JN0-252 Exam Dumps - Juniper JNCIA-MistAI Questions and Answers

When several APs fail to update to the latest firmware during a scheduled downtime, Marvis categorizes this issue as a "non-compliant" action.

This categorization indicates that some APs are not adhering to the intended firmware version policy, which could potentially affect network performance or security.

The non-compliant Marvis Action provides administrators with the necessary information to identify and rectify the issue, ensuring all APs are updated as required.

Reference: Juniper Networks documentation on Marvis Actions and firmware compliance.

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

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

Wi-Fi Related SLEs in Mist UI:

SLEs (Service Level Expectations) help monitor and ensure Wi-Fi network performance.

Visible SLEs:

Capacity:

B: Capacity SLE monitors the network's ability to handle the number of connected clients and their bandwidth requirements.

Throughput:

D: Throughput SLE measures the data transfer rates, ensuring that the network meets the expected performance levels.

Other Options:

Switch Health: Relates to wired network performance, not Wi-Fi.

Application Health: Generally focuses on application performance, not specifically Wi-Fi.

Conclusion:

The correct answers are B and D.

References:

Mist Documentation on Wi-Fi SLEs: Mist Documentation

Cloud-ready Switch: To use the Wired Visibility option in Juniper Mist Wireless Assurance, a cloud-ready switch must be deployed in the network. This ensures that the switch can communicate effectively with the Mist cloud for management and monitoring.

SNMP Protocol Configuration: The Simple Network Management Protocol (SNMP) must be configured on the switch. SNMP enables the monitoring and management of network devices, allowing Mist AI to collect necessary data for visibility and assurance.

References:

Juniper Mist Wired Assurance Overview

Juniper Mist Wired Assurance Configuration Guide

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)​​(CertEnsure)​.

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.

Incorrect Options:

MQTT: While MQTT is a lightweight messaging protocol often used in IoT, it is not the protocol used by Mist cloud for AP communication.

SSH: Secure Shell (SSH) is primarily used for secure remote command-line access and not for the primary communication between Mist cloud and APs.

PPTP: Point-to-Point Tunneling Protocol (PPTP) is used for implementing VPNs and is not relevant to the communication between Mist cloud and access points.

References:

Juniper Networks Documentation: Mist Cloud Communication

Time Zone Importance: Setting the correct time zone for a Mist site ensures that all events and logs are timestamped accurately according to the local time of the site. This is crucial for effective monitoring and troubleshooting.

Facilitation of Troubleshooting: By aligning event timestamps with the local time, network administrators can correlate events more easily with specific incidents reported by users, thereby simplifying the troubleshooting process.

References:

Juniper Networks Documentation

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.

Installer Role in Mist:

The Installer role is designed for initial site setup and configuration.

Access Duration:

By default, the Installer role has temporary access for a specific duration to ensure security and control.

Default Access Duration:

7 days: Installers typically have access to a site for 7 days, enough time to complete initial setup and configuration before access expiration.

Conclusion:

The correct answer is A.

References:

Mist Documentation on Role-Based Access: Mist Documentation

In the context of Mist management, "brownfield" switches refer to those that are already configured and deployed in a network, while "greenfield" switches are new and have no pre-existing configuration.

Mist supports the integration and management of both brownfield and greenfield switches within the same site. The crucial requirement is that all switches, regardless of their initial state, must be running a version of Junos that is supported by Mist.

This compatibility ensures that Mist can apply policies, configurations, and monitoring uniformly across all devices, facilitating a seamless management experience.

Reference: Juniper Networks documentation on Mist AI and Junos compatibility requirements.