Exam AZ-220 topic 2 question 11 discussion

Actual exam question from Microsoft's AZ-220

Question #: 11
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 tags to the device twin.
Does the solution meet the goal?

A. Yes
B. No

Show Suggested Answer

Suggested Answer: A 🗳️
Tags are not synced.
Tags: A section of the JSON document that the solution back end can read from and write to. Tags are not visible to device apps.
Reference:
https://docs.microsoft.com/de-de/azure/iot-hub/iot-hub-devguide-device-twins https://azure.microsoft.com/sv-se/blog/deep-dive-into-azure-iot-hub-notifications-and-device-twin/

by AkashKarve at June 30, 2020, 11:04 a.m.

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AkashKarve

Highly Voted 4 years, 11 months ago

Ans should be "No". Bu using desired properties, changes will be propagated to device

upvoted 19 times

getazusername

4 years, 7 months ago

Yeah, Answer is No because solution is: Tags. A section of the JSON document that the solution back end can read from and write to. Tags are not visible to device apps. https://docs.microsoft.com/de-de/azure/iot-hub/iot-hub-devguide-device-twins

upvoted 6 times

tita_tovenaar

3 years, 11 months ago

so youre saying the answer is Yes which is correct.

upvoted 3 times

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AnonymousJhb

4 years, 1 month ago

WRONG! you are correct, the answer is tags. A desired property: is WRITTEN by a back-end application and READ ONLY by a device. A reported property is WRITTEN by a device and READ ONLY by a back-end application. A tag is set by a back-end application and is NEVER sent to a device. https://docs.microsoft.com/en-us/azure/iot-hub/tutorial-device-twins (some clown has copied the same answers from 1 question to all the questions of this sim)

upvoted 3 times

AnonymousJhb

4 years, 1 month ago

Read the question: You need to configure the GPS location for the device entry. The solution must prevent the changes from being propagated (=NEVER) to the physical device. =TAGS!

upvoted 1 times

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dariuszdbr

Highly Voted 4 years, 2 months ago

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 tags to the device twin. Does the solution meet the goal? The answer should be Yes. Updating/Adding Tags to Device Twin will not propagate changes to the device.

upvoted 13 times

AnonymousJhb

4 years, 1 month ago

you are correct, the answer is tags. A desired property: is WRITTEN by a back-end application and READ ONLY by a device. A reported property is WRITTEN by a device and READ ONLY by a back-end application. A tag is set by a back-end application and is NEVER sent to a device. https://docs.microsoft.com/en-us/azure/iot-hub/tutorial-device-twins (some clown has copied the same answers from 1 question to all the questions of this sim)

upvoted 4 times

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