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Microsoft AZ-220

Microsoft Azure IoT Developer

Verified practice questions with detailed answers, clear explanations, and community discussion.

  • 251

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  • 8 days ago

    last updated

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Question 1 of 251

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.

After you answer a question in this section, you will NOT be able to return to it. As a result, these questions will not appear in the review screen.

You have an Azure IoT solution that includes an Azure IoT hub, a Device Provisioning Service instance, and 1,000 connected IoT devices.

All the IoT devices are provisioned automatically by using one enrollment group.

You need to temporarily disable the IoT devices from the connecting to the IoT hub.

Solution: From the Device Provisioning Service, you disable the enrollment group, and you disable device entries in the identity registry of the IoT hub to which the IoT devices are provisioned.

Does the solution meet the goal?

Answer choices
Show answer

Correct answer: A

To temporarily disable the IoT devices from connecting to the IoT hub, you need to perform two primary actions: first, disable the enrollment group in the Device Provisioning Service (DPS) to stop future auto-provisioning of devices, and second, disable the device entries in the identity registry of the IoT hub to prevent existing devices from communicating with the hub. This approach ensures that the devices are temporarily prevented from both auto-provisioning and current communication, effectively meeting the goal.

Question 2 of 251

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.

After you answer a question in this section, you will NOT be able to return to it. As a result, these questions will not appear in the review screen.

You have an Azure IoT solution that includes an Azure IoT hub, a Device Provisioning Service instance, and 1,000 connected IoT devices.

All the IoT devices are provisioned automatically by using one enrollment group.

You need to temporarily disable the IoT devices from the connecting to the IoT hub.

Solution: You delete the enrollment group from the Device Provisioning Service.

Does the solution meet the goal?

Answer choices
Show answer

Correct answer: B

Deleting the enrollment group from the Device Provisioning Service will prevent new devices from being provisioned. However, it does not affect devices that are already provisioned and connected. To temporarily disable the IoT devices from connecting to the IoT hub, you must disable the enrollment group and disable the device entries in the identity registry of the IoT hub to which the devices are already provisioned.

Question 3 of 251

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.

After you answer a question in this section, you will NOT be able to return to it. As a result, these questions will not appear in the review screen.

You have an Azure IoT solution that includes an Azure IoT hub, a Device Provisioning Service instance, and 1,000 connected IoT devices.

All the IoT devices are provisioned automatically by using one enrollment group.

You need to temporarily disable the IoT devices from the connecting to the IoT hub.

Solution: From the IoT hub, you change the credentials for the shared access policy of the IoT devices.

Does the solution meet the goal?

Answer choices
Show answer

Correct answer: B

Changing the credentials for the shared access policy of the IoT devices will indeed prevent the devices from connecting to the IoT hub. However, this method is not the most efficient nor temporary, as it requires you to manage and restore the credentials later. A more appropriate solution would be to disable the devices directly from the IoT hub or to temporarily disable the enrollment group, which would effectively and temporarily prevent the devices from connecting.

Question 4 of 251

HOTSPOT -

You have an Azure IoT hub.

You plan to deploy 1,000 IoT devices by using automatic device management.

The device twin is shown below.

Exam AZ-220: Question 4 - Image 1

You need to configure automatic device management for the deployment.

Which target Condition and Device Twin Path should you use? To answer, select the appropriate options in the answer area.

NOTE: Each correct selection is worth one point.

Hot Area:

Exam AZ-220: Question 4 - Image 2
Show answer

Suggested answer

Box 1: tags.engine.warpDriveType='VM105a'
Use tags to target twins. Before you create a configuration, you must specify which devices or modules you want to affect. Azure IoT Hub identifies devices and using tags in the device twin, and identifies modules using tags in the module twin.
Box 2: properties.desired.warpOperating
The twin path, which is the path to the JSON section within the twin desired properties that will be set.
For example, you could set the twin path to properties.desired.chiller-water and then provide the following JSON content:
{
"temperature": 66,
"pressure": 28
}
Reference:
https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-automatic-device-management Exam AZ-220: Question 4 - Image 3

Question 5 of 251

You plan to deploy a standard tier Azure IoT hub.

You need to perform an over-the-air (OTA) update on devices that will connect to the IoT hub by using scheduled jobs.

What should you use?

Answer choices
Show answer

Correct answer: D

To perform an over-the-air (OTA) update on devices connected to an Azure IoT hub using scheduled jobs, you should use a direct method. Direct methods are suitable for triggering specific actions on IoT devices in real-time, such as initiating a firmware update. This option allows the job to invoke the necessary update process on the devices, which aligns with the requirement of performing scheduled OTA updates. While other methods like cloud-to-device messages and device twin properties have their use cases, direct methods are specifically designed for executing precise actions like firmware updates on devices.

Community votes

10 votes

CMost voted

70%

DSuggested

30%

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Charles Sirois
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As this was my first certification exam, I was understandably nervous about what to expect. These study materials made the preparation process much easier, and many of the questions closely reflected those on the actual exam.
Lance Chambers
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Wasted about a month going through the free dump sites scattered all over reddit, half the answers were wrong and the other half were for a version of the exam that doesn't even exist anymore. Eventually gave in and paid the small fee here, and the difference was night and day.
Alisha Kelly
Italy
Honestly, I had already gone through the official documentation quite thoroughly, but still didn't feel fully confident going in. This helped things finally click for me. I realized I knew the material, but just hadn't connected all the pieces yet.
Casper Claassen
Netherlands
Used this along with Microsoft Learn and the combo worked really well. The practice questions made the stuff I'd read actually stick. Passed first attempt, no complaints from me.
Gabriele Ghesla
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The content is accurate and clearly presented, and it's more affordable than competitors. The team has been incredibly responsive whenever I've had an issue, and they've been open to small changes that improve the platform.
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Morgan Farmer
United Kingdom
I don't usually leave reviews, but this one felt worth sharing. The questions were quite close to what actually appeared on the exam, more than I expected. I spent about a week going through the material before my test, and it helped me feel more prepared.
Remi Nuyts
United States
Passed ITIL 4 Foundation with 87%. Material was enough by itself.
Archie Hopkins
United States
I had a smooth experience from start to finish. Access was available right away, no technical issues, which made it easy to get started. The content felt relevant and aligned well with what I was looking for.
Nancy Mcbride
United States
Does what it says it does. Content felt solid, nothing confusing to navigate and I didn't run into any weird issues. I been putting off scheduling the exam for a while and going through this gave me enough confidence to finally book it and pass.
Neil Savage
United States
A very quick response was received via email when a link issue occurred. The study materials provided were high quality and extremely helpful. I was able to complete the test successfully. Many thanks for the excellent support.

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