Free Juniper JN0-251 Exam Actual Questions

The questions for JN0-251 were last updated On Mar 30, 2025

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Question No. 1

You want to determine where you have coverage issues in your network using Marvis Actions.

Which Marvis Action category should you use in this situation?

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Correct Answer: D

You want to determine where you have coverage issues in your network using Marvis Actions. The Marvis Action category that you should use in this situation isAP. The AP category contains actions that are related to the access points on your network, such as offline APs, health check failed APs, non-compliant APs, and coverage hole APs.

The coverage hole AP action will detect any coverage issues on your site and provide a floorplan visual of the APs on your map experiencing these issues. You can use this visual to find the low coverage spaces identified on your site and make the necessary improvements. You can also view the details of the coverage hole action, such as the number of affected clients, the average RSSI, and the root cause classifier.

To access the AP category of Marvis Actions, you need to navigate to Marvis > Actions and select the AP tab. You will see a list of all the AP actions that are detected on your network. You can filter and sort the actions by various criteria, such as site, severity, status, or date. You can also perform actions on the APs, such as upgrade, RMA, or block.


Question No. 2

Referring to the exhibit, what do you determine about the site's Time to Connect SLE metric?

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Correct Answer: B

The correct answer is B. Eighty percent of the Time to Connect failures are related to DHCP failures. This is what you can determine about the site's Time to Connect SLE metric from the exhibit. The exhibit shows a root cause analysis chart that displays the Service Level Metrics and the Classifiers for the site. The Service Level Metrics section shows the percentage of time to connect, which is the time it takes for a client device to connect to the wireless network. The Classifiers section shows the percentage of authorization, association, internet services, and DHCP, which are the steps involved in the connection process. The blue line connects the two sections and shows the correlation between them.

The exhibit shows that the site has a Time to Connect SLE metric of 20%, which means that only 20% of the client devices were able to connect to the wireless network within the expected time. The exhibit also shows that 80% of the Time to Connect failures are related to DHCP failures, which means that 80% of the client devices were not able to obtain an IP address from the DHCP server. This indicates that there is a problem with the DHCP service or configuration at the site.


Question No. 3

Click the Exhibit button.

You notice a green LED emitted from your AP43.

Referring to the exhibit, what does this signal indicate?

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Correct Answer: B

According to the exhibit, which shows the AP status table for Mist APs, a green LED emitted from an AP indicates that the AP is configured correctly with no users connected to it. This means that the AP has successfully connected to the Mist cloud and received its configuration, but there are no wireless clients associated with it. A green LED is different from a blue LED, which indicates that the AP is configured correctly and at least one user is connected to it. A red LED indicates that the AP is not configured correctly and has an error. A yellow LED indicates that the AP is in recovery mode and needs to be reset. Therefore, based on the exhibit, a green LED emitted from your AP43 means that the AP is configured correctly with no users connected to it.


Question No. 4

You are inviting a new administrator into a Mist organization.

In this scenario, which two roles are valid? (Choose two.)

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Correct Answer: B, C

You are inviting a new administrator into a Mist organization. In this scenario, the two roles that are valid areObserverandInstaller. These are two of the predefined administrator roles that Mist offers for different levels of access and permissions. You can assign these roles to the new administrator when you invite them to join your organization.

The Observer role is a read-only role that allows the administrator to view and monitor the sites that they have access to. The Observer role can see the site-level features, such as monitor, clients, access points, location, analytics, and network. However, they cannot configure or modify any organization-level features or claim APs.

The Installer role is a minimal role that allows the administrator to perform the initial installation tasks for the sites that they have access to. The Installer role can claim APs, assign APs to sites, or place APs on maps. However, they cannot unclaim or remove APs from the organization. They also cannot access the native Admin UI and have to use the API or the Mist AI App.