Juniper Updated JN0-253 Exam Questions and Answers by theodor

When developing areal-time visualization dashboardthat displays client locations on a map, Juniper Mist offers specific APIs and data streaming methods to support dynamic updates.

According to the Juniper Mist Developer Documentation, theWebSocketinterface enables continuous,real-time streaming of client location and telemetry datadirectly from the Mist Cloud. This mechanism is ideal for live dashboards, as it eliminates the need for repeated REST API polling. WebSocket connections provide instant updates whenever a device moves, connects, or disconnects, ensuring the displayed map remains accurate in real time.

TheLive Viewfeature complements this functionality within the Mist Cloud and third-party integrations. It allows administrators and developers toview live location movements of Wi-Fi clients, BLE beacons, and IoT deviceswithin a site’s floor plan. It uses telemetry directly from access points, offering second-by-second updates.

In contrast,RESTful APIsandWebhooksare designed for event-based automation and configuration management rather than live visualization. REST APIs are best for historical or static data retrieval, while Webhooks are used for triggering external actions based on events.

Therefore, the correct functions for real-time map visualization are:

WebSocket (C)— for continuous live data streaming

Live View (D)— for direct map-based visualization of client activity

Marvis Minisis an advanced feature within the Juniper Mist AI ecosystem designed to performautonomous, synthetic network testing. It uses Mist Access Points (APs) to simulate client behavior—such as association, authentication, DHCP, DNS, and application reachability—to proactively detect service issuesbefore real users are affected.

According to theJuniper Mist Marvis Minis Deployment GuideandMarvis AI documentation, the key requirement for enabling Marvis Minis is that all participating access points must be running aminimum supported firmware versionthat includes the Minis agent functionality.

The documentation specifies:

“Marvis Minis requires APs running the minimum firmware version that supports synthetic testing. APs on earlier versions will not be capable of running Minis tests or reporting results to the Mist Cloud.”

Additional subscriptions such asWAN Assurance,Premium Analytics, orWLAN templatesare not prerequisites for operation. WhileMarvis licensingmust be active, the feature itself relies primarily on compatible firmware within the Mist-managed APs.

Therefore, the correct answer isC. Minimum AP firmware— ensuring the APs are on a supported firmware release is essential for Marvis Minis functionality.

Audit Logs in Juniper Mist are used to view a complete record of logins. The documentation states: "On the Audit Logs page, you can see who logged in to the Juniper Mist portal, when they logged in, and what they did." Audit Logs also record configuration and administrative actions by users on all sites within the organization, enabling administrators to track activity for compliance, troubleshooting, and security. This comprehensive record assists with accountability and change tracking, but they do not manage subscriptions, organization setup, or error logs for all devices. Filtering options allow for activity analysis over selectable time periods, by users, and by site to provide detailed insights into administrative behavior and user access history.​

To view an organization’s Audit Logs in the Juniper Mist UI, the required roles are Network Admin and Super User. According to Juniper Mist documentation: “Network Admin (with All Sites access) and Super User roles grant permission to view and interact with organization-level features, including Audit Logs and Inventory.” The Audit Logs page provides a chronological record of user logins and configuration changes, and access is restricted to authorized users for security and compliance reasons. The "Super User" role has full read/write access for the entire organization—no restrictions—allowing these users to view Audit Logs without limitation. The "Network Admin" role, when granted access to All Sites (not just specific sites), can also view Audit Logs as part of their permitted organization-level operations. Other roles, such as Helpdesk and Installer, have limited or specific access and cannot access Audit Logs. These permissions ensure that only trusted network administrators and super users have the necessary authority for sensitive audit and compliance functions.