Juniper Exam JN0-451 Topic 5 Question 44 Discussion

Actual exam question for Juniper's JN0-451 exam

Question #: 44
Topic #: 5

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?

AThere is BLE and Wi-Fi co-channel interference.

BThe clients are connected to the wrong WLAN.

CThe AP BLE radios do not hear the SDK-enabled client's BLE beacons.

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

Show Suggested Answer

Suggested Answer: C

If Bluetooth-only mobile client devices with an SDK-enabled app do not appear in the Mist GUI under Clients/App Clients even though they have Bluetooth enabled, it could be because the AP BLE radios do not hear the SDK-enabled client's BLE beacons.

According to the Mist documentation1, Mist SDK is a software development kit that enables indoor location and proximity services using Mist's virtual Bluetooth LE (vBLE) technology. The SDK allows mobile applications to communicate with Mist APs using BLE beacons that are transmitted by the client devices.

The devices with the SDK-enabled app have Bluetooth enabled, but they do not appear in the Mist GUI under Clients/App Clients because the AP BLE radios do not hear the SDK-enabled client's BLE beacons. This could be due to various factors such as interference, distance, obstacles, or configuration issues that affect the BLE signal strength and quality.

by Fannie at Sep 16, 2024, 04:08 AM

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Brinda

9 months ago

I'm going with C. Although, to be honest, I'm still trying to figure out how Bluetooth and Wi-Fi can interfere with each other on the same channel. Isn't that like, against the laws of physics or something?

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Sheridan

8 months ago

User 3: Pete, it's possible for Bluetooth and Wi-Fi to interfere with each other because they both operate in the 2.4 GHz frequency band.

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Pete

8 months ago

User 2: A) There is BLE and Wi-Fi co-channel interference.

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Germaine

8 months ago

User 1: C) The AP BLE radios do not hear the SDK-enabled client's BLE beacons.

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Oretha

9 months ago

Haha, option B really got me. Like, what kind of professional would connect their devices to the wrong WLAN? That's just classic user error right there.

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Gerald

10 months ago

Definitely C. No way the APs are gonna pick up those Bluetooth beacons if they're not in range. Maybe the client devices need to be moved closer to the APs.

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Noah

9 months ago

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

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Christiane

9 months ago

That makes sense. Maybe the devices are too far away from the APs.

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Franklyn

9 months ago

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

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Gertude

10 months ago

I believe the clients might be connected to the wrong WLAN, causing the devices not to appear in the Mist GUI.

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Wilda

10 months ago

Option D sounds like it could be the problem. If the client devices aren't connected to Wi-Fi or cellular, how are they supposed to connect to the Mist GUI?

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Gearldine

9 months ago

Option D sounds like it could be the problem. If the client devices aren't connected to Wi-Fi or cellular, how are they supposed to connect to the Mist GUI?

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