JN0-452 Juniper Exam Questions and Free Practice Test

Question 19

Which Juniper AP is used to augment BLE coverage?

A. BT111

B. AP12

C. AP242

D. AP343

Correct Answer:A

Question 20

You have received a Marvis Actions Missing VLAN notification. In this scenario, where is the problem?

A. The gateway is missing the VLAN.

B. An access point is missing the VLAN.

C. A client is missing the VLAN.

D. A switch is missing the VLAN.

Correct Answer:B

Question 21

Exhibit:
JN0-452 dumps exhibit
Referring to the exhibit, which client has the weakest connection to the WLAN?

A. Client 2

B. Client 4

C. Client 3

D. Client 1

Correct Answer:D

Question 22

You have deployed location services at a site and have installed an application which includes the Mist SDK on Bluetooth-only mobile client devices. The devices with the SDK- enabled app have Bluetooth enabled, but the devices do not appear in the Mist GUI under Clients/App Clients.
What is causing this problem?

A. There is BLE and Wi-Fi co-channel interference.

B. The clients are connected to the wrong WLAN.

C. The AP BLE radios do not hear the SDK-enabled client??s BLE beacons.

D. The client devices are not connected to Wi-Fi or to a cellular data plan.

Correct Answer:C

Question 23

Which Wireless Assurance SLE provides information on whether a user is able to associate to the WLAN?

A. Successful Connect

B. Capacity

C. Roaming

D. Throughput

Correct Answer:A

Question 24

You are building your floor plan for a recent Juniper Mist deployment and you must ensure that when you are finished, you can track user movements and locations throughout the floor plan. In this scenario, which statement is correct regarding AP orientation in the Mist UI?

A. In the UI, the APs must all be oriented on the floor plan to face true north.

B. In the UI, the orientation of the APs will not affect Mist??s location services.

C. In the UI, the APs must be oriented on the floor plan in the same direction as thephysical APs.

D. In the UI, the APs must all be oriented on the floor plan to face geographical north.

Correct Answer:C
In a Juniper Mist AI deployment, achieving high-fidelity location accuracy is entirely dependent on the digital twin (the floor plan in the Mist UI) accurately reflecting the physical environment. While scaling the map is the foundation,AP orientationis the most critical variable for thevBLE (virtual Bluetooth Low Energy)engine to correctly calculate a client's position.
Mist Access Points, such as the AP43 or AP45, feature a patented16-element directional vBLE antenna array. This array does not broadcast in a simple omnidirectional circle; instead, it uses eight distinct directional beams to blanket an area. The Mist Cloud uses "probability surfaces" to determine a user's location by examining the RF fingerprints from these specific beams. If an AP is physically mounted with its LED pointing toward a specific hallway, but is oriented in the Mist UI facing a different direction, the location engine will receive signal data that does not match its internal map of the beams. This results in "flipped" locations or "teleporting," where a user appears on the opposite side of the AP from where they actually are.
To ensure accuracy, administrators must use thesmall green doton the outer ring of the AP icon in the Mist Live View. This green dot represents thephysical LEDon the AP hardware. The orientation in the UI must be rotated so that the green dot points in the exact same direction as the physical LED relative to the floor plan's perspective. It is a common misconception that APs must face true north (A) or geographical north (D); the map and APs can be oriented in any way that is convenient for the facility layout, provided therelative alignmentbetween the virtual icon and the physical device is identical.

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