Juniper JN0-460 Exam Questions in PDF and Online

QUESTION: 9

Which statement is correct about the VXLAN data plane?

The data plane learns the IP addresses of end-user devices.
The data plane advertises the MAC addresses of end-user devices.
The data plane encapsulates the traffic.
The data plane learns the MAC addresses of end-user devices.

Answer(s): C

Explanation:

VXLAN (Virtual Extensible LAN) uses an overlay encapsulation method to carry Layer-2 frames over an IP underlay. This functionality is part of the data plane, which is responsible for packet forwarding and encapsulation/decapsulation.

"In an EVPN-VXLAN fabric, the control plane (via BGP EVPN) learns and advertises MAC and IP information, while the data plane encapsulates and forwards traffic using VXLAN tunnels between VTEPs."

Option A is incorrect: IP learning happens in the control plane, not the data plane.

Option B is incorrect: MAC advertisement is done in the control plane through EVPN route types.

Option D is incorrect: MAC learning is handled by EVPN control plane, not the VXLAN data plane.

Option C is correct: the VXLAN data plane encapsulates the traffic in UDP tunnels between VTEPs.

Reference:

Juniper Mist AI for Wired EVPN-VXLAN Overview

Juniper Validated Design EVPN-VXLAN Control and Data Plane Separation

Junos OS EVPN-VXLAN Deployment Guide

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QUESTION: 10

What are two unique advantages about configuration automation in Wired Assurance? (Choose two.)

100% open APIs
client SLEs
programmable workflows
switch insights

Answer(s): A,C

Explanation:

Wired Assurance in Mist Cloud provides automated configuration for Juniper EX Series switches. The automation is built on open APIs and supports programmable workflows, which allow seamless integration with external systems and reduce manual configuration errors.

"Wired Assurance leverages 100% open APIs, enabling integration with third-party automation and orchestration tools. Combined with programmable workflows, this provides a consistent and scalable automation framework for switch deployment and management."

Option A (100% open APIs): Correct -- APIs enable automation and external integration.

Option C (programmable workflows): Correct -- workflows automate repetitive tasks and provisioning.

Option B (client SLEs): Incorrect -- this is part of user experience monitoring, not automation.

Option D (switch insights): Incorrect -- this relates to telemetry and visibility, not automation.

Reference:

Juniper Mist AI for Wired Wired Assurance Overview

Juniper Mist AI for Wired Switch Automation and APIs Guide

Juniper Validated Design Mist Wired Automation Best Practices

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QUESTION: 11

In Juniper Mist cloud services, service level expectation (SLE) telemetry is collected from every device and stored for up to how long?

1 month
2 months
7 days
24 hours

Answer(s): A

Explanation:

Juniper Mist AI collects telemetry for Service Level Expectations (SLEs) across wired and wireless devices. This telemetry includes metrics such as time-to-connect, throughput, coverage, and switch performance.
"Service Level Expectation (SLE) data is collected from every device and stored for up to one month in the Mist Cloud. This allows administrators to analyze historical performance trends and troubleshoot issues based on real-time and historical data." Option B (2 months): Incorrect -- data is not retained this long. Option C (7 days): Incorrect -- telemetry retention is longer. Option D (24 hours): Incorrect -- too short for Mist SLE analytics. Option A (1 month): Correct -- Mist Cloud retains SLE telemetry for 30 days (1 month).

Reference:

Juniper Mist AI for Wired Service Level Expectations Overview Juniper Mist AI for Wired Telemetry and Data Retention Guide ===========

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QUESTION: 12

Which campus fabric architecture supports Layer 3 gateways at the distribution layer?

campus fabric core/distribution centrally-routed bridging (CRB)
campus fabric IP Clos
campus fabric core/distribution edge-routed bridging (ERB)
EVPN multihoming

Answer(s): C

Explanation:

In Juniper's campus fabric architectures, the location of the Layer 3 gateway (IRB) differentiates between CRB and ERB models:
Centrally-Routed Bridging (CRB): L3 gateways are placed at the core layer. Edge-Routed Bridging (ERB): L3 gateways are placed at the distribution layer, closer to the edge. "In the ERB model, Layer 2 gateways are deployed at the access layer, and Layer 3 gateways are deployed at the distribution layer."
Option A (CRB): Incorrect -- L3 is at the core, not distribution. Option B (IP Clos): Incorrect -- in 3-stage Clos, L3 is pushed to the access layer. Option D (EVPN multihoming): Incorrect -- this is about redundancy, not gateway placement. Option C (ERB): Correct -- L3 gateways sit at the distribution layer in the ERB architecture.

Reference:

Juniper Mist AI for Wired Campus Fabric Architecture Models

Juniper Validated Design Core/Distribution CRB vs ERB Gateways Junos OS EVPN-VXLAN Campus Fabric Deployment Guide

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QUESTION: 13

You have deployed your switches and need to provide a unique hostname on each switch.
Which Mist dashboard option allows you to accomplish this task?

Organization switch template
Site switch configuration
Individual switch configuration
Device profiles

Answer(s): C

Explanation:

In Juniper Mist Cloud, there are multiple configuration scopes:
Organization-level templates apply globally.
Site-level configuration applies across all devices in a site. Individual switch configuration is used to define unique, device-specific attributes such as hostname, management IP, or local overrides.
"Templates and site-level configuration ensure consistency across devices, while individual switch configuration is used to assign unique values such as hostnames." Option A: Incorrect -- org templates define common config, not hostnames. Option B: Incorrect -- site configs are shared across all switches in the site. Option D: Incorrect -- device profiles apply settings like port policies or authentication, not hostnames.
Option C: Correct -- individual switch configuration is the correct place to assign hostnames uniquely per device.

Reference:

Juniper Mist AI for Wired Switch Configuration Hierarchy Juniper Mist Documentation Device-Level Configuration in Wired Assurance ===========

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QUESTION: 14

Which two statements are correct about the campus fabric core-distribution architecture? (Choose two.)

Only the core and distribution tiers are part of the EVPN-VXLAN topology.
Only the core tier participates in the EVPN-VXLAN topology.
The access tier is included in the EVPN-VXLAN topology.
The access tier does not participate in the EVPN-VXLAN topology.

Answer(s): A,D

Explanation:

In a core-distribution campus fabric model, the EVPN-VXLAN overlay is established only between the core and distribution tiers. The access switches are not part of the EVPN fabric; they connect upstream to distribution but do not run VXLAN tunnels. "In the core-distribution campus fabric, only the core and distribution layers participate in the EVPN- VXLAN topology. The access layer connects to the distribution switches and forwards traffic but does not take part in the EVPN-VXLAN fabric."
Option A: Correct -- EVPN-VXLAN is built between core and distribution tiers. Option B: Incorrect -- both core and distribution participate, not just core. Option C: Incorrect -- access switches are excluded from EVPN-VXLAN participation.

Option D: Correct -- the access layer does not participate in EVPN-VXLAN.

Reference:

Juniper Mist AI for Wired Campus Fabric Core-Distribution Architecture Juniper Validated Design EVPN-VXLAN Campus Deployment Models Junos OS EVPN Campus Fabric Design Guide

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QUESTION: 15

What information does Mist use to determine if the port is classified as an uplink? (Choose two.)

if TX and RX are higher than the rest of the ports
if the port has an MTU greater than 1500 configured
if the port is an STP root port
if the port has a description configured

Answer(s): A,C

Explanation:

Juniper Mist automatically classifies ports to simplify visibility and automation within Wired Assurance. The Mist cloud analyzes port telemetry and link behavior to determine port roles, including uplinks.
"Mist uses machine learning and switch telemetry to automatically detect uplinks by analyzing traffic behavior and topology information. Uplink ports typically exhibit higher TX/RX utilization and are identified as spanning-tree root or forwarding ports connecting upstream devices." Option A: Correct -- Mist examines traffic statistics. Ports with significantly higher TX/RX utilization relative to others are likely uplinks.
Option B: Incorrect -- MTU size is not a classification criterion. Option C: Correct -- Mist uses STP information (root or designated port status) to identify uplinks. Option D: Incorrect -- port description fields are for administrative purposes only and are not used by Mist analytics.

Reference:

Juniper Mist AI for Wired Port Role Classification and Telemetry Juniper Mist AI for Wired Automated Uplink Detection and Insights Juniper Wired Assurance Analytics Guide

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QUESTION: 16

Which two statements are correct about the EVPN-VXLAN control plane? (Choose two.)

The control plane encapsulates the traffic.
The control plane learns the MAC addresses of end-user devices.
The control plane learns the IP addresses of end-user devices.
The control plane rewrites the destination MAC address of the packet.

Answer(s): B,C

Explanation:

In an EVPN-VXLAN fabric, the control plane operates over BGP EVPN and is responsible for distributing endpoint reachability information (MAC and IP) among VTEPs. The data plane, by contrast, performs encapsulation and forwarding.
"The EVPN control plane uses BGP to exchange MAC and IP address reachability information between VTEPs, enabling efficient forwarding and loop prevention without relying on flood-and- learn behavior."
Option A: Incorrect -- encapsulation occurs in the data plane, not the control plane. Option B: Correct -- the control plane distributes MAC-to-VTEP mappings. Option C: Correct -- the control plane also distributes IP-to-MAC associations (Type 2 and Type 5 EVPN routes).
Option D: Incorrect -- the control plane does not alter packet headers.

Reference:

Juniper Mist AI for Wired EVPN-VXLAN Overview
Juniper Validated Design EVPN Control and Data Plane Operation Junos OS EVPN-VXLAN Implementation Guide

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Juniper Mist AI Wired, Specialist (JNCIS-MistAI-Wired) JN0-460 Exam Questions in PDF

Free Juniper JN0-460 Dumps Questions (page: 3)

QUESTION: 9

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QUESTION: 11

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QUESTION: 16

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