Exam: JN0-253

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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  JN0-253
Prerequisite Certification
Exam Length  90 minutes
Exam Type 65 multiple-choice questions

Exam Objectives
Here is a high-level view of the skillset required to successfully complete the JNCIA-MistAI certification exam.

Exam Objective

Juniper Mist Cloud Fundamentals

Identify fundamental concepts about the Juniper Mist cloud-native architecture, including:
AI concepts
Machine learning
Benefits of using cloud-based management
Juniper Mist cloud capabilities and use cases

Identify the concepts or functionality of Juniper Mist cloud accounts, including:
Creation and management of user accounts
Capabilities of different account roles
Juniper Mist Cloud user/account authentication methods

Describe the concepts or functionality of Juniper Mist initial configurations, including:
Factory default configurations and network connection prerequisites
Device claiming and onboarding
Creation and management of Juniper Mist organizations and sites
Template usage
Labels and policies

Identify the concepts or functionality of Juniper Mist advanced configurations, including:
Subscriptions (Licensing)
Certificates (Radsec, Mist)
Auto provisioning

Juniper Mist Network Operations and Management
Identify concepts or functionality of Juniper Mist wireless network management and operations features:

Benefits and features of Juniper Mist Wi-Fi Assurance
Identify concepts or functionality of Juniper Mist wired network management and operations features:
Benefits and features of Juniper Mist Wired Assurance
Benefits and features of Juniper Mist WAN Assurance
Benefits and features of Juniper Mist Routing Assurance

Identify concepts or functionality of Juniper Mist network access management and features:
Benefits and features of Juniper Mist Access Assurance

Juniper Mist Monitoring and Analytics
Identify the concepts or components of Juniper Mist AI insights, monitoring, and analytics, including:
Service-level expectations (SLEs)
Packet captures
Juniper Mist insights
Alerts
Audit logs

Marvis™ Virtual Network Assistant AI
Identify the concepts or functionality of Marvis Virtual Network Assistant, including:
Marvis actions (organization level, site level)
Marvis queries
Marvis Minis

Location-based Services
Identify the concepts or components of Location-based Services (LBS), including:
Juniper Mist vBLE concepts (such as asset visibility, vBLE engagement)

Juniper Mist Cloud Operations
Identify the concepts or components of Juniper Mist APIs
RESTful
Websocket
Webhook

Identify the options of Juniper Mist support
Support tickets
Update information
Documentation

Key Details:
Exam Code: JN0-253
Certification: JNCIA-MistAI (Juniper Mist AI, Associate)
Focus Areas: Juniper Mist Cloud architecture, WLAN setup, AI-driven features (Marvis), API usage, and network operations.
Question Format: 65 multiple-choice questions (some sources mention scenario-based/drag-and-drop too).
Duration: 90 minutes.
Delivery: Pearson VUE (online proctored or test center).
Language: English only.
Prerequisites: None.
Results: Immediate pass/fail.

What it Covers (Domains):
Juniper Mist Cloud Fundamentals: Architecture, APIs, scalability.
Juniper Mist Configuration Basics: Site, WLAN, SSID setup, policies.
Juniper Mist Network Operations: Firmware, templates, daily tasks.
Mist AI Features: Marvis Virtual Network Assistant, analytics, location services.

This exam validates your ability to use Juniper's AI-driven cloud for managing modern Wi-Fi networks.

---

Sample Question and Answers

QUESTION 1
What are two ways that Juniper Mist Access Assurance enforces network access control? (Choose two.)

A. It creates a VPN using an IPsec tunnel.
B. It monitors network traffic.
C. It assigns specific roles to users.
D. It groups users into network segments.

Answer: C, D

Explanation:
Juniper Mist Access Assurance is a cloud-based network access control service that provides secure
wired and wireless access through identity- and policy-based mechanisms. According to the official
Juniper Mist AI documentation, Access Assurance uses user and device identity to determine
network access privileges dynamically.
The service enforces access policies primarily in two ways:
Assigning Specific Roles to Users:
Access Assurance dynamically assigns roles to users and devices after successful authentication.
These roles are used to apply specific network policies and permissions, defining what level of access
or network resources a user or device is allowed. Roles can be leveraged in wireless SSID
configurations or switch access policies to ensure consistent enforcement across the infrastructure.
Grouping Users into Network Segments:
Access Assurance also allows grouping of users and devices into network segments using VLANs or
Group-Based Policy (GBP) technology. This segmentation isolates users or devices into logical groups,
ensuring security and optimized traffic handling. Policies are then applied to these groups to control
communication between segments, thereby maintaining a zero-trust framework.
Options A and B are incorrect because Access Assurance does not establish VPN tunnels or passively
monitor traffic as its primary method of access control. It relies instead on identity-based role
assignment and segmentation to enforce network security.
Reference:
“ Juniper Mist Access Assurance Data Sheet
“ Juniper Mist Access Assurance Getting Started Guide
“ Juniper Mist AI Cloud Documentation

QUESTION 2
Which statement is correct about the relationship between Juniper Mist organizations and sites?

A. A Juniper Mist superuser login grants access to all organizations.
B. One Juniper Mist organization can contain multiple sites.
C. You must have one Juniper Mist superuser login for each site.
D. One Juniper Mist site can contain multiple organizations.

Answer: B

Explanation:
According to the official Juniper Mist documentation on the configuration hierarchy, the platform
uses a three-tier model: Organization → Site → Device. At the organization level, you manage
administrator accounts, subscriptions, and organization-wide settings. Then:
oeAn organization can include one or more sites. A site can represent a physical location or a logical
subdivision of your enterprise or campus.
Also, in the simpler case explanation:
oeEach customer is created as a separate organization. Within that organization multiple sites can be created.
Mist
These statements make clear that the correct relationship is: one organization may have multiple
sites under it. The inverse ” that a site might contain multiple organizations ” is not supported in
the documented hierarchy. Therefore option B is correct.

QUESTION 3
Exhibit:
Referring to the exhibit, which Roaming Classifier is responsible for the sub-threshold SLEs?

A. Signal Quality
B. WiFi Interference
C. Ethernet
D. Capacity

Answer: D

Explanation:
In the Juniper Mist dashboard, Service Level Expectations (SLEs) are metrics that measure user
experience in key areas such as connection, throughput, and roaming. Each SLE is composed of
classifiers, which help identify the underlying cause of degraded performance or sub-threshold scores.
According to the Juniper Mist AI documentation, the Roaming SLE tracks client transitions between
access points and evaluates the quality of those roaming events. The contributing classifiers typically
include Signal Quality, Wi-Fi Interference, Ethernet, and Capacity.
In this exhibit, the bar for Capacity is the longest under the oeRoaming Classifiers section, indicating
that it has the most significant impact on the Sub-Threshold SLE value (10.6%). This means roaming
performance is primarily being limited by insufficient capacity ” often due to AP radio congestion or
a high number of concurrent clients impacting handoff efficiency.
Hence, the Capacity classifier is responsible for the sub-threshold SLEs.
Reference:
“ Juniper Mist AI Service Level Expectations (SLE) Overview
“ Juniper Mist Dashboard Analytics and SLE Classifiers Guide
“ Juniper Mist Wi-Fi Assurance Documentation

QUESTION 4
How do Wireless Assurance SLEs help administrators troubleshoot?

A. They help streamline the onboarding process.
B. They manage Juniper Mist subscriptions.
C. They customize the Guest User portal.
D. They set benchmarks for network performance and user experiences.

Answer: D

Explanation:
In Juniper Mist AI, Wireless Assurance Service Level Expectations (SLEs) are designed to provide AIdriven
visibility into user experience and network performance. Each SLE represents a specific aspect
of the end-user journey ” such as Time to Connect, Throughput, Coverage, Roaming, Capacity, and
Application Experience.
According to the Juniper Mist documentation, SLEs oedefine measurable benchmarks for user
experience and identify where deviations occur. This allows administrators to quickly determine
whether issues stem from client devices, access points, wired uplinks, or WAN connectivity. When an
SLE metric falls below its threshold, Mist AI automatically highlights the affected classifier (for
example, DHCP, DNS, or Wi-Fi interference) and provides root-cause correlation through AI-driven
insights.
This data-driven approach enables administrators to troubleshoot proactively by focusing on userimpacting
areas instead of raw device statistics. Thus, Wireless Assurance SLEs act as experiencebased
benchmarks that simplify troubleshooting, improve performance visibility, and shorten mean
time to repair (MTTR).
Reference:
“ Juniper Mist Wireless Assurance and SLEs Overview
“ Juniper Mist AI Operations and Analytics Guide
“ Juniper Mist Cloud Documentation on Service Level Expectations

QUESTION 5
You are asked to create a real-time visualization dashboard which displays clients on a map.
Which two Juniper Mist functions would you use in this scenario? (Choose two.)

A. Webhooks
B. RESTful API
C. WebSocket

D. Live View

Answer: C, D

Explanation:
When developing a real-time visualization dashboard that 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, the WebSocket interface enables
continuous, real-time streaming of client location and telemetry data directly 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.
The Live View feature complements this functionality within the Mist Cloud and third-party
integrations. It allows administrators and developers to view live location movements of Wi-Fi
clients, BLE beacons, and IoT devices within a sites floor plan. It uses telemetry directly from access
points, offering second-by-second updates.
In contrast, RESTful APIs and Webhooks are 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
Reference:
“ Juniper Mist Developer API and WebSocket Guide
“ Juniper Mist Location Services and Live View Documentation
“ Juniper Mist Cloud Architecture Overview

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