Exam: JN0-460

Exam Details
Exam questions are derived from the recommended training and the exam resources listed above. Pass/fail status is available immediately after taking the exam. The exam is only provided in English.

Exam Code JN0-460
Prerequisite Certification JNCIA-MistAI
Delivered by Pearson VUE
Exam Length 90 minutes
Exam Type 65 multiple-choice questions

Recertification
Juniper certifications are valid for three years. For more information, see Recertification.

The Mist AI track enables you to demonstrate a thorough understanding of general Mist AI features and functionality. JNCIS-MistAI-Wired, a specialist-level certification in this track, is designed for wired LAN networking professionals with intermediate knowledge of wired networking using the Mist AI. The written exam for the certification verifies your intermediate understanding of wired networking and Mist AI technology, features, and functionality.

Exam Preparation
We recommend the following resources to help you prepare for your exam. However, these resources aren't required, and using them doesn't guarantee you'll pass the exam.

Recommended Training
Deploying and Managing Juniper Wired Networks for Campus and Branch with Mist AI

Exam Resources
Industry/product knowledge
Juniper TechLibrary

Additional Preparation
Juniper Learning Portal

Exam Objectives
Here’s a high-level view of the skillset required to successfully complete the JNCIS-MistAI-Wired certification exam.


Wired Assurance Fundamentals

Identify the concepts or functionality of Wired Assurance fundamentals.

Solutions
Supported devices
Features and components
MistAI accounts
Subscriptions

Wired Assurance Provisioning or Deployment


Identify the concepts of the provisioning or deploying wired assurance.

Provisioning process
Provisioning options
Deployment options
Configuration options
Templates
Supported architectures
Site variables


Describe how to provision or deploy wired assurance.

Wired Assurance Management or Operations

Identify the concepts or functionality of wired assurance management or operations.

Managing switches
Port profiles
Dynamic port configuration
Service level expectations
Client insights
APIs


Describe how to manage or operate devices using MistAI wired assurance.

Campus Fabric Architecture

Identify the concepts of Campus Fabric Architectures

EVPN multihoming
Campus Fabric Core-Distribution
Campus Fabric IP Clos
GPB and Micro segmentation
CRB versus ERB
Scaling requirements

Describe how to deploy Campus Fabric Architectures.

Campus EVPN-VXLAN

Identify the concepts or functionality of VXLAN

Layer 2 tunneling
Data and control plane operations
VTEP functions
VXLAN gateways

Identify the concepts or functionality of EVPN

Multipath
Route types
Ethernet Segment Identifiers
Route distinguishers
Route targets
Policies
Data and control plane operations
MAC learning

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QUESTION 1
Which statement is correct about a 3-stage campus fabric IP Clos?

A. The distribution layer is connected to the access layer.
B. The distribution layer is connected to the core layer.
C. The core layer is connected to the access layer.
D. The core layer devices are connected to each other.

Answer: C

Explanation:
Junipers official Campus Fabric IP Clos design for Mist Wired Assurance defines that the 3-stage IP
Clos topology eliminates the traditional distribution layer entirely. This architecture is intended for
smaller campus environments that do not need an intermediate distribution layer between the access and core.
oeJunipers Wired Assurance supports 3-Stage and 5-Stage IP Clos deployments. The 3-Stage IP Clos is
targeted towards deployments that do not require a Distribution Layer and have smaller scale requirements.
Because the distribution layer is not present, the only hierarchical connection in a 3-stage campus
fabric is between the core and access layers. Traffic is routed directly at the access layer, and each
access switch acts as a Layer-3 gateway (IRB) for its VLANs.
oeIn a campus fabric IP Clos architecture, Mist provisions Layer-3 (L3) integrated routing and bridging
(IRB) interfaces on the access layer. All the access switches are configured with the same IP address for each L3 subnet.
Additionally, the Juniper documentation explains that point-to-point links are configured between
layers, and in the case of the 3-stage design (with no distribution), this means between the core and access devices:
oeThe point-to-point links between each layer utilize addressing to conserve addresses.
Therefore, the correct statement is C: The core layer is connected to the access layer.
Options A and B incorrectly mention a distribution layer that does not exist in this topology.
Option D is incorrect because core (spine) devices in a Clos fabric are not interconnected with each other.
Reference:
Juniper Mist AI for Wired “ Campus Fabric IP Clos Architecture Guide
Juniper Mist AI for Wired “ Campus Fabric IP Clos Workflow
Juniper Mist AI for Wired “ Configure Campus Fabric IP Clos
Juniper Validated Design “ Campus Fabric IP Clos Deployment Types

QUESTION 2
Which three steps should be part of the campus fabric deployment? (Choose three.)

A. Define the physical connections.
B. Define the networks of interest.
C. Configure the DNS server.
D. Choose the topology.
E. Configure the group-based policy (GBP) tag.

Answer: A, B, D

Explanation:
According to the Juniper Mist AI for Wired “ Campus Fabric IP Clos Deployment Workflow, deploying
a campus fabric involves a defined sequence of planning and configuration steps within the Mist
Cloud interface. The key stages include:
oeTo deploy a campus fabric, you must first define the topology type, identify the physical connections
between devices, and define the networks of interest that will be extended across the fabric.
Breaking this down:
Choose the topology (D): Selecting the correct fabric type (3-Stage or 5-Stage IP Clos) determines
how access, distribution, and core switches will interconnect.
Define the physical connections (A): This step involves specifying the uplink and downlink
relationships between switches so that Mist can auto-generate EVPN-VXLAN and routing
configurations.
Define the networks of interest (B): These are the VLANs and subnets that need to be extended
across the fabric for user and device connectivity.
Steps such as configuring DNS servers or defining GBP tags are not part of the campus fabric
deployment workflow in Mist Wired; they are optional or separate configurations outside the main
deployment flow.
Reference:
Juniper Mist AI for Wired “ Campus Fabric IP Clos Deployment Workflow
Juniper Mist AI for Wired “ Configure Campus Fabric IP Clos
Juniper Validated Design “ Campus Fabric Overview
===========

QUESTION 3
What is the primary benefit of using switch configuration templates?

A. They improve the performance of switches.
B. They reduce Junos OS upgrade times.
C. They make it easier to make switch-specific configuration changes.
D. They provide a consistent configuration for all switches in an organization.

Answer: D

Explanation:
In Juniper Mist AI for Wired, configuration templates are a foundational part of switch onboarding
and management. The primary purpose of these templates is to ensure configuration consistency
across all switches that belong to a specific site or organization.
oeSwitch configuration templates allow administrators to define a standard configuration that is
automatically applied to all switches within a site or organization, ensuring consistency and reducing
configuration errors.
Templates can contain base configuration parameters such as NTP, syslog, VLANs, port profiles, and
authentication settings. When new switches are onboarded to the Mist Cloud, they automatically
inherit the templates configuration, ensuring uniform behavior across the network fabric.
Option A is incorrect ” templates do not directly impact hardware performance.
Option B is incorrect ” templates are not related to upgrade times.
Option C is incorrect ” templates are used for uniformity, not for switch-specific changes.
Option D correctly describes their main benefit ” ensuring consistent configuration across all switches.
Reference:
Juniper Mist AI for Wired “ Switch Configuration Templates Guide
Juniper Mist AI for Wired “ Wired Assurance Administration Guide
Juniper Validated Design “ Mist Wired Configuration Best Practices

QUESTION 4
Referring to the exhibit, what is the purpose of the Save button in the upper-right corner of the Mist dashboard?

A. It generates a backup of the current port configuration.
B. It resets the port configuration to its default settings.
C. It previews the impact of the port configuration changes before applying them.
D. It applies the port configuration changes to the switch.

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 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.
oeWhen 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
Mists 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).
Reference:
Juniper Mist AI for Wired “ Switch Port Configuration Guide
Juniper Mist AI for Wired “ Wired Assurance Administration Guide
Juniper Mist Documentation “ Managing Switch Interfaces

QUESTION 5
You have two sites connected to an EVPN network. Each site is using the 172.16.1.0 network for its own respective site.
How does EVPN prevent overlap in this scenario?

A. It elects a designated forwarder.
B. It uses a Layer 2 gateway.
C. It uses a route distinguisher.
D. It uses an Ethernet segment identifier (ESI).

Answer: C

Explanation:
EVPN, when used with VXLAN, leverages BGP MPLS/VXLAN control plane mechanisms. To prevent
overlapping IP prefixes between different tenants or sites, EVPN uses a Route Distinguisher (RD).
oeIn EVPN-VXLAN, the route distinguisher (RD) makes routes unique when overlapping IP prefixes or
MAC addresses are advertised between multiple tenants or sites.

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