JN0-252 PDF問題集で2025年03月13日最近更新された問題
JN0-252試験問題有効なJN0-252問題集PDF
Juniper JN0-252 認定試験の出題範囲：
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質問 # 45
Which two Wi-Fi related SLEs are visible in the Mist UI? (Choose two.)
- A. Application Health
- B. Capacity
- C. Throughput
- D. Switch Health
正解：B、C
解説：
Wi-Fi Related SLEs in Mist UI:
SLEs (Service Level Expectations) help monitor and ensure Wi-Fi network performance.
Visible SLEs:
Capacity:
B: Capacity SLE monitors the network's ability to handle the number of connected clients and their bandwidth requirements.
Throughput:
D: Throughput SLE measures the data transfer rates, ensuring that the network meets the expected performance levels.
Other Options:
Switch Health: Relates to wired network performance, not Wi-Fi.
Application Health: Generally focuses on application performance, not specifically Wi-Fi.
Conclusion:
The correct answers are B and D.
Reference:
Mist Documentation on Wi-Fi SLEs: Mist Documentation
質問 # 46
You have five clients on the network and 20 minutes of statistics for each client.
In this scenario, how many user minutes does this equal?
- A. 0
- B. 1
- C. 2
- D. 3
正解：D
解説：
Identify the Scenario: Five clients on the network and 20 minutes of statistics for each client.
Calculation:
User Minutes = 100.
Conclusion:
The total user minutes in this scenario is 100.
質問 # 47
Which two statements correctly describe Mist organizations and sites? (Choose two.)
- A. Multiple organizations may be contained within a single site.
- B. Multiple sites may be contained within a single organization.
- C. A site is contained within an organization.
- D. An organization is contained within a site.
正解：B、C
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 # 48
Which statement is true about unsupervised AI learning?
- A. It is used to analyze and classify labeled datasets.
- B. A human must label the dataset before the AI can be trained on it.
- C. A human labels the dataset after the AI trains on it.
- D. It is used to analyze and classify unlabeled datasets.
正解：D
質問 # 49
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 # 50
An AP is connected to your wired network but is not claimed to your organization.
Which type of AP would be a possible security threat in this scenario?
- A. honeypot AP
- B. rogue AP
- C. spoofed AP
- D. neighbor AP
正解：B
解説：
Types of APs and Security Threats:
Understanding different types of access points and their potential security threats.
Access Point Types:
Neighbor AP: An access point that belongs to a neighboring network and is not necessarily a security threat.
Rogue AP: An unauthorized access point connected to the wired network, posing a significant security threat.
Spoofed AP: An access point that mimics a legitimate one, but typically does not involve being connected to the network.
Honeypot AP: An access point set up to lure attackers, not necessarily a threat unless used maliciously.
Identifying the Threat:
An AP connected to your wired network but not claimed to your organization is considered a rogue AP and poses a security threat.
質問 # 51
Which three components are used to deploy location-based services? (Choose three.)
- A. location sensors
- B. compact flash
- C. SFP
- D. location engine
- E. BLE tags
正解：A、D、E
解説：
To deploy location-based services in Mist, the following components are used:
Location Sensors: These devices capture the location data from BLE tags and other devices.
BLE Tags: These are small devices that emit Bluetooth signals to be picked up by location sensors.
Location Engine: This software processes the data from the sensors and tags to determine precise locations and provide analytics.
質問 # 52
Which machine learning method involves rewarding and punishing an agent?
- A. unsupervised learning
- B. deep learning
- C. reinforcement learning
- D. supervised learning
正解：C
質問 # 53
Which two statements are true about packet captures on an AP? (Choose two.)
- A. Only wireless packets can be captured.
- B. The involved APs remain in service.
- C. Wireless and wired packets can be captured.
- D. The involved APs are taken out of service.
正解：B、C
解説：
* Mist APs have the capability to capture both wireless and wired packets. This feature allows for comprehensive network troubleshooting by providing visibility into both types of traffic.
* When performing packet captures on Mist APs, the APs remain in service. This means they continue to operate and serve clients while the capture is ongoing, ensuring minimal disruption to network operations.
* This functionality is critical for maintaining network availability and performance while conducting detailed packet analysis.
* Reference: Juniper Networks documentation on Mist AI AP packet capture features.
質問 # 54
A user called a help desk to report a Wi-Fi issue.
In this scenario, what information must be provided for Marvis to troubleshoot the issue? (Choose two.)
- A. the time of the incident
- B. the access point to which the client was connected
- C. the MAC address of the client device
- D. user home address
正解：A、C
質問 # 55
Which two statements correctly describe Mist claim codes and activation codes? (Choose two.)
- A. Claim codes may be used to claim multiple APs at once.
- B. Activation codes may be used to claim multiple APs at once.
- C. An activation code is printed on a sticker on the AP.
- D. Claim codes may be used to claim only one AP.
正解：B、D
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.
質問 # 56
What are two requirements to use the Wired Visibility option of Juniper Mist Wireless Assurance? (Choose two.)
- A. A cloud-ready switch must be deployed in the network.
- B. The SNMP protocol must be configured on the switch.
- C. A Mist AP must be deployed in the network.
- D. The LLDP protocol must be configured on the switch.
正解：A、B
質問 # 57
What are asked to create a label that will be applied to a WLAN template.
This scenario, under which level should you create the label?
- A. clients
- B. site
- C. organization
- D. WLAN
正解：B
解説：
When creating a label to be applied to a WLAN template in Mist AI, you should create the label at the site level. This is because WLAN templates are designed to be associated with specific sites or site groups, allowing you to customize WLAN configurations per site. Creating labels at the site level ensures that these configurations are applied appropriately within the desired site context.
Reference:
Mist AI Documentation
Juniper Networks Site Groups
質問 # 58
What are two requirements for a WebSocket call? (Choose two.)
- A. WebSocket configuration
- B. WebSocket connection URL
- 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 # 59
Which two statements are true about Juniper Mist Wireless Assurance Radio Resource Management (RRM)? (Choose two.)
- A. RRM builds me channel plan based on a real-time assessment of the network.
- B. RRM tuning happens automatically.
- C. RRM builds the channel plan based on the physical distance between the APs.
- D. RRM tuning Is a manual process that you must Initiate every day.
正解：A、B
解説：
Real-time Assessment: Juniper Mist's Radio Resource Management (RRM) builds the channel plan based on real-time network assessments. It dynamically adjusts to changing conditions in the RF environment, ensuring optimal performance by continuously monitoring factors such as interference, client distribution, and usage patterns.
Automatic Tuning: RRM tuning happens automatically. Mist AI leverages reinforcement learning to continually optimize RF settings without manual intervention, adjusting channels, power levels, and other parameters in real-time to maintain optimal network performance.
Reference:
Understanding Radio Resource Management | Juniper Networks
Radio Management | Mist | Juniper Networks
質問 # 60
default, how long does an Installer role have access to a site tor Initial configuration before expiration?
- A. 24 hours
- B. unlimited
- C. 7 days
- D. 48 hours
正解：C
解説：
Installer Role in Mist:
The Installer role is designed for initial site setup and configuration.
Access Duration:
By default, the Installer role has temporary access for a specific duration to ensure security and control.
Default Access Duration:
7 days: Installers typically have access to a site for 7 days, enough time to complete initial setup and configuration before access expiration.
Conclusion:
The correct answer is A.
Reference:
Mist Documentation on Role-Based Access: Mist Documentation
質問 # 61
What is a feature within Mist AI that uses unsupervised machine learning?
- A. Service Level Expectations
- B. vBLE engagement
- C. Alerting
- D. Insights
正解：A
質問 # 62
Which SLE reports RF interference?
- A. Coverage
- B. Capacity
- C. AP Health
- D. Roaming
正解：A
解説：
* In Mist's Service Level Expectations (SLE) framework, the Coverage SLE is responsible for reporting on RF interference.
* The Coverage SLE monitors the strength and quality of the wireless signal, ensuring that clients are receiving adequate coverage throughout the network. It also identifies areas where RF interference might be degrading the signal quality.
* By tracking RF interference, the Coverage SLE helps administrators diagnose and mitigate issues that could impact wireless performance and user experience.
* Reference: Juniper Networks documentation on Mist SLEs and their specific metrics.
質問 # 63
By default, which statement is correct regarding the upstream interfaces configuration on a Mixtape?
- A. The interface is configured as a trunk port and accepts only tagged traffic.
- B. The Interface is configured to send untagged traffic.
- C. The interface is configured to use VLAN 10.
- D. The Interface is configured to use VLAN 11.
正解：A
質問 # 64
Which two statements about WLAN templates are correct? (Choose two.)
- A. They can be deployed to a certain site.
- B. They can be deployed to a certain switch.
- C. They can be deployed to a policy.
- D. They can be deployed to the whole organization.
正解：A、D
解説：
WLAN Templates Overview: WLAN templates in Mist AI are used to standardize and manage wireless configurations across multiple locations and devices. They help in maintaining consistent wireless settings and policies throughout the network.
Deployment to the Whole Organization: WLAN templates can indeed be deployed at the organization level. This allows the configurations defined in the template to be applied across all sites and access points within the organization. This approach simplifies the management and ensures uniformity across the network (Juniper Networks) (CertEnsure).
Deployment to a Certain Site: WLAN templates can also be applied to specific sites. This is useful for organizations with multiple sites having unique wireless requirements. By applying templates at the site level, administrators can tailor configurations to meet local needs while still maintaining control through central management (CertEnsure).
Incorrect Options:
Deployed to a Switch: WLAN templates are not deployed to individual switches. They are specific to wireless configurations and thus pertain to access points and wireless settings.
Deployed to a Policy: While policies can be part of WLAN configurations, templates themselves are not deployed directly to policies. Policies are typically components within the templates.
Reference:
Juniper Networks Documentation: WLAN Templates
質問 # 65
The Mist UI, which part of the system platform provides Information about missing VLANs?
- A. Switch Insights
- B. Events
- C. Marvis Actions
- D. Service-Level Exceptions
正解：C
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 # 66
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. Brownfield switches are provisioned using the Adopt Switches button.
- C. Greenfield switches are provisioned using the Claim 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 # 67
Which device categories are included in WAN Assurance? (Choose two.)
- A. SRX
- B. EX
- C. Mist Edge
- D. SSR
正解：A、D
解説：
Reference: https://www.juniper.net/us/en/products/cloud-services/juniper-mist-wan-assurance- overview-datasheet.html
質問 # 68
Which two statements correctly describe Mist single sign-on (SSO)? (Choose two.)
- A. Guest user access cannot use SSO.
- B. Mist administrative logins can use SSO.
- C. Mist administrative logins cannot use SSO.
- D. Guest user access can use SSO.
正解：A、B
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.
Reference:
Mist SSO Configuration Guide
SSO Integration Overview
質問 # 69
You are asked to configure Mist lo send e-mail alerts lo your organization administrators, who all have mailboxes that reside on the same e-mail server. Alerts are being generated and are visible in the Mist GUI. but only some administrators are receiving the alert emails.
What Is the problem in this scenario?
- A. The affected administrators have not enabled e-mail notifications in their Mist My Account settings.
- B. The organization does not have sufficient alert subscriptions.
- C. The user e-mail addresses are not correctly formatted.
- D. Your e-mail server is blocking e-mail from Mist.
正解：A
解説：
Identify the Problem: Alerts are being generated and visible in the Mist GUI, but only some administrators receive the alert emails.
Possible Issues:
User email addresses not correctly formatted.
Email server blocking Mist emails.
Insufficient alert subscriptions.
Administrators not enabling email notifications.
Root Cause:
Since some administrators receive the alerts, email formatting and server blocking issues can be ruled out.
If alert subscriptions were insufficient, no administrators would receive the alerts.
The most likely cause is that the affected administrators have not enabled email notifications in their Mist My Account settings.
Resolution:
Ensure that all administrators have enabled email notifications in their Mist My Account settings.
Reference:
Mist Documentation on Notifications: Mist Documentation
質問 # 70
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