Updated Microsoft AZ-220 Exam Questions – Ensure You Pass

1. Topic 1, Contoso



Case Study

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.





Existing Environment. Current State of Development

Contoso produces a set of Bluetooth sensors that read the temperature and humidity. The sensors connect to IoT gateway devices that relay the data.



All the IoT gateway devices connect to an Azure IoT hub named iothub1.



Existing Environment. Device Twin

You plan to implement device twins by using the following JSON sample.







Existing Environment. Azure Stream Analytics

Each room will have between three to five sensors that will generate readings that are sent to a single IoT gateway device. The IoT gateway device will forward all the readings to iothub1 at intervals of between 10 and 60 seconds.



You plan to use a gateway pattern so that each IoT gateway device will have its own IoT Hub device identity.



You draft the following query, which is missing the GROUP BY clause.



SELECT

AVG(temperature),

System.TimeStamp() AS AsaTime

FROM

Iothub



You plan to use a 30-second period to calculate the average temperature reading of the sensors.



You plan to minimize latency between the condition reported by the sensors and the corresponding alert issued by the Stream Analytics job.



Existing Environment. Device Messages

The IoT gateway devices will send messages that contain the following JSON data whenever the temperature exceeds a specified threshold.







The level property will be used to route the messages to an Azure Service Bus queue endpoint named criticalep.



Existing Environment. Issues

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



Requirements. Planning Changes

Contoso plans to make the following changes:

- Use Stream Analytics to process and view data.

- Use Azure Time Series Insights to visualize data.

- Implement a system to sync device statuses and required settings.

- Add extra information to messages by using message enrichment.

- Create a notification system to send an alert if a condition exceeds a specified threshold.

- Implement a system to identify what causes the intermittent connection issues and lost messages.



Requirements. Technical Requirements

Contoso must meet the following requirements:

- Use the built-in functions of IoT Hub whenever possible.

- Minimize hardware and software costs whenever possible.

- Minimize administrative effort to provision devices at scale.

- Implement a system to trace message flow to and from iothub1.

- Minimize the amount of custom coding required to implement the planned changes.

- Prevent read operations from being negatively affected when you implement additional services.



You need to enable telemetry message tracing through the entire IoT solution.

What should you do?

2. What should you do to identify the cause of the connectivity issues?

3. You plan to deploy Azure Time Series Insights.

What should you create on iothub1 before you deploy Time Series Insights?

4. How should you complete the GROUP BY clause to meet the Streaming Analytics requirements?

5. HOTSPOT

You create a new IoT device named device1 on iothub1. Device1 has a primary key of Uihuih76hbHb.

How should you complete the device connection string? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

6. HOTSPOT

You need to use message enrichment to add additional device information to messages sent from the IoT gateway devices when the reported temperature exceeds a critical threshold.

How should you configure the enrich message values? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

7. 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?

8. HOTSPOT

You are writing code to provision IoT devices by using the Device Provisioning Service.

Which two details from the Overview blade of the Device Provisioning Service are required to provision a new IoT client device? To answer, select the appropriate detail in the answer area. NOTE: Each correct selection is worth one point.

9. Topic 2, ADatum



Case Study

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.



Requirements. Planned Changes

ADatum is developing an Azure IoT solution to monitor environmental conditions. The IoT solution consists of hardware devices and cloud services. All the devices will communicate directly to Azure IoT Hub.



The hardware devices will be deployed to the branch offices and will collect data about various environmental conditions such as temperature, humidity, air quality, and noise level. The devices will be wired by using Power over Ethernet (PoE) connections.



ADatum is developing the solution in the following three phases: proof of value (POV), pilot, and production.



Requirements. POV Requirements

The POV phase will demonstrate that a technical solution is viable. During this phase, 100 devices will be deployed to the main office and Azure Stream Analytics will be connected to an IoT hub to generate real-time alerts.

Stream Analytics will perform the following processing:

- Calculate the median rate of the telemetry across the entire devices that exceed the median rate by a factor of 4.

- Compare the current telemetry to the specified thresholds and issue alerts when telemetry values are out of range.

- Ensure that all message content during this phase is human readable to simplify debugging.



Requirements. Pilot Requirements

During the pilot phase, devices will be deployed to 10 offices. Each office will have up to 1,000 devices.

During this phase, you will add Azure Time Series Insights in parallel to Stream Analytics to support real-time graphs and queries in a dashboard web app.



The pilot deployment must minimize operating costs.



Requirements. Production Requirements

The production phase will include all the offices.

The production deployment will have one IoT hub in each Azure region. Devices must connect to the IoT hub in their region.



The production phase must meet the following requirements:

- Ensure that the IoT solution can support performance and scale targets.

- Ensure that the IoT solution support up to 1,000 devices per office.

- Minimize operating costs of the IoT solution.



Requirements. Technical Requirements

Datum identifies the following requirements for the planned IoT solution:

- The solution must generate real-time alerts when a fire condition is detected in an office. All the devices in that office must trigger an audible alarm siren within 10 seconds of the alert.

- A dashboard UI must display alerts and the system status in real time and must allow device operators to make adjustments to the system.

- Each device will send hourly updates to IoT Hub. Condition alerts will be sent immediately.

- Multiple types of devices will collect telemetry that has different schemas.

- IoT Hub must perform message routing based on the message body.

- Direct methods must be used for cloud-to-device communication.

- Reports must be provided monthly, quarterly, and annually.

- Stored data queries must be as efficient as possible.

- The device message size will be under 4 KB.

- Development effort must be minimized.



Requirements. Throttle and Quotas

The relevant throttles and quotas for various IoT Hub tiers are shown in the following table.







Requirements. IoT Hub Routing

You plan to implement IoT Hub routing during the POV phase as shown in the following exhibit.







During the POV phase, telemetry from IoT Hub stops flowing to the hot path. The cold path continues to work.

What should you do to restore the hot path?

10. You need to configure Stream Analytics to meet the POV requirements.

What are two ways to achieve the goal? Each Answer presents a complete solution. NOTE: Each correct selection is worth one point.

11. DRAG DROP

You need to add Time Series Insights to the solution to meet the pilot requirements.

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.

12. You need to recommend the format of telemetry messages to meet the POV requirements.

What should you recommend?

13. During the POV phase, you connect a device to IoT Hub and start sending telemetry messages.

You need to verify the content of the messages received by IoT Hub during the POV phase.

What should you use?

14. You need to store the real-time alerts generated by Stream Analytics to meet the technical requirements.

Which type of Stream Analytics output should you configure?

15. Topic 3, Misc. Questions



You are configuring a production environment for an Azure IoT solution.

You plan to deploy 1,000 IoT devices. Each device will send one device-to-cloud message every hour. Each message will be 4 KB.

You need to deploy an Azure IoT hub that will support the IoT device deployment.

The solution must meet the following requirements:

✑ Perform bulk device operations such as creating multiple device identities.

✑ Minimize costs

What should you deploy?

16. HOTSPOT

You have an Azure IoT Central application that has a custom device template.

You need to configure the device template to support the following activities:

✑ Return the reported power consumption.

✑ Configure the desired fan speed.

✑ Run the device reset routine.

✑ Read the fan serial number.

Which option should you use for each activity? Each correct answer presents part of the solution. NOTE: Each correct selection is worth one point.

17. You have 1,000 IoT devices that connect to an Azure IoT hub.

Each device has a property tag named city that is used to store the location of the device.

You need to update the properties on all the devices located at an office in the city of Seattle as quickly as possible. Any new devices in the Seattle office that are added to the IoT hub must receive the updated properties also.

What should you do?

18. 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: You delete the enrollment group from the Device Provisioning Service. Does the solution meet the goal?

19. You plan to deploy an Azure IoT hub.

The IoT hub must support the following:

✑ Three Azure IoT Edge devices 2,500 IoT devices

✑ Each IoT device will spend a 6 KB message every five seconds.

You need to size the IoT hub to support the devices. The solution must minimize costs.

What should you choose?

20. HOTSPOT

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.

21. You have an Azure 10T solution.

You plan to register an Azure loT Edge device by using X.509 self-signed certificates.

You need to provide the thumbprint for the primary and secondary certificates.

Solution: You generate a 64-hex character SHA256 hash for the certificates.

Does this meet the goal?

22. You have an Azure IoT solution that includes an Azure IoT hub.

You plan to deploy 10,000 IoT devices.

You need to validate the performance of the IoT solution while 10,000 concurrently connected devices stream telemetry. The solution must minimize effort.

What should you deploy?

23. DRAG DROP

You need to install the Azure IoT Edge runtime on a new device that runs Windows 10 IoT Enterprise.

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

24. HOTSPOT

You have an Azure 10T hub and an I0T device.

You are developing an loT solution that will generate an alert when the IoT device leaves a geofenced area.

The device sends telemetry in the following format.





You create an Azure Stream Analytics job that uses telemetry input from the loT hub and a reference input that contains the data shown in the following table.





How should you complete the Stream Analytics query? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

25. You have the devices shown in the following table.





You are implementing a proof of concept (POC) for an Azure IoT solution.

You need to deploy an Azure IoT Edge device as part of the POC.

On which two devices can you deploy IOT Edge? Each correct answer presents a complete solution. NOTE: Each correct selection is worth one point.

26. You have an Azure IoT Edge device.

You need to modify the credentials used to access the container registry.

What should you modify?

27. You have an existing Azure IoT hub.

You need to connect physical IoT devices to the IoT hub.

You are connecting the devices through a firewall that allows only port 443 and port 80.

Which three communication protocols can you use? Each correct answer presents a complete solution. NOTE: Each correct selection is worth one point.

28. You have an Azure IoT solution that contains an Azure loT hub and Azure 10T Edge devices.

You need to configure the metrics- collector module on the devices to send metrics to the loT hub as device-to-cloud messages.

Which environment variable should you update?

29. HOTSPOT

You have an Azure subscription that contains an Azure loT hub named Hub1 and the IoT devices shown in the following table.





You have the automatic device configure rations shown in the following table.





For each of the following statements, select Yes if the statement is true. Otherwise, select No. NOTE: Each correct selection is worth one point.

30. DRAG DROP

You have an Azure IoT Edge solution.

You plan to deploy an Azure Security Center for IoT security agent.

You need to configure the security agent to meet the following requirements:

✑ Connection events must be reported as high priority.

✑ High priority events must be collected every seven minutes.

How should you configure the azureiotsecurity module twin? To answer, drag the appropriate values to the correct locations. Each value may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content. NOTE: Each correct selection is worth one point.

31. HOTSPOT

You have four physical loT devices that connect to an Azure loT hub named iothub1.

The devices are configured as shown in the following table.





For each of the following statements, select yes if the statement is true. Otherwise, select No. NOTE: Each correct selection is worth one point.

32. DRAG DROP

You need to install the Azure IoT Edge runtime on a new device that runs Windows 10 IoT Enterprise.

Which four 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.

33. HOTSPOT

You have an Azure loT hub

You have four Azure 10T Edge devices and.

The device twin code shown in the following table.





You have three deployments and the deployment code shown in the following table.





For each of the following statements, select Yes if the statement is true. Otherwise, select No. NOTE: Each correct selection is worth one point.

34. 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 query to the following.





Does this meet the goal?

35. DRAG DROP

You have 100 devices that connect to an Azure IoT hub.

You need to be notified about failed local logins to a subnet of the devices.

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.

36. You have an Azure IoT solution that includes an Azure IoT hub, 100 Azure IoT Edge devices, and 500 leaf devices.

You need to perform a key rotation across the devices.

Which three types of entities should you update? Each Answer presents part of the solution. NOTE: Each correct selection is worth one point.

37. You have an Azure subscription that contains the resources shown in the following table.





You create a group enrollment in DPS1 and enroll 100 loT devices. Each device is issued a leaf certificate from CAT. You need to deprovision a single loT device from the group enrollment. The solution must not affect the other devices.

Solution: Solution: You create a disabled individual enrollment by using the X.509 certificate of CA1.

Does this meet the goal?

38. You have an Azure IoT hub.

You need to recommend a solution to scale the IoT hub automatically.

What should you include in the recommendation?

39. HOTSPOT

You are planning a proof of concept (POC) that will use an Azure IoT hub.

You have two self-signed client authentication certificates named Cert1 and Cert2. Cert1 has a basic constraint that contains Subject Type=CA. Cert2 has a basic constraint that contains Subject Type=End Entity.

You need to identify which certificates to use.

What should you identify? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

40. You have an Azure IoT hub.

You need to enable Azure Defender for IoT on the IoT hub.

What should you do?

41. 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 are developing a custom Azure IoT Edge module.

The module needs to identify the device ID of the local device.

Solution: You configure the module to read the device ID of the device twin.

Does this meet the goal?

42. You have 20 devices that connect to an Azure IoT hub.

You open Azure Monitor as shown in the exhibit. (Click the Exhibit tab.)





You discover that telemetry is not being received from five IoT devices.

You need to identify the names of the devices that are not generating telemetry and visualize the data.

What should you do first?

43. You have an Azure IoT Edge module named SampleModule that runs on a device named Device1.

You make changes to the code of SampleModule by using Microsoft Visual Studio Code.

You need to push the code to the container registry and then deploy the module to Device1.

Which two actions should you perform from Visual Studio Code? Each correct answer presents part of the solution. NOTE: Each correct selection is worth one point.

44. You have an Azure subscription that contains an Azure IoT hub, 500 IoT devices, and an Azure Time Series Insights Gen2 environment named Environment1.

You need to add calculated values to the Time Series Model.

What should you use?

45. 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 are developing a custom Azure IoT Edge module.

The module needs to identify the device ID of the local device.

Solution: You configure the module to read the IOTEDGE_DEVICEID environment variable.

Does this meet the goal?

46. HOTSPOT

You have an Azure IoT solution that includes an Azure IoT hub and 50 IoT devices.

The device twins have the following structure.





You need to configure message enrichments to add the following values to messages:

• The device deployment location

• The device firmware version

How should you configure the message enrichments? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

47. 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 query to the following.





Does this meet the goal?

48. 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 a Standard tier Azure IoT hub and a fleet of IoT devices.

The devices connect to the IoT hub by using either Message Queuing Telemetry Transport (MQTT) or Advanced Message Queuing Protocol (AMQP).

You need to send data to the IoT devices and each device must respond. Each device will require three minutes to process the data and respond.

Solution: You schedule an IoT Hub job to update the twin tags and you query for job progress.

Does this meet the goal?

49. DRAG DROP

You have an instance of Azure Time Series Insights and an Azure IoT hub that receives streaming telemetry from IoT devices.

You need to configure Time Series Insights to receive telemetry from the devices.

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.

50. DRAG DROP

You are troubleshooting device connections to and disconnections from an Azure IoT hub.

You configure diagnostic logging for the IoT hub to send to Log Analytics.

You need to generate a report that displays the device connection and disconnection events.

How should you complete the query? To answer, drag the appropriate values to the correct targets. Each value may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content. NOTE: Each correct selection is worth one point.

51. HOTSPOT

You are creating an Azure Digital Twins Query.

You need to return all the digital twins that have a contains relationship with a digital twin that has an ID of twin1.

How should you complete the query? To answer, select the appropriate options m the answer area. NOTE: Each correct selection is worth one point.

52. 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 a Standard tier Azure IoT hub and a fleet of IoT devices.

The devices connect to the IoT hub by using either Message Queuing Telemetry Transport (MQTT) or Advanced Message Queuing Protocol (AMQP).

You need to send data to the IoT devices and each device must respond. Each device will require three minutes to process the data and respond.

Solution: You use direct methods and check the response.

Does this meet the goal?

53. DRAG DROP

You have an Azure IoT solution that includes an Azure IoT hub, a Device Provisioning Service instance, and 1,000 connected IoT devices. The IoT devices are allocated to tour enrollment groups. Each enrollment group is configured to use certificate attestation.

You need to decommission all the devices in a single enrollment group and the enrollment group itself.

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.

54. You have 10,000 IoT devices that connect to an Azure IoT hub. The devices do not support over-the-air (OTA) updates.

You need to decommission 1,000 devices. The solution must prevent connections and autoenrollment for the decommissioned devices.

Which two actions should you perform? Each correct answer presents part of the solution. NOTE: Each correct selection is worth one point.