Free JN0-452 Exam Dumps

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?

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.

Exhibit:

Referring to the exhibit, which client has the weakest connection to the WLAN?

Correct Answer:D

You discover that some clients do not use all channels in the 5 GHz UNII-2 Extended frequency band and you have made the appropriate adjustments in the RF template. How do you implement these changes?

Correct Answer:A

You are asked to deploy a new Juniper Mist Edge VM for your customer.

Referring to the exhibit, which three interfaces are required to accomplish this task? (Choose three.)

Correct Answer:ABD
When deploying aJuniper Mist Edge VM(Virtual Machine), the networking architecture is designed to separate different types of traffic to ensure security, scalability, and efficient data handling. Unlike a traditional hardware controller that might use a single trunk port for all traffic, a Mist Edge VM specifically utilizes three primary logical interfaces to function within a data center environment.
TheOut-of-Band (OOB)interface (A) is used exclusively for management and control plane traffic. This interface is what connects the Mist Edge to theMist Cloudvia an encrypted tunnel. It is through this port that the Mist Edge receives configuration updates, reports telemetry data to the AI engine, and allows administrators to monitor the health of the VM. By keeping this traffic out-of-band, Juniper ensures that management tasks do not compete with user data throughput.
TheUpstreaminterface (D) is the "northbound" connection. Its primary role is to connect the Mist Edge to the core network or the internet for user data egress. When client traffic is tunneled from the Access Points (APs) to the Mist Edge, the Upstream interface is where that traffic is de-encapsulated and forwarded to the local network resources or the internet gateway. This interface typically connects to a core switch or a DMZ.
TheDownstreaminterface (B) is the "southbound" connection. This is the entry point for theL2TPv3 or Mist Tunneltraffic coming from the Access Points. The APs establish a secure tunnel to this specific interface to transport user data across the Layer 3 network. This separation allows for granular firewall policies and ensures that the tunnel termination point is distinct from the management plane. While the term "Revenue" (E) is often used in carrier-grade routing to describe data-carrying ports, Mist documentation specifically uses the terms Upstream and Downstream to define the data path.

Click the Exhibit button.
A user opened a ticket. Upon troubleshooting, you determine that frequent roaming is the root cause of the problem.
Referring to the exhibit, which statement describes the roaming issue that the client is experiencing?

Correct Answer:D