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?

• A.az iot hub monitor-feedback --hub-name Hub1
• B.az iot hub generate-sas-token --hub-name Hub1
• C.az iot hub configuration list --hub-name Hub1
• D.az extension add -name azure-cli-iot-ext

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You have a digital twin model named Modell and a digital twin named Twin!. Twinl uses Modell.
You need to prevent new digital twins from using Modell. The solution must ensure that you can edit the properties of Twinl.
What should you do?

• A.Delete Modell.
• B.Decommission Modell.
• C.Update the version of Modell.
• D.Update the schema of Model 1.

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You deploy an Azure Digital Twins instance.
You are developing client code that will modify digital twin data.
You run the client code and receive the following response for an Azure Digital Twins API.
403 (Forbidden)
You need to configure access control for the Azure Digital Twins instance to ensure that the client code can modify the data.
Which role should you assign?

• A.Contributor
• B.Azure Digital Twins Data Owner
• C.Owner
• D.Managed Application Operator Role

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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.

Correct Answer:

1 - Disable the enrollment group.
2 - Delete each device from the identity registry.
3 - Delete the enrollment group.
Reference:
https://docs.microsoft.com/en-us/azure/iot-dps/how-to-unprovision-devices

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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?

• A.Add the Number of throttling errors metric and archive the logs to an Azure storage account.
• B.Configure diagnostics for Routes and stream the logs to Azure Event Hubs.
• C.Add the Telemetry messages sent metric and archieve the logs to an Azure Storage account.
• D.Configure diagnostics for Connections and send the logs to Azure Log Analytics.

Correct Answer: D

Explanation
To log device connection events and errors, turn on diagnostics for IoT Hub. We recommend turning on these logs as early as possible, because if diagnostic logs aren't enabled, when device disconnects occur, you won't have any information to troubleshoot the problem with.
* Sign in to the Azure portal.
* Browse to your IoT hub.
* Select Diagnostics settings.
* Select Turn on diagnostics.
* Enable Connections logs to be collected.
* For easier analysis, turn on Send to Log Analytics

Reference:
https://docs.microsoft.com/bs-cyrl-ba/azure/Iot-hub/iot-hub-troubleshoot-connectivity

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