Juniper JN0-253 Exam With Confidence Using Practice Dumps

TheROAMINGOF elementis part of theMarvis Query Language (MQL), which is the structured query syntax used byMarvis, Juniper’sVirtual Network Assistant (VNA).

According to theJuniper Mist Marvis and MQL Technical Reference, Marvis Query Language provides advanced data query and automation capabilities that go beyond the conversational interface. It allows administrators to directly extract analytical insights, run network diagnostics, and perform queries related touser experience metricsandService Level Expectations (SLEs).

The documentation specifies:

“MQL is the analytical engine of Marvis that uses elements such as ROAMINGOF, CONNECTIVITYOF, and PERFORMANCEOF to query Mist data and retrieve SLE metrics, performance trends, and device events.”

TheROAMINGOFelement specifically relates to theWireless Roaming SLEcategory, enabling Marvis to evaluate client roaming performance across access points, identify failed transitions, and correlate signal quality or capacity-related issues.

While theConversational Assistant (A)uses natural language queries, it translates them internally intoMQLcommands.Marvis Minis (C)runs synthetic tests, andWireless SLE (D)displays performance metrics but does not directly use MQL syntax elements.

Thus, the correct answer isB. Marvis Query Language.

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.

InJuniper Mist’s Location-Based Services, theAsset Visibilityservice utilizes the built-inBluetooth Low Energy (BLE)antenna array within Mist Access Points to track BLE tags and devices inlisten-only mode. This allows the APs to receive BLE signals emitted by assets and compute their real-time location usingangle-of-arrival (AoA)andRSSI-based triangulation.

According to theJuniper Mist Asset Visibility and Location Services Guide:

“When operating in Asset Visibility mode, the vBLE antenna array in Mist Access Points functions in listen-only mode, collecting BLE chirps from asset tags and relaying this data to the Mist Cloud for location determination.”

This configuration differs fromvBLE Engagement, where APs transmit BLE beacons to interact with mobile apps. InAsset Visibility, the BLE array passively listens to track tagged assets (e.g., equipment, IoT devices) across a defined floor map.

Therefore, the correct answer isD. Asset Visibility.