매달, 우리는 1000명 이상의 사람들이 시험 준비를 잘하고 시험을 잘 통과할 수 있도록 도와줍니다.
Mist AI, Associate (JNCIA-MistAI) 온라인 연습
최종 업데이트 시간: 2025년12월31일
당신은 온라인 연습 문제를 통해 Juniper JN0-253 시험지식에 대해 자신이 어떻게 알고 있는지 파악한 후 시험 참가 신청 여부를 결정할 수 있다.
시험을 100% 합격하고 시험 준비 시간을 35% 절약하기를 바라며 JN0-253 덤프 (최신 실제 시험 문제)를 사용 선택하여 현재 최신 333개의 시험 문제와 답을 포함하십시오.
정답:
Explanation:
In Juniper Mist Wireless Assurance, the Coverage SLE (Service Level Expectation) measures the quality and consistency of Wi-Fi signal coverage across an organization’s wireless infrastructure. It provides insight into how well clients can connect to access points with sufficient signal strength and quality.
According to the Juniper Mist AI Operations and Analytics Guide, the Coverage SLE is defined as:
“The percentage of client connections that meet the minimum signal strength threshold required for satisfactory performance. Sub-threshold values represent areas where coverage is inadequate or inconsistent.”
In the exhibit, the SLE visualization shows 79% successful coverage and 21% unsuccessful coverage, meaning that 21% of connection attempts or client areas did not meet the desired signal strength threshold.
These failures may be caused by factors such as:
Insufficient AP density or placement.
RF interference from neighboring devices.
Physical obstructions impacting signal propagation.
Thus, the unsuccessful coverage percentage is 21%, indicating potential areas where additional APs or configuration optimization may be needed to improve user experience.
Reference:
C Juniper Mist Wireless Assurance and SLE Documentation
C Juniper Mist AI Operations and Troubleshooting Guide
C Juniper Mist Cloud Analytics and Coverage Metrics Overview
정답:
Explanation:
The Juniper Mist Cloud operates as a regionally distributed cloud infrastructure, where each geographic region (for example, US, EU, APAC) hosts its own isolated Mist Cloud instance. This design ensures compliance with regional data privacy regulations, improves network performance, and enhances scalability and reliability.
According to the Juniper Mist Cloud Administration and Operations Guide, user accounts and organizations are region-specific, meaning:
“Users and organizations exist within specific regional Mist Clouds. A user account created in one regional cloud is valid only within that region and cannot be used to access organizations hosted in another cloud.”
This structure ensures data sovereignty and security while maintaining logical separation between regions. When administrators create a new user, that user’s credentials and access privileges apply only to the Mist Cloud region in which the user was created.
Therefore:
B is correct because users created in a regional cloud can only manage organizations within that same cloud.
C is correct because a newly created user is enabled only for the regional cloud where it was registered.
Options A and D are incorrect because Mist Clouds are isolated ― cross-region user or organization access is not supported.
Reference:
C Juniper Mist Cloud Administration and Operations Guide
C Juniper Mist Cloud Regional Deployment and Data Residency Documentation
C Juniper Mist Cloud Fundamentals and Architecture Study Guide
정답:
Explanation:
Routing Assurance is a feature of the Juniper Mist WAN Assurance solution, providing AI-driven visibility, analytics, and troubleshooting for Juniper Session Smart Routers (SSR) deployed in SD-WAN environments. The system monitors routing performance, link health, and application traffic to ensure reliable WAN connectivity and performance.
According to the Juniper Mist WAN Assurance and Routing Assurance Guide, the feature is described as:
“Routing Assurance provides continuous monitoring of routing operations and path decisions for Juniper Session Smart Routers, offering AI-driven insights into application routing behavior and WAN path health.”
The Session Smart Router (SSR) platform―powered by 128 Technology (acquired by Juniper Networks)―is specifically designed for AI-driven, session-aware routing. It integrates seamlessly with Mist Cloud to:
Track routing changes and path selection decisions.
Correlate application experience with routing behavior.
Identify and remediate path-related issues automatically through Marvis AI.
Other devices serve different functions:
MX Series C Carrier-grade routing, not used in Mist Routing Assurance.
EX Series C Switches used for Wired Assurance.
SRX Series C Firewalls supporting WAN Assurance and security but not Routing Assurance.
Therefore, the correct answer is C. Session Smart Routers.
Reference:
C Juniper Mist WAN Assurance and Routing Assurance Guide
C Juniper Mist Cloud SD-WAN Operations Documentation
C Juniper Session Smart Router Technical Overview
정답:
Explanation:
Radio Resource Management (RRM) is a key feature of Juniper Mist Wireless Assurance that uses AI-driven automation to dynamically adjust radio settings across access points (APs) for optimal wireless performance. The RRM engine ensures proper channel assignment, transmit power control, and interference management across the network.
According to the Juniper Mist Wireless Assurance and AI-Driven RRM Guide, RRM operates in two modes:
Event-Driven RRM:
This mode reacts immediately to real-time changes in the RF environment, such as new access points, interference spikes, or client density changes.
Global Optimization RRM:
This process runs as a scheduled, system-wide optimization once per day to evaluate the overall RF environment and redistribute channels and power settings network-wide for the best balance of coverage and capacity.
The documentation states:
“The RRM global optimization algorithm automatically executes once daily to ensure optimal channel and power planning across all APs.”
Thus, the correct answer is D C The RRM global optimization system automatically runs once a day.
Reference:
C Juniper Mist Wireless Assurance and RRM Configuration Guide
C Juniper Mist AI-Driven Radio Resource Optimization Documentation
C Juniper Mist Cloud Operations and RF Management Overview
정답:
Explanation:
In the Juniper Mist AI ecosystem, the intelligence behind Mist’s automation and insight generation is driven by machine learning (ML) and artificial intelligence (AI) models. These models enable Mist AI to identify trends, predict network issues, and automate remediation through the Marvis Virtual Network Assistant (VNA).
According to the Juniper Mist AI and Machine Learning Overview, Mist AI utilizes several core ML
paradigms:
“Mist AI leverages supervised, unsupervised, reinforcement, and deep learning models to interpret telemetry data, recognize behavioral patterns, and make predictive adjustments for network optimization.”
Supervised Learning C Uses labeled data for training, allowing Mist AI to identify known issues (e.g., DHCP failures or high latency).
Unsupervised Learning C Detects anomalies or patterns in unlabeled datasets (e.g., identifying abnormal client behavior).
Reinforcement Learning C Continuously improves network performance by using feedback from outcomes of previous actions.
Deep Learning C Employs neural network models for complex pattern recognition and predictive analytics.
These combined learning approaches enable Mist AI to evolve autonomously and maintain accuracy through its AI efficacy loop.
Therefore, the correct answer is D. Supervised, unsupervised, reinforcement, and deep learning.
Reference:
C Juniper Mist AI and Machine Learning Overview
C Juniper Mist AI Cloud Architecture and Predictive Analytics Guide
C Juniper Mist Marvis Virtual Network Assistant Technical Documentation
정답:
Explanation:
The Juniper Mist Wired Assurance platform uses a hierarchical configuration model to manage switch settings efficiently across organizations and sites. This hierarchy provides flexibility by allowing administrators to apply global configurations through templates at the organization level, while also permitting site-specific customizations.
According to the Juniper Mist Wired Assurance Configuration and Template Management Guide, the configuration hierarchy functions as follows:
“Switch templates can be created at both the organization and site levels. Organization-level templates define global configurations, while site-level templates provide location-specific customization that overrides the organization-level settings where applicable.”
This structure enables consistent policy deployment while preserving site autonomy for unique configurations. For example, global VLAN or QoS configurations can be managed at the organization level, and local templates can adjust settings for switch ports or device groups at specific sites.
Switch-specific overrides are allowed within the hierarchy, ensuring flexibility in cases where unique port or feature configurations are required.
Therefore:
B is correct because switch templates exist at the organization level for global use.
C is correct because switch templates also exist at the site level for localized adjustments.
Reference:
C Juniper Mist Wired Assurance Configuration and Template Management Guide
C Juniper Mist Cloud Hierarchical Configuration Documentation
C Juniper Mist Wired Assurance and EX/QFX Management Overview
정답:
Explanation:
The Mist AI Efficacy Loop is a key concept within the Juniper Mist AI architecture that ensures continuous improvement of its machine learning (ML) and artificial intelligence (AI) models. This process combines feedback and data collected from multiple sources ― including real-world network telemetry, customer success feedback, domain experts, and the Mist data science team ― to refine the AI algorithms and enhance prediction accuracy.
According to the Juniper Mist AI Operations and Architecture Guide, the process is described as follows:
“The Mist AI efficacy loop is a closed-loop feedback system that continuously collects data from the field, correlates it with expert knowledge and support insights, and uses it to retrain and improve AI models for greater accuracy and reliability.”
This iterative learning cycle allows Mist AI to:
Improve anomaly detection precision.
Reduce false positives in network issue detection.
Enhance Marvis’s ability to accurately identify root causes and recommend corrective actions.
The efficacy loop is what differentiates Mist AI from static analytics platforms, as it creates a self-learning system that evolves with every deployment and customer interaction.
Therefore, the correct answer is B. Mist AI efficacy loop.
Reference:
C Juniper Mist AI Operations and Architecture Guide
C Juniper Mist AI Cloud Fundamentals Documentation
C Juniper Mist AI and Machine Learning Study Guide
정답:
Explanation:
In the Juniper Mist Cloud platform, user roles define the scope of permissions that determine what administrative functions an individual can perform within an organization. The Super User role represents the highest level of administrative authority within a Juniper Mist organization and carries full control over both organization-wide and site-specific configurations.
According to the Juniper Mist Cloud Administration and User Management documentation, the
Super User role is described as:
“The Super User role provides full read and write access across the entire organization. Only Super Users can manage organization-level settings, add or remove other administrators, and assign privileges to users.”
This means that only a Super User can add new administrators, manage subscription entitlements, configure organization-level policies, and perform full lifecycle device management. Unlike site administrators, Super Users are not restricted to specific locations―they have unrestricted visibility and control across all sites within the organization.
Therefore, the correct answer is D, since the Super User role is explicitly required to add administrators to an organization and perform top-level management operations.
Reference:
C Juniper Mist Cloud Administration and User Management Guide
C Juniper Mist Organization and Role-Based Access Control Documentation
C Juniper Mist Cloud Fundamentals and User Roles Study Guide
정답:
Explanation:
Within the Juniper Mist Wireless Assurance dashboard, the Capacity SLE (Service Level Expectation) provides visibility into how well the network can handle concurrent users and traffic loads. It identifies the contributing factors, or classifiers, responsible for degraded capacity performance such as Wi-Fi interference, network issues, Ethernet problems, or authorization delays.
According to the Juniper Mist AI Operations and SLE Analytics Guide, the platform:
“Uses classifiers to break down SLE metrics and identify which network factors most heavily contribute to sub-threshold performance.”
In the exhibit, the Wi-Fi interference classifier has the longest bar reaching the full 17%, clearly showing it as the largest contributor to capacity degradation. Wi-Fi interference occurs when multiple APs or nearby wireless networks overlap on the same channel, resulting in increased contention, collisions, and reduced airtime availability ― all of which impact overall capacity.
Therefore, the correct answer is D. Wi-Fi Interference.
Reference:
C Juniper Mist Wireless Assurance SLE and Classifier Documentation
C Juniper Mist AI Operations and Analytics Guide
C Juniper Mist Dashboard and Troubleshooting Insights Overview
정답:
Explanation:
In the Juniper Mist Cloud licensing model, subscriptions represent service entitlements that enable specific features such as Wireless Assurance, Wired Assurance, WAN Assurance, Marvis Virtual Network Assistant, and Premium Analytics. These subscriptions are managed at the organization level and are not permanently tied to individual hardware units.
According to the Juniper Mist Licensing and Subscription Management Guide, subscriptions are:
“Cloud-based entitlements associated with an organization, not bound to specific device serial numbers. Devices draw from the subscription pool dynamically.”
This design allows flexibility and simplifies device replacement or scaling:
When a new device (for example, an access point or switch) is added to the organization, the subscription is automatically assigned to it from the available pool.
If a device is removed or fails, the subscription is automatically released and reassigned to a replacement unit―no manual transfer is required.
Therefore:
A is correct because subscriptions are not linked to a single device’s serial number.
D is correct because subscriptions automatically reapply when replacement devices are onboarded.
Options B and C are incorrect because Juniper Mist subscriptions are organization-based, not hardware-bound, and require no manual reassignment after device failure or replacement.
Reference:
C Juniper Mist Cloud Licensing and Subscription Management Guide
C Juniper Mist Organization and Device Lifecycle Documentation
C Juniper Mist Cloud Operations and Entitlement Management Overview
정답:
Explanation:
Juniper Mist Access Assurance provides cloud-based network access control (NAC) by integrating RADIUS, identity-based policy enforcement, and WxLAN role-based segmentation. It allows administrators to assign users and devices to specific VLANs or network segments dynamically based on authentication attributes, thereby improving both security and policy granularity.
According to the Juniper Mist Access Assurance Configuration Guide, to enhance network security in a multi-VLAN environment, you should:
“Use EAP-TLS (certificate-based authentication) for secure user identification, and dynamically assign WxLAN roles or VLANs based on Active Directory (AD) group membership.”
Here’s why D is correct:
EAP-TLS ensures mutual authentication between client and RADIUS server using digital certificates ― preventing credential theft or spoofing.
Integrating with Active Directory allows role-based access control (RBAC), enabling dynamic VLAN or WxLAN assignment. This ensures users from different groups (e.g., staff, contractors, guests) are automatically segmented into appropriate network zones.
Option breakdown:
A (MAB): Used for non-802.1X devices (e.g., printers), less secure for user authentication.
B (EAP-TTLS): Username/password-based and less secure than certificate-based EAP-TLS.
C (Host authentication): Verifies devices only, not user identity―insufficient for user-level control. Therefore, the most secure and scalable configuration is:
✅ D. Configure user authentication using EAP-TLS and assign WxLAN roles based on AD user group.
Reference:
C Juniper Mist Access Assurance Deployment and Configuration Guide
C Juniper Mist Cloud NAC and 802.1X Authentication Documentation
C Juniper Mist Secure Access and WxLAN Role-Based Policy Guide
정답:
Explanation:
In the Juniper Mist WAN Assurance and SD-WAN framework, Forwarding Insights is the feature responsible for providing application forwarding path visibility. It delivers detailed analytics on how application traffic is being routed across the WAN, enabling network administrators to understand and optimize application performance across multiple WAN links or paths.
According to the Juniper Mist WAN Assurance and Insights Documentation, Forwarding Insights:
“Provides visibility into the application forwarding path by showing which WAN link or tunnel is used for a specific flow, including health metrics such as latency, loss, and jitter.”
It integrates with Marvis and the AI-driven WAN Assurance engine to automatically correlate user experience with network transport behavior.
Administrators can use Forwarding Insights to:
Identify which path (primary, secondary, or backup) an application flow takes.
View real-time performance metrics such as round-trip delay and packet loss per path.
Understand why path selection decisions were made, based on policy or link health.
Other options are incorrect:
A. Router Insights focuses on routing and device-level performance, not per-application path details.
B. WAN Edge Insights provides device health and site connectivity data, not application-level forwarding analytics.
D. Platform Insights covers cloud infrastructure performance, not WAN traffic analysis.
Thus, the correct answer is C. Forwarding Insights.
Reference:
C Juniper Mist WAN Assurance and Forwarding Insights Technical Guide
C Juniper Mist AI-Driven SD-WAN Operations Documentation
C Juniper Mist Cloud Analytics and Insights Overview
정답:
Explanation:
When creating a new site in the Juniper Mist User Interface, the three required configuration settings are Site Name, Country, and Location. According to Juniper Mist's official configuration guides: "At a minimum, enter the name, time zone, and location..." The 'Information' section of site setup requires the Site Name (a descriptive name to identify the site), Country (which sets regulatory and RF domain requirements), and Location (address or geo-coordinates for the site). These form the basis of the site identity in the Mist cloud and are mandatory for dashboard visibility, compliance, and baseline RF configuration. An RF Template, though critical for wireless tuning, is optional and can be assigned post-site creation. Active Hours are not required for the default site setup and are related to scheduling analytics or location-based services, not to the core creation workflow.
Reference: Juniper Mist Configure a Site, Site Configuration Settings Guide, Mist Management Guide
정답:
Explanation:
In the Juniper Mist SD-WAN solution, device-specific WAN Edge templates are used to streamline the deployment and configuration of Juniper SRX or SSR (Session Smart Router) devices serving as WAN Edge nodes. These templates ensure consistent and accurate configurations across a distributed WAN environment while accounting for differences in hardware models and interface types.
According to the Juniper Mist WAN Assurance and SD-WAN Configuration Guide, device-specific templates:
“Automatically generate configuration elements tailored to the hardware platform, including interfaces, ports, and device capabilities.”
They are part of Mist’s cloud-managed SD-WAN automation framework, which combines WAN Assurance and AI-driven insights to manage branch connectivity. The templates simplify provisioning by populating device-level parameters such as:
Interface naming and mapping based on the device model.
Hardware-specific configurations like tunnel endpoints, IP addressing, and routing settings.
Security and performance policies consistent with the organization’s SD-WAN design.
Options A, C, and D are incorrect because:
A (WLAN template automation) pertains to wireless network configuration, not WAN edge devices.
C (traffic inspection) relates to firewall or security policies handled by SRX’s UTM features, not templates.
D (monitoring and attack prevention) falls under Mist’s security or analytics capabilities, not the template function.
Therefore, the correct answer is B. To automatically generate configuration elements specific to device models.
Reference:
C Juniper Mist WAN Assurance and SD-WAN Configuration Guide
C Juniper Mist Cloud Device Template Management Documentation
C Juniper Mist AI-Driven SD-WAN Deployment Overview
정답:
Explanation:
The AI-driven Radio Resource Management (RRM) feature in Juniper Mist Wireless Assurance dynamically optimizes radio resource settings across all managed access points (APs) to ensure optimal wireless coverage, capacity, and performance.
According to the Juniper Mist Wireless Assurance and RRM Guide, RRM continuously analyzes live network telemetry, including metrics such as signal strength, interference, channel utilization, and client distribution, to make intelligent adjustments in real time.
It automatically optimizes parameters such as:
Channel selection (to minimize co-channel and adjacent-channel interference).
Transmit power levels (to balance coverage and minimize contention).
Channel width (to optimize throughput based on RF conditions).
The documentation specifies:
“AI-driven RRM in Mist Cloud continuously learns and adapts radio configurations based on environmental and client behavior patterns, improving network stability and overall user experience.”
Options A, C, and D are incorrect because:
Band steering is a specific feature handled separately within WLAN settings.
SSID naming conventions and user interfaces are administrative, not RRM-controlled.
Therefore, the correct answer is B. Radio resource settings.
Reference:
C Juniper Mist Wireless Assurance and AI-driven RRM Documentation
C Juniper Mist AI Cloud Operations Guide
C Juniper Mist Access Point Configuration and Optimization Guide