合格させるJuniper JN0-252にはFast2test提供の試験問題集で2025年04月更新
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質問 # 19
A Mist mesh network supports up to how many hops?
- A. 3 hops
- B. 4 hops
- C. 2 hops
- D. 1 hop
正解：B
質問 # 20
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. Coverage
- B. Capacity
- C. Throughput
- 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 # 21
Which two settings would you configure in a Mist radio frequency (RF) template? (Choose two.)
- A. data rates
- B. band steering setting
- C. transmit power
- D. channel width per Wi-Fi band
正解：C、D
質問 # 22
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 a Wi-Fi client and an AP is encrypted.
- C. By default, the communication between an AP and a RADIUS server is encrypted.
- D. By default, the communication between an AP and a RADIUS server is not encrypted.
正解：B、D
解説：
AP and RADIUS Server Communication: By default, the communication between an Access Point (AP) and a RADIUS server is not encrypted. This can be configured to be encrypted, but it is not the default setting.
Wi-Fi Client and AP Communication: By default, the communication between a Wi-Fi client and an AP is encrypted, typically using WPA2 or WPA3, which ensures the data exchanged over the wireless network is secure.
Reference:
Mist Wireless Security Documentation
RADIUS Configuration Guide
質問 # 23
You are inviting a new administrator into a Mist organization. In this scenario, which two roles are valid? (Choose two.)
- A. System Admin
- B. Standard
- C. Helpdesk
- D. Network Admin
正解：C、D
質問 # 24
How does Mist determine the location of clients in an Indoor setting?
- A. GPS
- B. probability surface
- C. triangulation
- D. trilateration
正解：D
解説：
* Understanding Location Determination in Mist:
Mist uses advanced methods to determine the location of clients in an indoor setting.
* Possible Methods:
Triangulation: Uses angles to determine position, but not typically used by Mist.
GPS: Not feasible indoors due to signal limitations.
Probability Surface: Involves calculating the probability of a client's location, but not the primary method used.
Trilateration: Uses the distance from multiple known points to determine the exact location.
* Mist's Method:
Mist primarily uses trilateration to determine the location of clients by measuring the distance from at least three access points.
質問 # 25
What are two benefits of Juniper Mist Wired Assurance? (Choose two.)
- A. Support for ZTP.
- B. It is the only way to configure Virtual Chassis settings for Juniper EX switches.
- C. Ability to deploy campus fabric architectures in minutes based on intent.
- D. Configuration settings for multi-gig access ports that are not available in the Junos CLI
正解：C
解説：
* Juniper Mist Wired Assurance provides several benefits aimed at simplifying network management and enhancing performance.
* B. Ability to deploy campus fabric architectures in minutes based on intent: Wired Assurance leverages automation and intent-based networking to quickly deploy and manage complex campus fabric architectures. This feature significantly reduces the time and effort required to set up and maintain such networks.
* C. Support for ZTP (Zero Touch Provisioning): Wired Assurance includes ZTP capabilities, which allow for the automatic provisioning and configuration of switches as soon as they are connected to the network. This reduces the need for manual intervention and speeds up the deployment process.
* These features are part of a broader suite of tools that Wired Assurance provides to streamline network operations, improve reliability, and enhance visibility into network performance.
* Reference: Juniper Networks documentation on Wired Assurance features and capabilities.
質問 # 26
Which Mist API is event driven?
- A. FTP
- B. Python
- C. RESTful
- 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 # 27
Which statement is correct when a subscription expires?
- A. The devices remain operational, but you are not allowed to manage the devices using the Mist management GUI.
- B. The devices remain operational, and all functionality remains available for a one-year grace period.
- C. The devices remain operational, but the Mist management GUI functionality related to expired subscriptions is hidden from the user.
- D. The devices become inactive and unreachable through the Mist management GUI.
正解：A
解説：
When a Mist subscription expires, the devices associated with that subscription continue to operate normally, ensuring there is no immediate disruption to network operations. However, management capabilities through the Mist management GUI are restricted. This means that while the devices remain functional, you cannot make configuration changes, monitor, or manage them using the Mist management interface until the subscription is renewed. This restriction emphasizes the importance of maintaining active subscriptions for full access to Mist's management features.
質問 # 28
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. Enable the Critical Switch Port Up alarm on the Alerts Configuration page.
- C. Disable the Critical Switch Port Down alarm on the Alerts Configuration page.
- D. Navigate to the switch in the Mist UI and modify the Port Profile configuration to enable Persistent (Sticky) MAC Learning for the Port Profile.
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 # 29
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 the whole organization.
- D. They can be deployed to a policy.
正解：A、C
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 # 30
Which two statements correctly describe Mist organizations and sites? (Choose wo.)
- A. A site is contained within an organization.
- B. Multiple organizations may be contained within a single site.
- C. An organization is contained within a site.
- D. Multiple sites may be contained within a single organization.
正解：A、D
解説：
* In the Mist architecture, an organization is a higher-level entity that can contain multiple sites.
* A. A site is contained within an organization: Each site operates under the umbrella of an organization, allowing centralized management and policy enforcement.
* B. 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.
* Reference: Juniper Networks documentation on organizational structure and site management in Mist.
質問 # 31
You want to review client information about a specific AP.
In this scenario, where in the UI would you look?
- A. AP Insights
- B. Client Insights
- C. SLEs
- D. Access Points
正解：A
質問 # 32
vBLE engagement works on transmit mode and has 1 m to 3 m accuracy using which feature?
- A. Wi-Fi IoT sensors
- B. the Mist location SDK
- C. Wi-Fi enabled devices
- D. a BLE radio
正解：D
解説：
Reference: https://www.juniper.net/us/en/products/cloud-services/user-engagement.html
質問 # 33
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. File server
- B. WINS server
- C. DNS server
- D. DHCP server
正解：C
質問 # 34
What is the maximum number of Mist Edge devices supported for high availability?
- A. A maximum of two Mist Edge devices are supported.
- B. A maximum of three Mist Edge devices are supported.
- C. An unlimited number of Mist Edge devices are supported.
- D. A maximum of 16 Mist Edge devices are supported.
正解：A
解説：
The maximum number of Mist Edge devices supported for high availability is two. This ensures that there is a backup device in place to take over in case the primary device fails, providing redundancy and maintaining network stability.
質問 # 35
Which SLE reports RF interference?
- A. Coverage
- B. AP Health
- C. Capacity
- D. Roaming
正解：B
解説：
AP Health is the SLE report that specifically focuses on the health of individual access points (APs) and can detect RF interference issues.
質問 # 36
By default, how long does an Installer role have access to a site for initial configuration before expiration?
- A. 24 hours
- B. unlimited
- C. 7 days
- D. 48 hours
正解：C
質問 # 37
Which protocol does Mist cloud use to send and receive data to connected access points?
- A. HTTPS
- B. PPTP
- C. SSH
- D. MQTT
正解：A
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 # 38
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