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How much AZ-220:Microsoft Azure IoT Developer Exam Cost

The price of the Microsoft Mobility and Devices Fundamentals exam is $165 USD, for more information related to exam price please visit to Microsoft Training website as prices of Microsoft exams fees get varied country wise.

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Languages: English, Japanese, Chinese (Simplified), Korean

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This exam measures your ability to set up the IoT solution infrastructure; provision and manage devices; implement IoT Edge; process and manage data; monitor, troubleshoot, and optimize IoT solutions; and implement security.

Microsoft Azure IoT Developer Sample Questions (Q83-Q88):


You have an Azure subscription that contains an Azure IoT hub and two IoT devices named Device1 and Device2.

You plan to deploy an Azure IoT Edge gateway device named Gateway1.

You need to ensure that all device-to-cloud messages and twin change notifications from Device1 and Device2 to the IoT hub are routed by using Gateway1.

What tasks should you perform to configure the devices? To answer, select the appropriate options in the answer area.

NOTE: Each correct selection is worth one point.




Graphical user interface, text, application, email Description automatically generated

Box 1: Device1 and Device2

Connection strings for downstream devices need the following components:

* The gateway device that the device connects through. Provide the hostname value from the IoT Edge gateway device's config file: GatewayHostName={gateway hostname} Box 2: Gateway1 To deploy the IoT Edge hub module and configure it with routes to handle incoming messages from downstream devices, follow these steps:

* In the Azure portal, navigate to your IoT hub.

* Go to IoT Edge and select your IoT Edge device that you want to use as a gateway.

* Select Set Modules.

* On the Modules page, you can add any modules you want to deploy to the gateway device.

* Select Next: Routes.

* On the Routes page, make sure that there is a route to handle messages coming from downstream devices. For example:A route that sends all messages, whether from a module or from a downstream device, to IoT Hub:

Name: allMessagesToHub Value: FROM /messages/* INTO $upstream

Box 3: FROM /messages/* INTO $upstream




You need to recommend a solution to keep device properties synced to IoT Hub. The solution must minimize data loss caused by the connectivity issues.

What should you include in the recommendation?

  • A. Azure Event Grid
  • B. loT Hub device twins
  • C. the loT Hub direct method
  • D. a cloud-to-device message

Answer: B


Scenario: You discover connectivity issues between the IoT gateway devices and iothub1, which cause IoT devices to lose connectivity and messages.

To synchronize state information between a device and an IoT hub, you use device twins. A device twin is a JSON document, associated with a specific device, and stored by IoT Hub in the cloud where you can query them. A device twin contains desired properties, reported properties, and tags.



This is a case study. Case studies are not timed separately. You can use as much exam time as you would like to complete each case. However, there may be additional case studies and sections on this exam. You must manage your time to ensure that you are able to complete all questions included on this exam in the time provided.

To answer the questions included in a case study, you will need to reference information that is provided in the case study. Case studies might contain exhibits and other resources that provide more information about the scenario that is described in the case study. Each question is independent of the other question on this case study.

At the end of this case study, a review screen will appear. This screen allows you to review your answers and to make changes before you move to the next sections of the exam. After you begin a new section, you cannot return to this section.

To start the case study

To display the first question on this case study, click the Next button. Use the buttons in the left pane to explore the content of the case study before you answer the questions. Clicking these buttons displays information such as business requirements, existing environment, and problem statements. If the case study has an All Information tab, note that the information displayed is identical to the information displayed on the subsequent tabs. When you are ready to answer a question, click the Question button to return to the question.


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 question, 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?

  • A. Yes
  • B. No

Answer: A


You may find it necessary to deprovision devices that were previously auto-provisioned through the Device Provisioning Service.

In general, deprovisioning a device involves two steps:

1. Disenroll the device from your provisioning service, to prevent future auto-provisioning. Depending on whether you want to revoke access temporarily or permanently, you may want to either disable or delete an enrollment entry.

2. Deregister the device from your IoT Hub, to prevent future communications and data transfer. Again, you can temporarily disable or permanently delete the device's entry in the identity registry for the IoT Hub where it was provisioned.




Your company is creating a new camera security system that will use Azure IoT Hub.

You plan to use an Azure IoT Edge device that will run Ubuntu Server 18.04.

You need to configure the IoT Edge device.

Which three actions should you perform in sequence? To answer, move the appropriate actions from the list of actions to the answer area and arrange them in the correct order.



1 - Run the following commands

2 - From Iot Hub,create an IoT Edge device registry entry.

3 - Add the connection string to..




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 Stream Analytics job that receives input from an Azure IoT hub and sends the outputs to Azure Blob storage. The job has compatibility level 1.1 and six streaming units.

You have the following query for the job.

You plan to increase the streaming unit count to 12.

You need to optimize the job to take advantage of the additional streaming units and increase the throughput.

Solution: You change the compatibility level of the job to 1.2.

Does this meet the goal?

  • A. No
  • B. Yes

Answer: A


Max number of Streaming Units with one step and with no partitions is 6.





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