Important Juniper JN0-460 JNCIS-MistAI-Wired Exam Questions

Answer: B, C

Explanation:

Marvis, the AI-driven virtual network assistant in Mist, provides real-time troubleshooting insights for both wired and wireless devices.

When used with Wired Assurance, certain actions require Juniper EX or QFX switches for telemetry collection.

Two of these wired-specific actions are:

Bad Cable Detection -- triggered when electrical faults or poor cable quality are observed through LLDP or physical diagnostics.

Negotiation Mismatch -- triggered when duplex, speed, or link-mode settings are mismatched between peers.

These insights help reduce manual troubleshooting by automating root-cause analysis.

Answer: A, D

Explanation:

A port negotiation mismatch occurs when the local and remote interfaces fail to agree on common speed or duplex settings.

Marvis Wired Assurance automatically detects this by analyzing telemetry from the switch's physical interfaces.

You can resolve this by ensuring auto-negotiation is enabled on both ends (A) and verifying the peer device supports the 802.3 autonegotiation standard (D).

Manually forcing half-duplex or replacing hardware is unnecessary unless the hardware is faulty.

''Marvis Wired Actions correlate interface negotiation errors with LLDP neighbor data to pinpoint mismatched configurations, helping administrators quickly verify speed/duplex compatibility and 802.3 autonegotiation support.''

Juniper Mist Wired Assurance -- Marvis Actions and Insights Guide

Juniper EX Series Switches -- Interface Negotiation Troubleshooting

Answer: D

Explanation:

In the Juniper Mist AI for Wired dashboard, administrators can select one or more switch ports (as shown in the exhibit, e.g., port ge-0/0/25 on an EX4100-48MP). Once configuration changes are made --- such as VLAN assignment, port profiles, PoE settings, or administrative state --- the Save button must be clicked to confirm and apply those changes to the device.

''When making configuration changes in the Mist switch interface, the Save button must be used to confirm the modifications. Clicking Save applies the selected port settings to the switch through Mist Cloud.''

Option A is incorrect: saving does not create a backup. Backups and snapshots are handled through Mist's configuration archive, not via the Save button.

Option B is incorrect: Save does not reset configuration; instead, it commits changes.

Option C is incorrect: there is no preview function tied to Save.

Option D is correct: the Save button is explicitly for applying configuration changes to the selected switch or port(s).

Juniper Mist AI for Wired -- Switch Port Configuration Guide

Juniper Mist AI for Wired -- Wired Assurance Administration Guide

Juniper Mist Documentation -- Managing Switch Interfaces

Answer: C

Explanation:

Juniper Wired Assurance licensing is based on switch port count and supports a range of hardware platforms. Subscriptions are available for 12-port, 24-port, and 48-port models across the EX Series portfolio.

''Wired Assurance subscriptions are available for all supported EX Series switches in 12-port, 24-port, and 48-port license options, aligning to switch hardware configurations.''

Option A: Incorrect --- 24-port only does not cover all options.

Option B: Incorrect --- 12- and 24-port licenses exist, but 48-port is also supported.

Option C: Correct --- Mist supports 12-, 24-, and 48-port subscription tiers.

Option D: Incorrect --- 12-port alone is incomplete.

Juniper Mist AI for Wired -- Licensing and Subscription Guide

Juniper Mist AI Cloud -- Wired Assurance Licensing FAQ

Juniper Networks EX Series -- Licensing and Port-Based Subscription Matrix

Answer: A, D

Explanation:

When a switch is claimed into a Mist organization, it appears in one of several states depending on connectivity and site assignment.

''After claiming, switches initially appear as Unassigned if they are not yet linked to a site. Once online and connected to Mist Cloud, they transition to Connected status and begin receiving configurations and telemetry.''

Option A (Connected): Correct --- indicates the switch is online and communicating with Mist Cloud.

Option B (Inactive): Incorrect --- not a valid device state in Mist.

Option C (Active): Incorrect --- ''Active'' is not a device state label in Mist.

Option D (Unassigned): Correct --- indicates the switch has been claimed but not yet assigned to a site.

Juniper Mist AI for Wired -- Device Claiming and State Management Guide

Juniper Mist Cloud -- Switch Onboarding Workflow

Juniper Mist Wired Assurance -- Device Status Descriptions