What does this exam cover?

Azure IoT development solutions.

You have 10 IoT devices that connect to an Azure IoT hub named Hub1. From Azure Cloud Shell, you run az iot hub monitor-events --hub-name Hub1 and receive the following error message: "az iot hub: 'monitor-events' is not in the 'az iot hub' command group. See 'az iot hub --help'." You need to ensure that you can run the command successfully. What should you run first?

Correct Answer: az extension add -name azure-cli-iot-ext

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

Correct Answer: Use the heartbeat pattern to send messages from the IoT devices to iothub1.

You need to configure Stream Analytics to meet the POV requirements. What are two ways to achieve the goal? Each correct answer presents a complete solution. NOTE: Each correct selection is worth one point.

Correct Answer: From IoT Hub, create a custom event hub endpoint, and then configure the endpoint as an input to Stream Analytics.

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?

Correct Answer: Microsoft Visual Studio Code that uses the IoT Hub Toolkit or Azure CLI that uses the IoT Hub extension

You have an Azure Stream Analytics job that connects to an Azure IoT hub named Hub1445 as a streaming data source. Hub1445 is configured as shown in the exhibit. The Stream Analytics job fails to receive any messages from the IoT hub. What should you do to resolve the issue?

Correct Answer: Enable the fallback route.

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

Correct Answer: GROUP BY HoppingWindow(Second, 60, 30)

You are troubleshooting an Azure IoT hub. You discover that some telemetry messages are dropped before they reach downstream processing. You suspect that IoT Hub throttling is the root cause. Which log in the Diagnostics settings of the IoT hub should you use to capture the throttling error events?

Correct Answer: DeviceTelemetry

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?

Correct Answer: the endorsement key of the device's Trusted Platform Module (TPM)

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?

Correct Answer: Azure Blob storage

You have 1,000 devices that connect to a standard tier Azure IoT hub. All the devices are commissioned and send telemetry events to the built-in IoT Hub endpoint. You configure message enrichment on the events endpoint and set the enrichment value to $twin.tags.ipV4. When you inspect messages on the events endpoint, you discover that all the messages are stamped with a string of "$twin.tags.ipV4". What are two possible causes of the issue? Each correct answer presents a complete solution. NOTE: Each correct selection is worth one point.

Correct Answer: Message enrichment cannot be added to messages going to a built-in endpoint.

You have IoT devices that connect to an Azure IoT hub. From IoT Hub, you create an Event subscription to be notified when devices are registered to IoT Hub. You select webhook endpoint as a handler for the Event subscription. Which two types of Event Grid messages will be received by the webhook? Each correct answer presents a complete solution. NOTE: Each correct selection is worth one point.

Correct Answer: Microsoft.EventGrid.SubscriptionValidationEvent

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?

Correct Answer: a cloud-to-device message

You have an Azure IoT hub that has a hostname of contoso-hub.azure-devices.net and an MCU-based IoT device named Device1. Device1 does NOT support Azure IoT SDKs. You plan to connect Device1 to the IoT hub by using the Message Queuing Telemetry Transport (MQTT) protocol and to authenticate by using X.509 certificates. You need to ensure that Device1 can authenticate to the IoT hub. What should you do?

Correct Answer: From the Azure portal, create an IoT Hub Device Provisioning Service (DPS) instance and add a certificate enrollment for Device1.

You have an IoT device that gathers data in a CSV file named Sensors.csv. You deploy an Azure IoT hub that is accessible at ContosoHub.azure-devices.net. You need to ensure that Sensors.csv is uploaded to the IoT hub. Which two actions should you perform? Each correct answer presents part of the solution. NOTE: Each correct selection is worth one point.

Correct Answer: From the Azure subscription, select the IoT hub, select File upload, and then configure a storage container.

You have an existing Azure IoT hub. You use IoT Hub jobs to schedule long running tasks on connected devices. Which three operations do the IoT Hub jobs support directly? Each correct answer presents a complete solution. NOTE: Each correct selection is worth one point.

Correct Answer: Send cloud-to-device messages.

You have an Azure IoT solution that includes an Azure IoT Hub named Hub1 and an Azure IoT Edge device named Edge1. Edge1 connects to Hub1. You need to deploy a temperature module to Edge1. What should you do?

Correct Answer: From the Azure portal, navigate to Hub1 and select IoT Edge. Select Edge1, select Device Twin, and then set the deployment manifest as a desired property. From a Bash prompt, run the following command: az iot hub monitor-events --device-id Edge1 --hub-name Hub1

You have 1,000 devices that connect to an Azure IoT hub. You are performing a scheduled check of deployed IoT devices. You plan to run the following command from the Azure CLI prompt. az iot hub query --hub-name hub1 --query-command "SELECT * FROM devices WHERE connectionState = 'Disconnected'" What does the command return?

Correct Answer: the device credentials

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?

Correct Answer: one unit of the B1 tier

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?

Correct Answer: Configure autoscaling in Azure Monitor.

You have an Azure IoT Edge device. You need to modify the credentials used to access the container registry. What should you modify?

Correct Answer: the IoT Edge module

You have an Azure IoT hub that uses a Device Provisioning Service instance. You create a new individual device enrollment that uses symmetric key attestation. Which detail from the enrollment is required to auto provision the device by using the Device Provisioning Service?

Correct Answer: the registration ID of the enrollment

You enable Azure Security Center for IoT. You need to onboard a device to Azure Security Center. What should you do?

Correct Answer: Modify the connection string of the device.

You have an Azure IoT hub that uses a Device Provisioning Service instance to automate the deployment of Azure IoT Edge devices. The IoT Edge devices have a Trusted Platform Module (TPM) 2.0 chip. From the Azure portal, you plan to add an individual enrollment to the Device Provisioning Service that will use the TPM of the IoT Edge devices as the attestation mechanism. Which detail should you obtain before you can create the enrollment?

Correct Answer: the endorsement key and the registration ID

You have an Azure IoT solution that includes a basic tier Azure IoT hub named Hub1 and a Raspberry Pi device named Device1. Device1 connects to Hub1. You back up Device1 and restore the backup to a new Raspberry Pi device. When you start the new Raspberry Pi device, you receive the following error message in the diagnostic logs of Hub1: "409002 LinkCreationConflict." You need to ensure that Device1 and the new Raspberry Pi device can run simultaneously without error. Which two actions should you perform? Each correct answer presents part of the solution. NOTE: Each correct selection is worth one point.

Correct Answer: Upgrade Hub1 to the standard tier.

You have a remote network that contains an IoT device named Device1 and a firewall named Firewall1. You have an Azure subscription that contains an Azure IoT hub named Hub1. Device1 is registered to Hub1. Firewall1 only allows outbound traffic from Hub1 via TCP port 443. You need to build an app that will connect to Device1 by using SSH on port 22. The solution must minimize costs. What should you configure to connect to Device1?

Correct Answer: Azure Private Link

You have 1,000 devices that connect to an Azure IoT hub. You discover that some of the devices fail to send data to the IoT hub. You need to ensure that you can use Azure Monitor to troubleshoot the device connectivity issues. Which two actions should you perform? Each correct answer presents part of the solution. NOTE: Each correct selection is worth one point.

Correct Answer: Collect the DeviceTelemetry, Connections, and Routes logs.

You have an Azure IoT hub that is being taken from prototype to production. You plan to connect IoT devices to the IoT hub. The devices have hardware security modules (HSMs). You need to use the most secure authentication method between the devices and the IoT hub. Company policy prohibits the use of internally generated certificates. Which authentication method should you use?

Correct Answer: a symmetric key

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.

Correct Answer: MQTT over WebSocket

You are developing an Azure IoT solution for a shipping company. The company's ships will have sensors used for predictive maintenance. Some sensor devices will be MQTT-capable, and others will use Modbus. Each ship has an internet connection that is available only when the ship is docked. You create an Azure IoT hub. You need to implement an IoT solution that uses Azure IoT Edge. What should you do?

Correct Answer: Add the MQTT devices to the IoT hub and configure an IoT Edge gateway. From the IoT Edge gateway device, assign the MQTT devices as child devices of the gateway. Deploy an IoT Edge Modbus module.

You need to visualize Azure IoT Hub telemetry data by using Microsoft Power BI. Which service should you connect to the IoT hub?

Correct Answer: Azure Stream Analytics

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Microsoft Azure IoT Developer

Develop IoT solutions on Microsoft Azure for connected devices.

4.8★★★★★(238 ratings)

21,844 studentsIntermediate

Learn to build and operate Internet of Things solutions using Azure services. The exam covers device connectivity, data ingestion, monitoring, and cloud integration for intelligent edge environments. This certification is useful for developers working with connected systems and telemetry. It helps you turn device data into practical business and operational insight.

What you'll learn

Connect IoT devices- Ingest telemetry data- Monitor device health- Integrate cloud services- Support IoT workloads

AZ-220

Lectures2

Quizzes0

Duration30 week

Students21,844

$20.00

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