience and improves accessibility within these spaces​(CertsHero)​.

References:

Juniper Networks Documentation

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.

References:

Mist Location Services Documentation

Juniper Location Deployment Guide

Event-Driven API: Webhooks are used as an event-driven API in Mist. They allow the system to send real-time notifications to external systems when specific events occur, enabling immediate actions or alerts.

References:

Juniper Networks Documention.

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

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.

References:

Mist Wireless Security Documentation

RADIUS Configuration Guide

Understanding Marvis Queries:

Marvis is the AI-driven virtual network assistant in Mist that helps with queries and troubleshooting.

Language Used for Queries:

Natural Language: Marvis is designed to understand and respond to natural language queries, making it user-friendly.

Python, C++, SQL: These are programming and query languages not used directly for Marvis queries.

Conclusion:

The correct answer is A (Natural Language).

References:

Mist Documentation on Marvis: Mist Documentation

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.

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.

References:

Juniper HTTP Methods Documentation

Web Development Basics