You have an Azure IoT hub that uses a Device Provision Service instance.
You plan to deploy 100 IoT devices.
You need to confirm the identity of the devices by using the Device Provision Service.
Which three device attestation mechanisms can you use? Each correct answer presents a complete solution.
NOTE: Each correct selection is worth one point.

• A.X.509 certificates
• B.Trusted Platform Module (TPM) 2.0
• C.Trusted Platform Module (TPM) 1.2
• D.Symmetric key
• E.Device Identity Composition Engine (DICE)
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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.

• A.From the Diagnostics settings of the IoT hub, select Archive to a storage account.
• B.Collect the DeviceTelemetry, Connections, and Routes logs.
• C.Collect all metrics.
• D.From the Diagnostics settings of the IoT hub, select Send to Log Analytic.
• E.Collect the JobsOperations, DeviceStreams, and FileUploadOperations logs.

Correct Answer: B,D

The IoT Hub resource logs connections category emits operations and errors having to do with device connections. The following screenshot shows a diagnostic setting to route these logs to a Log Analytics workspace:

Note: Azure Monitor: Route connection events to logs:
IoT hub continuously emits resource logs for several categories of operations. To collect this log data, though, you need to create a diagnostic setting to route it to a destination where it can be analyzed or archived. One such destination is Azure Monitor Logs via a Log Analytics workspace, where you can analyze the data using Kusto queries.
Reference:
https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-troubleshoot-connectivity

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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?

• A.the registration ID of the enrollment
• B.the primary key of the enrollment
• C.the device identity of the IoT hub
• D.the hostname of the IoT hub

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You have the following device twin for the IoT device.

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

Correct Answer:

Explanation

Box1: Yes
Box 2: Yes
Fanspeed 73 is a reported property.
Box 3: No
The deviceID property is read only.
Reference:
https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-devguide-device-twins

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You have an Azure subscription that contains the following Azure loT hub:
* Name: Hub1
* Tien SI
* Number of units: 14
The subscription has the tiers and unit costs shown in the following table.

You have 60 loT devices that connect to Hub1. Each loT device sends a single 1-KB message to Hub1 per second. For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.

Correct Answer:

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