AZ-220 Online Practice Questions and Answers

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

You have an Azure IoT solution that includes an Azure IoT hub and 100 Azure IoT Edge devices.

You plan to deploy the IoT Edge devices to external networks. The firewalls of the external networks only allow traffic on port 80 and port 443.

You need to ensure that the devices can connect to the IoT hub. The solution must minimize costs.

What should you do?

A. Configure the upstream protocol of the devices to use MQTT over TCP.

B. Configure the upstream protocol of the devices to use MQTT over WebSocket.

C. Connect the external networks to the IoT solution by using ExpressRoute.

D. Integrate cellular communication hardware onto the devices and avoid the use of the external networks.

You have 100 devices that connect to an Azure IoT hub named Hub1. The devices connect by using a symmetric key.

You deploy an IoT hub named Hub2.

You need to migrate 10 devices from Hub1 to Hub2. The solution must ensure that the devices retain the existing symmetric key.

What should you do?

A. Add a desired property to the device twin of Hub2. Update the endpoint of the 10 devices to use Hub2.

B. Add a desired property to the device twin of Hub1. Recreate the device identity on Hub2.

C. Recreate the device identity on Hub2. Update the endpoint of the 10 devices to use Hub2.

D. Disable the 10 devices on Hub1. Update the endpoint of the 10 devices to use Hub2.

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 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

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?

A. Create an SMS alert in IoT Hub for the Total number of messages used metric.

B. Create an Azure function that retrieves the quota metrics of the IoT hub.

C. Configure autoscaling in Azure Monitor.

D. Emit custom metrics from the IoT device code and create an Azure Automation runbook alert.

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 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

From the Device Provisioning Service, you create an enrollment as shown in the exhibit.

You need to deploy a new IoT device.

What should you use as the device identity during attestation?

A. a self-signed X.509 certificate

B. the random string of alphanumeric characters

C. the HMAC-SHA256 hash of the device's registration ID

D. the endorsement key of the device's Trusted Platform Module (TPM)

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?

A. Yes

B. No

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

A. GROUP BY HoppingWindow(Second, 60, 30)

B. GROUP BY TumblingWindow(Second, 30)

C. GROUP BY SlidingWindow(Second, 30)

D. GROUP BY SessionWindow(Second, 30, 60)

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:

1.

Return the reported power consumption.

2.

Configure the desired fan speed.

3.

Run the device reset routine.

4.

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.

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