[2025年04月] 厳密検証されたJN0-252問題集と解答でJN0-252問題集と正解付き
ベストJNCIA-MistAI学習ガイドはJN0-252試験合格させます
Juniper JN0-252 認定試験の出題範囲：
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質問 # 31
Which unit of measurement Is used for capacity, coverage, and throughput SLEs?
- A. signal strength in dBm
- B. throughput In Mbps
- C. percentage of channel utilization
- D. percentage of user minutes
正解：B
解説：
For capacity, coverage, and throughput Service Level Expectations (SLEs) in Mist AI, throughput is measured in Mbps. This unit measures the rate at which data is successfully delivered over the wireless network, providing a clear indication of network performance and user experience. Mist AI tracks these metrics to ensure the network meets the required performance standards.
Reference:
Wireless Throughput SLE
Service Level Expectations (SLE)
質問 # 32
Which two statements are correct about creating Mist sites? (Choose two.)
- A. A Mist site can only belong to a single organization.
- B. A Mist site can belong to multiple organizations.
- C. You can create and manage multiple sites with a Mist account.
- D. You can only create and manage a single site with a Mist account.
正解：A、C
質問 # 33
What is the maximum number of nodes supported in a Mist Edge high availability cluster?
- A. unlimited nodes
- B. three nodes
- C. ten nodes
- D. two nodes
正解：B
解説：
* The maximum number of nodes supported in a Mist Edge high availability cluster is three.
* This configuration ensures high availability and redundancy, providing resilience and reliability for network operations.
* By having three nodes, the cluster can continue to operate effectively even if one node fails, ensuring minimal disruption.
* Reference: Juniper Networks documentation on Mist Edge high availability cluster configurations.
質問 # 34
Which location-based service does User Engagement provide?
- A. Wi-Fi presence analytics
- B. asset tracking
- C. ultra wide band location
- D. wayfinding
正解：D
解説：
Wayfinding: User Engagement in Mist AI includes wayfinding services that help users navigate through complex environments such as large buildings or campuses. This feature uses real-time location data to guide users to their destinations.
Implementation: Wayfinding leverages Mist's BLE (Bluetooth Low Energy) technology and virtual beacons to provide precise indoor navigation and enhance the user experience.
Reference:
Juniper Networks Documentation
質問 # 35
Which protocol does the REST API use?
- A. syslog
- B. SSL
- C. SNMP
- D. HTTP
正解：D
解説：
Reference: https://www.juniper.net/documentation/us/en/software/junos/rest- api/topics/concept/rest-api-overview.html
質問 # 36
The Mist UI, which part of the system platform provides Information about missing VLANs?
- A. Switch Insights
- B. Marvis Actions
- C. Events
- D. Service-Level Exceptions
正解：B
解説：
System Platform Components in Mist UI:
Different components provide various insights and information about the network.
Component Descriptions:
Switch Insights: Provides detailed information about switch performance and status.
Events: Logs and displays events occurring in the network but does not specifically highlight missing VLANs.
Marvis Actions: AI-driven insights and recommendations that include identifying and suggesting actions for missing VLANs.
Service-Level Exceptions (SLEs): Monitor and report on performance metrics, not specifically focused on VLAN issues.
Conclusion:
The correct answer is C (Marvis Actions).
Reference:
Mist Documentation on System Platform Components: Mist Documentation
質問 # 37
What are two requirements for a WebSocket call? (Choose two.)
- A. authentication token
- B. WebSocket connection URL
- C. WebSocket configuration
- D. encryption token
正解：A、B
質問 # 38
Which two statements correctly describe Mist claim codes and activation codes? (Choose Two.)
- A. Activation codes may be used to claim multiple APs at once.
- B. Claim codes may be used to claim only one AP.
- C. An activation code is primed on a slicker on the AP.
- D. Claim codes may be used to claim multiple APs at once.
正解：A、B
解説：
Claim Codes: Claim codes are unique to each AP and can be used to claim only one AP at a time. This ensures each device is correctly registered and managed individually within the Mist system.
Activation Codes: Activation codes can be used to claim multiple APs at once, facilitating bulk onboarding and simplifying the setup process for large deployments.
Reference:
Juniper Mist Claim and Activation Codes
Mist Setup Guide
質問 # 39
Which statement is correct about Wi-Fi location-based services (LBS)?
- A. Wi-Fi LBS does not require a subscription.
- B. Wi-Fi LBS requires the Wireless Assurance subscription.
- C. Wi-Fi LBS needs the User Engagement subscription.
- D. Wi-Fi LBS requires a Wired Assurance subscription.
正解：C
解説：
Wi-Fi Location-Based Services (LBS) provided by Mist require the User Engagement subscription. This subscription includes features that enhance user interactions and engagement, such as location services, which are critical for delivering personalized and location-aware experiences. By leveraging Wi-Fi LBS with the User Engagement subscription, organizations can offer advanced services like wayfinding, asset tracking, and location analytics.
質問 # 40
Which two statements correctly describe the encryption of traffic using Mist? (Choose two.)
- A. By default, the communication between a Wi-Fi client and an AP is not encrypted.
- B. By default, the communication between an AP and a RADIUS server is encrypted.
- C. By default, the communication between an AP and a RADIUS server is not encrypted.
- D. By default, the communication between a Wi-Fi client and an AP is encrypted.
正解：B、D
解説：
Communication between an AP and a RADIUS server: Mist uses Transport Layer Security (TLS) to encrypt communication between APs and RADIUS servers by default. This helps protect sensitive authentication and authorization information.
Communication between a Wi-Fi client and an AP: Mist supports various encryption protocols, including WPA2-Enterprise and WPA3-Enterprise, which are used to encrypt data transmitted between Wi-Fi clients and APs. These protocols are enabled by default to ensure secure communication.
質問 # 41
Which two statements correctly describe Mist single sign-on (SSO)? (Choose two.)
- A. Mist administrative logins cannot use SSO.
- B. Guest user access can use SSO.
- C. Guest user access cannot use SSO.
- D. Mist administrative logins can use SSO.
正解：C、D
解説：
Mist Administrative Logins: Mist administrative logins can utilize Single Sign-On (SSO), allowing administrators to log in using their corporate credentials, enhancing security and ease of access.
Guest User Access: Guest user access cannot use SSO, as SSO is intended for internal users and administrators rather than external guest users who access the network.
質問 # 42
A user has reported a network outage. After locating the user, you find that the switch interface facing the user is down but there is no alert in the Mist UI. You want to ensure that in the future, you receive an alert when a switch interface is down. You have already verified that the Critical Switch Port Down alarm is configured and enabled on the Alerts Configuration page.
In this scenario, which action in the Mist UI will satisfy the requirement?
- A. Navigate to the switch in the Mist UI and modify the Port Configuration to enable the Up/Down Port Alerts setting for the interface.
- B. Navigate to the switch in the Mist UI and modify the Port Profile configuration to enable Persistent (Sticky) MAC Learning for the Port Profile.
- C. Enable the Critical Switch Port Up alarm on the Alerts Configuration page.
- D. Disable the Critical Switch Port Down alarm on the Alerts Configuration page.
正解：A
解説：
To ensure that you receive alerts when a switch interface goes down, you need to enable the Up/Down Port Alerts setting for the specific interface. This setting can be configured by navigating to the switch within the Mist UI and modifying the port configuration. Enabling this setting ensures that any changes in the port status, such as going down, will trigger an alert.
This is critical for proactive network monitoring and to promptly address any connectivity issues.
質問 # 43
Which administrator role must you have to view audit logs?
- A. Network Admin
- B. Super User
- C. Installer
- D. Observer
正解：A
質問 # 44
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. Mount the AP on the ceiling with the LED facing the floor.
- B. Enable a wireless mesh.
- C. Mount the AP above the ceiling, the LED orientation does not matter.
- D. Each AP should have an unobstructed line of sight to at least two other APs.
正解：A、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.
Reference:
Juniper Mist Deployment Guide
Best Practices for AP Placement
Top of Form
Bottom of Form
質問 # 45
Which statement describes Marvis Actions?
- A. It is a dashboard that lists the actions taken by wireless users.
- B. It Is a dashboard that highlights actionable items.
- C. It is a dashboard that describes user actions.
- D. It is a dashboard that details actions taken by the Marvis Al.
正解：B
解説：
* Marvis Actions is a component of the Mist AI platform that provides a dashboard highlighting actionable items. This dashboard is designed to offer insights and recommendations based on the analysis performed by Marvis AI.
* The focus of Marvis Actions is to present users with clear, actionable steps that can improve network performance, resolve issues, and enhance the overall user experience.
* By consolidating relevant information and suggested actions, Marvis Actions helps network administrators efficiently address network challenges and optimize operations.
* Reference: Juniper Networks documentation on Marvis Actions and its role within the Mist AI ecosystem.
質問 # 46
The only protocol used by your network is TCP/IP, despite the fact that workstations in the organization do not have access to the Internet.
A user has been accessing files on server on your network and now wants to connect to a Web server that is used as part of the company's intranet. The user enters the URL of the Website into Internet Explorer.
Which of the following servers will be used to provide information needed to connect to the Web server?
- A. DHCP server
- B. WINS server
- C. DNS server
- D. File server
正解：C
質問 # 47
Which Mist API is event driven?
- A. RESTful
- B. Python
- C. FTP
- D. Webhook
正解：D
解説：
Event-Driven API: Webhooks are used as an event-driven API in Mist. They allow the system to send real-time notifications to external systems when specific events occur, enabling immediate actions or alerts.
質問 # 48
Which two APIs are supported by Mist? (Choose two.)
- A. SOAP
- B. gRPC
- C. REST
- D. Webhook
正解：C、D
質問 # 49
Referring to the exhibit, which two statements are correct? (Choose two.)
- A. To stay logged in, you will need to perform an action in Mist every 10 minutes regardless of which organization you are viewing.
- B. You will need to log in to Mist every 60 minutes regardless of which organization you are viewing.
- C. You will need to log in to Mist every 60 minutes as long as you are viewing this organization.
- D. To stay logged in, you will need to perform an action in Mist every 10 minutes as long as you are viewing this organization.
正解：C、D
解説：
Identify the Statements:
Login frequency and actions needed to stay logged in.
Login Policies:
Users need to log in to Mist every 60 minutes if viewing a specific organization. To stay logged in, users need to perform an action every 10 minutes within the organization.
Correct Statements:
You will need to log in to Mist every 60 minutes as long as you are viewing this organization. To stay logged in, you will need to perform an action in Mist every 10 minutes as long as you are viewing this organization.
質問 # 50
What happens when Mist subscriptions expire?
- A. Devices retain their configurations but Mist management GUI functionality related to expired subscriptions are not configurable by the user.
- B. Devices retain their configurations for 90 days; if the subscriptions are not renewed, the configuration is deleted and the devices are reset to factory default.
- C. Devices retain their configurations and all Mist management GUI functionality remains available to the user.
- D. Devices retain their configurations but the Mist user is prevented from accessing the Mist management GUI.
正解：A
質問 # 51
Which two statements correctly describe Mist organizations and sites? (Choose two.)
- A. An organization is contained within a site.
- B. Multiple sites may be contained within a single organization.
- C. Multiple organizations may be contained within a single site.
- D. A site is contained within an organization.
正解：B、D
解説：
In the Mist architecture, an organization is a higher-level entity that can contain multiple sites.
A site is contained within an organization: Each site operates under the umbrella of an organization, allowing centralized management and policy enforcement.
Multiple sites may be contained within a single organization: This structure enables organizations to manage and monitor different geographical locations or different business units within a single centralized framework.
This hierarchical structure facilitates scalable and organized network management.
質問 # 52
What are two requirements for a WebSocket call? (Choose two.)
- A. WebSocket connection URL
- B. WebSocket configuration
- C. encryption token
- D. authentication token
正解：A、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) (CertEnsure).
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.
Incorrect Options:
MQTT: While MQTT is a lightweight messaging protocol often used in IoT, it is not the protocol used by Mist cloud for AP communication.
SSH: Secure Shell (SSH) is primarily used for secure remote command-line access and not for the primary communication between Mist cloud and APs.
PPTP: Point-to-Point Tunneling Protocol (PPTP) is used for implementing VPNs and is not relevant to the communication between Mist cloud and access points.
Reference:
Juniper Networks Documentation: Mist Cloud Communication
質問 # 53
Which language is used to execute Marvis queries in the Mist UI?
- A. C++
- B. Python
- C. Natural Language
- D. Structured Query Language (SQL)
正解：C
解説：
Understanding Marvis Queries:
Marvis is the AI-driven virtual network assistant in Mist that helps with queries and troubleshooting.
Language Used for Queries:
Natural Language: Marvis is designed to understand and respond to natural language queries, making it user-friendly.
Python, C++, SQL: These are programming and query languages not used directly for Marvis queries.
質問 # 54
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