[2026年最新] 完璧JN0-253問題集問題と解答で一年無料最速更新
更新されたのは2026年リアルな無敵JN0-253問題集で100% 無料JN0-253試験問題集
質問 # 57
As an organization administrator, what are two ways to configure additional layers of security for administrator logins? (Choose two.)
- A. Disable a password policy.
- B. Enable a password policy.
- C. Enable two-factor authentication.
- D. Increase session timeouts.
正解：B、C
解説：
Enable Two-Factor Authentication (2FA): Adding 2FA to administrator logins significantly enhances security by requiring a second form of verification in addition to the password, making unauthorized access more difficult.
Enable a Password Policy: Implementing a strong password policy ensures that passwords meet certain complexity and length requirements, reducing the risk of brute force attacks.
質問 # 58
Which two features does a Marvis VNA subscription add to the support ticket creation experience? (Choose two.)
- A. AI-generated response
- B. in-context AI-assisted troubleshooting
- C. configuration assistance
- D. escalation
正解：A、B
解説：
In-context AI-assisted troubleshooting provides guidance directly within the ticket creation workflow to help identify and resolve issues.
AI-generated responses suggest potential solutions automatically based on historical data and Mist AI insights.
質問 # 59
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 site can contain multiple organizations.
- C. You must have one Juniper Mist superuser login for each site.
- D. One Juniper Mist organization can contain multiple sites.
正解：D
解説：
In Juniper Mist, an organization is the top-level container that manages policies, subscriptions, and users. Each organization can include multiple sites, allowing centralized management of networks across different locations.
質問 # 60
Which two statements are correct about Juniper Mist? (Choose two.)
- A. It manages third-party wireless devices using onsite controllers.
- B. It leverages a common cloud.
- C. It automatically pushes security policies to on-premises devices in real time to adapt to threats.
- D. It classifies event and performance data from network devices.
正解：B、D
解説：
Juniper Mist leverages a common cloud platform to manage wired, wireless, and WAN devices.
It collects and classifies event and performance data from network devices to provide AI-driven insights and analytics.
質問 # 61
Which protocol does Mist cloud use to send and receive data to connected access points?
- A. MQTT
- B. HTTPS
- C. PPTP
- D. SSH
正解：B
解説：
Mist Cloud Communication Protocol: The Mist cloud platform uses HTTPS (Hypertext Transfer Protocol Secure) to communicate with connected access points. This ensures that the data sent and received is encrypted and secure, adhering to modern security standards(Juniper Networks).
Security and Reliability: Using HTTPS provides a secure channel over which configuration changes, updates, and monitoring data can be safely transmitted between the Mist cloud and the access points. This protocol is widely accepted and trusted for secure communications over the internet.
質問 # 62
You want to change the default language for your Juniper Mist portal.
What will accomplish this task?
- A. Select your ranked language choice from the Alerts page.
- B. Input your primary language in the My Accounts page.
- C. Define your language using Organization templates.
- D. Use the Change Language drop-down list of the Juniper Mist portal.
正解：D
解説：
TheJuniper Mist Cloud portalprovides a user-friendly interface that supports multiple languages to enhance accessibility for global users. The language preference determines the display language for menus, dashboards, and configuration pages across the Mist UI.
According to theJuniper Mist Cloud Administration Guide, the portal's language can be modified as follows:
"Users can change the display language of the Mist portal using the Change Language drop-down list located in the upper-right corner of the interface." This option allows users to immediately switch the UI language without affecting other users in the organization or requiring administrative permissions. The change is applied per user profile and is stored for future sessions.
Other listed options are invalid:
* A:The Alerts page does not include language settings.
* B:The My Account page shows personal info but not display language options.
* C:Organization templates are unrelated to UI preferences.
Therefore, the correct answer isD. Use the Change Language drop-down list of the Juniper Mist portal.
References:- Juniper Mist Cloud Administration and User Interface Guide- Juniper Mist Cloud Portal User Preferences Documentation- Juniper Mist Cloud Fundamentals and Globalization Overview
質問 # 63
Which two wired elements would be configured using an organization-level template? (Choose two.)
- A. VLAN
- B. role
- C. DNS settings
- D. host name
正解：A、C
解説：
Two wired elements configured using an organization-level template in Juniper Mist are VLAN and DNS settings. Organization-level templates are designed to standardize and propagate common settings across all switches within an organization. As per official guides: "These templates can include VLANs and well-known services such as DNS (Domain Name System) that can be used across all devices within a site." VLAN and DNS settings are defined once at the organization (or switch group) template and automatically inherited by all devices, ensuring consistency. Host name and role are set at an individual switch level, not globally via templates.
Reference:Campus Fabric Configuration Example , Mist Wired Assurance Configuration Guide , Organization Template Reference
質問 # 64
Which two statements are correct after you request the subscription renewal using e-mail?
(Choose two.)
- A. Juniper Mist sends a welcome package with promotional materials.
- B. Juniper Mist sends a cancellation notice.
- C. Juniper Mist e-mails the support request for the selected subscriptions.
- D. Juniper Mist processes the order and sends an activation code.
正解：C、D
解説：
When you request a subscription renewal by e-mail, Juniper Mist creates and sends a support request for the selected subscriptions.
After processing, Juniper Mist sends an activation code to complete the renewal process.
質問 # 65
Which two statements describe SLEs? (Choose two.)
- A. SLEs use data science to troubleshoot network issues on an ad hoc basis.
- B. The metrics analyzed to meet specific SLE goals are categorized into classifiers.
- C. SLEs use machine learning to provide a proactive approach to understanding the end-user experience.
- D. SLEs display a detailed list of Wi-Fi clients who have connected to the network.
正解：B、C
解説：
InJuniper Mist AI,Service Level Expectations (SLEs)form the foundation ofWireless AssuranceandWired Assurance. They provide adata-driven, proactive methodto measure and maintain the quality of user experience, going beyond traditional device-centric monitoring.
According to theJuniper Mist AI Operations GuideandWireless Assurance Documentation, SLEs:
"Leverage machine learning and data science to deliver a proactive understanding of end-user experience and identify root causes of performance issues." Each SLE (such asTime to Connect,Roaming,Throughput,Coverage, andCapacity) is composed of classifiers, which break down performance metrics into measurable, root-cause categories. Examples include DHCP,DNS,Authentication, andSignal Qualityclassifiers.
This classifier-based structure enables Mist AI to automatically correlate problems and highlight the most probable cause of degradation-eliminating the need for manual troubleshooting or reactive analysis.
OptionsBandDare incorrect because SLEs arenot ad hoc toolsfor manual troubleshooting and donot simply list connected clients. Instead, they provide intelligent, AI-driven insights into user experience across the network.
Therefore, the correct statements are:
* A. SLEs use machine learning to provide a proactive approach to understanding the end-user experience.
* C. The metrics analyzed to meet specific SLE goals are categorized into classifiers.
References:- Juniper Mist Wireless Assurance and SLE Overview- Juniper Mist AI Operations and Analytics Guide- Juniper Mist Cloud Monitoring and SLE Classifier Documentation
質問 # 66
Which users have rights to invite new administrators to a Mist organization?
- A. super user only
- B. any user with an organization account
- C. network admin user only
- D. users with the "Invite Admin" permission
正解：A
質問 # 67
Using Juniper Mist, you want to claim multiple access points (APs) using a Web browser.
Where in the Juniper Mist Portal would you accomplish this task?
- A. Subscriptions
- B. Client Onboarding
- C. Devices
- D. Inventory
正解：D
解説：
In Juniper Mist, allhardware device onboarding and claiming operations-including access points (APs), switches, and gateways-are performed under theInventorysection of the Mist Cloud Portal.
According to the Juniper Mist Cloud documentation, theInventorypage serves as the centralized location for device lifecycle management. It allows administrators to:
* Claim new devicesusing their serial numbers or activation codes.
* Batch import multiple APsvia manual entry or CSV upload.
* Assign claimed devicesto specific sites for configuration and management.
* Monitor device claim status, model type, firmware version, and cloud connectivity state.
The documentation specifies:
"To onboard or claim multiple access points in the Mist Cloud, navigate toOrganization # Inventory, then clickClaim Devices. Enter or paste serial numbers of the APs you want to add, and assign them to the appropriate site." Other options are incorrect because:
* Subscriptionsmanages licensing and service entitlements.
* Devicesshows active device status per site but does not handle claiming.
* Client Onboardingis used for guest access or authentication workflows, not hardware management.
Therefore, the correct answer isInventory (C).
References:- Juniper Mist Cloud Administration Guide- Juniper Mist Access Point Onboarding and Inventory Management Documentation- Juniper Mist AI Configuration and Setup Guide
質問 # 68
How does Mist determine the location of clients in an indoor setting?
- A. trilateration
- B. probability surface
- C. GPS
- D. triangulation
正解：B
解説：
Mist builds location from "Probability Surfaces" not triangulation. The more directional RSSI beam information your client hears, the more data for the location engine to work with creating the probability surfaces, which provides the best possible location accuracy with sub second latency.
質問 # 69
Which two statements are correct about the Juniper Mist vBLE Asset Visibility mode? (Choose two.)
- A. The vBLE antenna tracks chirps from BLE tags.
- B. The vBLE antenna is in the receive mode.
- C. The vBLE antenna is in the transmit mode.
- D. The vBLE antenna communicates with mobile devices running the Juniper Mist location SDK.
正解：A、B
解説：
In Asset Visibility mode, the vBLE antenna listens for and tracks chirps from BLE tags attached to assets.
The vBLE antenna operates in receive mode in this mode, since it is not transmitting engagement signals but instead collecting data from BLE tags.
質問 # 70
Your company hosts its own enterprise-wide monitoring solution. You want to receive events from Juniper Mist. How would you accomplish this task?
- A. sending an e-mail
- B. using a webhook
- C. using the API
- D. using a WebSocket
正解：B
解説：
To integrate Juniper Mist events with an external monitoring solution, you configure a webhook, which allows Mist to push real-time event notifications directly to your system.
質問 # 71
What are two ways that Marvis Minis validates network configurations? (Choose two.)
- A. Marvis Minis uses supervised machine learning.
- B. Marvis Minis validates configurations automatically.
- C. Marvis Minis requires additional hardware for validation.
- D. Marvis Minis uses unsupervised machine learning.
正解：A、B
解説：
Marvis Minis validates network configurations automatically and uses supervised machine learning. As stated in the Juniper Mist AI documentation, "Marvis Minis runs validations automatically at regular intervals and can be triggered manually by administrators. Minis use network digital twin technology and supervised machine learning to simulate and validate real-world user connectivity events." The system automatically creates patterns, triggers tests, and correlates real user and simulated network behaviors with the learned models. The validation covers critical network services-such as DHCP, DNS, ARP, and application reachability-and does so across various scopes (site, AP, VLAN, and switch). There is no requirement for additional hardware, as the digital twin reuses existing network infrastructure and existing APs.
Reference:Marvis Minis Documentation - Marvis Minis Overview; Marvis Minis Configuration and Operation Manual
質問 # 72
Which two statements correctly describe the provisioning of greenfield and brownfield switches using the Mist UI? (Choose two.)
- A. Greenfield switches are provisioned using the Adopt Switches button.
- B. Greenfield switches are provisioned using the Claim Switches button.
- C. Brownfield switches are provisioned using the Adopt Switches button.
- D. Brownfield switches are provisioned using the Claim Switches button.
正解：B、C
解説：
Greenfield switches: These are new switches that have not been previously configured or managed. They are typically provisioned using the "Claim Switches" button, as they need to be initially claimed and added to the Mist environment. Brownfield switches: These are existing switches that have been configured and managed using a different system. They are typically provisioned using the "Adopt Switches" button, as they need to be adopted into the Mist environment while preserving their existing configuration.
質問 # 73
Which two functions are provided by the Juniper Mist REST API? (Choose two.)
- A. historic statistics monitoring
- B. event-driven monitoring
- C. Juniper Mist configuration
- D. real-time statistics monitoring
正解：A、C
解説：
The Juniper Mist REST API primarily provides functions for Juniper Mist configuration and historic statistics monitoring. According to the Juniper Mist documentation and API reference, the REST API allows users to automate configuration changes and retrieve historical data for analysis and reporting. Specifically,
"configuration" functions include creating, updating, and deleting sites, devices, SSIDs, VLANs, templates, and user roles through API calls. "Historic statistics monitoring" refers to the API's capability to pull time- series analytics on network and device performance, enabling users to query device usage, client events, SLE metrics, and application data over customizable timeframes.
Real-time statistics and event-driven monitoring are typically accessed via Mist's WebSocket API, not the REST API. The REST API focuses on configuration management and historical data extraction for audit and trend analysis, supporting full automation and integration with third-party tools.
Verification:
These answers match the selections marked in your image ("Juniper Mist configuration" and "historic statistics monitoring") and are verified per Juniper's API documentation and feature matrix.
References:
Juniper Mist API Introduction
Mist API Sample Class
Juniper Mist Automation Guide
RESTful API Overview | Mist
質問 # 74
What are two components of WiFi Management and Assurance? (Choose two.)
- A. Dynamic Packet Capture
- B. wayfinding
- C. Radio Resource Management
- D. Marvis Actions
正解：A、C
解説：
Radio Resource Management (RRM) optimizes wireless performance through AI-driven channel and power adjustments.
Dynamic Packet Capture provides automated traffic captures for troubleshooting and performance analysis within WiFi Management and Assurance.
質問 # 75
Which three statements about Juniper Mist cloud's microservices are correct? (Choose three.)
- A. They allow for Mist to be installed onsite or accessed from the cloud.
- B. They provide increased scalability.
- C. They provide agile feature updates and bug fixes.
- D. They allow for manual control of feature updates and bug fixes.
- E. They implement machine learning.
正解：B、C、E
質問 # 76
How often does Marvis Minis execute automatic validations?
- A. Every week
- B. Every hour
- C. Every 30 minutes
- D. Every day
正解：B
解説：
Marvis Miniscontinuously validates the health of network services by performing synthetic tests at predefined intervals without requiring user intervention. These tests simulate real client interactions - such as authentication, DHCP, DNS, and application reachability - to detect network issues proactively.
According to theJuniper Mist Marvis Minis Technical Overview, the feature performs:
"Automated validations every hour to ensure wireless, wired, and WAN network services are operating as expected." Each validation cycle allows the Minis agent (running on Mist Access Points) to verify connectivity and performance parameters across key stages of the client experience. If any issues are detected, they are automatically surfaced in theMarvis Actions dashboardfor further analysis.
While administrators can trigger additional manual tests,automatic validations occur every hourby default across all enabled sites.
Therefore, the correct answer isB. Every hour.
References:- Juniper Mist Marvis Minis Operations and Validation Guide
質問 # 77
You are troubleshooting a wireless client's issue and you suspect it is related to DHCP latency. In this scenario, which SLE should you review in the Mist UI?
- A. Capacity
- B. Throughput
- C. Coverage
- D. Time to Connect
正解：D
解説：
Identify the Problem: Suspected issue related to DHCP latency while troubleshooting a wireless client.
Understanding SLEs:
Capacity: Related to the number of clients and bandwidth. Time to Connect: Measures the time taken for clients to connect, including DHCP latency.
Throughput: Measures the data transfer rate.
Coverage: Measures the signal strength and coverage area.
Selecting the Appropriate SLE:
Time to Connect is the relevant SLE as it includes metrics on DHCP latency, which affects the connection time.
Review the SLE:
Analyze the Time to Connect SLE to identify any latency issues with DHCP.
質問 # 78
What are two components of WiFi Management and Assurance? (Choose two.)
- A. Dynamic Packet Capture
- B. wayfinding
- C. Radio Resource Management
- D. Marvis Actions
正解：A、C
解説：
Dynamic Packet Capture and Radio Resource Management (RRM) are two key components of WiFi Management and Assurance in Juniper Mist. According to official documentation: "Dynamic packet capture allows capturing wireless packets between clients and an access point to diagnose root-cause wireless issues.
For example, when a major issue is detected, such as an authorization failure, packet captures facilitate quick troubleshooting and root-cause analysis." RRM, driven by Mist's AI, proactively analyzes network conditions and client experiences to automatically adjust channel and power settings for optimal performance: "AI- driven RRM uses data science and cumulative SLE performance to learn and optimize radio settings, helping RF planning to continue to improve and adapt in the changing environments..." Marvis Actions is an AI-powered troubleshooting feature, but it is a separate component enabled by the Marvis subscription, not by base WiFi Management and Assurance. Wayfinding is part of the vBLE Engagement or location services.
Reference:Juniper Mist Wi-Fi Assurance | UK&I , Mist Management Guide , Platform Wi-Fi Assurance - NetworkScreen.com
質問 # 79
According to Juniper Networks, what are two best practices for AP placement (excluding AP12) for optimal accuracy and stability of location-based services? (Choose two.)
- A. Enable a wireless mesh.
- B. Mount the AP on the ceiling with the LED facing the floor.
- C. Mount the AP above the ceiling, the LED orientation does not matter.
- D. Each AP should have an unobstructed fine of sight to at least two other APs.
正解：B、D
解説：
Line of Sight: For optimal accuracy and stability of location-based services, each access point (AP) should have an unobstructed line of sight to at least two other APs. This ensures robust triangulation and accurate location tracking.
Ceiling Mounting: Mounting APs on the ceiling with the LED facing the floor is recommended.
This position provides the best coverage and performance for both Wi-Fi and BLE signals, essential for reliable location services.
質問 # 80
What happens to the captured data after a packet capture is stopped or completed?
- A. It is saved as a downloadable capture file for offline inspection.
- B. It remains permanently in the cloud for continuous analysis.
- C. It triggers alerts based on detected issues within the captured traffic.
- D. It is automatically discarded due to limited storage space.
正解：A
解説：
After a packet capture is stopped or completed in Juniper Mist, the data is saved as a downloadable file (PCAP), allowing administrators to analyze the traffic offline using tools like Wireshark.
質問 # 81
Which device detects a Layer 1 bad cable action within Marvis Actions?
- A. access point
- B. Mist Edge
- C. wireless client
- D. wired client
正解：B
解説：
The Mist Edge device is responsible for detecting Layer 1 issues, such as bad cable actions, within the Marvis Actions framework.
Mist Edge integrates with Marvis AI to provide detailed insights into network health, including physical layer issues like faulty cables, which can impact network performance. By identifying and alerting administrators to these problems, Mist Edge helps maintain the integrity and reliability of the network infrastructure.
質問 # 82
......
Juniper JN0-253 認定試験の出題範囲：
| トピック | 出題範囲 |
|---|---|
| トピック 1 |
|
| トピック 2 |
|
| トピック 3 |
|
| トピック 4 |
|
JN0-253問題集PDFとテストエンジン試験問題：https://www.goshiken.com/Juniper/JN0-253-mondaishu.html
Get2026年最新の無料更新されたJuniper JN0-253試験問題と解答：https://drive.google.com/open?id=1NtQ6hNuO4W_yE6R13aGaqBu9uPqYRpEu