Exam AZ-220 topic 2 question 23 discussion

Actual exam question from Microsoft's AZ-220

Question #: 23
Topic #: 2

Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.
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You have devices that connect to an Azure IoT hub. Each device has a fixed GPS location that includes latitude and longitude.
You discover that a device entry in the identity registry of the IoT hub is missing the GPS location.
You need to configure the GPS location for the device entry. The solution must prevent the changes from being propagated to the physical device.
Solution: You add the desired properties to the device twin.
Does the solution meet the goal?

A. Yes
B. No

Show Suggested Answer

Suggested Answer: B 🗳️

by mk07 at June 10, 2020, 5:15 p.m.

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mk07

Highly Voted 4 years, 12 months ago

shouldn't this be device tag? it says changes should not propagate to device.

upvoted 27 times

getazusername

4 years, 7 months ago

yes, https://docs.microsoft.com/de-de/azure/iot-hub/iot-hub-devguide-device-twins

upvoted 4 times

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EyeeyeeyeeyeeyeeyeeyeeyeSPIDER

Highly Voted 4 years, 10 months ago

Correct, the answer should be YES here

upvoted 11 times

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coramella

Most Recent 3 years, 4 months ago

Selected Answer: B

Desired props are propagated to device. No is the answer

upvoted 4 times

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JeeBi

4 years, 1 month ago

https://docs.microsoft.com/en-us/learn/modules/remotely-monitor-devices-with-azure-iot-hub/7-write-code-device-twins => Tags: information on the device that isn't visible to the device. Changes should not be sent to the device, so I would go with tags and answer B 'No'

upvoted 4 times

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Ashwinee

4 years, 2 months ago

i think ans is No. tags should be used

upvoted 5 times

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sballmer

4 years, 5 months ago

I think No is the right answer, in my opinion "adding a tag to the device twin" means adding a data to the desired property, which will be transmited to the device and we must prevent changes being propagated to the device. The solution is to add a tag to the device, not to the device twin.

upvoted 2 times

pbleep

4 years, 4 months ago

Tags are not desired properties and are not seen by the device and therefore would not trigger a response. Desired properties themselves are seen by devices and would trigger a response

upvoted 4 times

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