JN0-452 Free Practice Test

You need to correlate the coordinates of tracked devices and turn this information into usable data for other applications. Which real-time location service component accomplishes this task?

1. A. location system
2. B. BLE tag
3. C. triangulation service
4. D. location sensor

Correct Answer: A

You want to verify that DHCP is working as expected on a WLAN that currently has no clients. In this scenario, which Marvis feature would you use to accomplish this task?

1. A. Marvis Virtual Network Assistant
2. B. Marvis Minis
3. C. Marvis Query Language
4. D. Marvis Actions

Correct Answer: B
In a traditional wireless environment, verifying the functionality of network services like DHCP, DNS, or captive portals requires a physical presence at the site or an active client to report telemetry. However, theMarvis Minisfeature within the Juniper Mist AI ecosystem is specifically designed to solve the problem of "empty site" verification. Marvis Minis act asDigital Twins—virtualized client agents that reside directly on the Mist Access Points (APs).
Because they are integrated into the AP firmware, Marvis Minis can simulate client behavior without requiring any actual user devices to be connected to the WLAN. When an administrator wants to verify that DHCP is working on a specific SSID, Marvis Minis perform automated "synthetic testing." The virtual client will attempt to associate with the WLAN, complete the 802.11 authentication/association process, and then request an IP address via DHCP. If the DHCP server is unreachable, the pool is exhausted, or the response is too slow, Marvis Minis will detect this failure and report it to the Mist Cloud.
This proactive validation is part of Mist??s "Always-On" network testing strategy. WhileMarvis Actions (D)would eventually report a DHCP failure once real clients started failing, andMarvis Query Language (C)could be used to search for historical failures, onlyMarvis Minis (B)can actively test and verify the service in a scenario where there are currently no clients. This allows engineers to identify and fix "sleeping" issues—such as a misconfigured VLAN on a switch port or a downed DHCP server—before the first user even walks into the building, ensuring a "validated" network state at all times.

Referring to the exhibit, what does the security alert indicate?

1. A. An AP that is not part of the Mist Org is connected to the same wired network as theMist APs.
2. B. An AP that is not part of the Mist Org is launching a DDoS attack on the Mist APs.
3. C. An AP that is not part of the Mist Org is advertising the same SSIDs as the Mist APs.
4. D. An AP that is not part of the Mist Org is operating in the same RF channel as the nearby Mist AP.

Correct Answer: C

What is the impact of adding more SSIDs to a radio?

1. A. beacon overhead
2. B. less secure
3. C. less BSSIDs reserved for a mesh network
4. D. channel overlap

Correct Answer: A

Click the Exhibit button.

Referring to the exhibit, what is the meaning of the AI VALIDATED status update?

1. A. The issue was opened and is unresolved.
2. B. The issue was opened and Marvis confirms it has been closed.
3. C. The issue was opened and Marvis has closed it.
4. D. The issue was opened and closed manually.

Correct Answer: B
The AI VALIDATED status update means that the issue was opened and Marvis confirms it has been closed.
According to the Marvis Virtual Network Assistant Datasheet1, the AI-VALIDATED status update means that the issue was opened and Marvis confirms it has been closed. This status indicates that Marvis has verified that the issue is no longer present and the root cause has been resolved.
[References: https://www.juniper.net/us/en/products/cloud-services/marvis-virtual-network-assistant-datasheet.html, , ]