Correct Answer: Use Azure Device Provisioning Service (DPS) with auto-provisioning
Azure Device Provisioning Service (DPS) enables zero-touch, just-in-time provisioning. Devices are loaded with DPS credentials at manufacture time. At first boot, the device connec...
Correct Answer
Use Azure Device Provisioning Service (DPS) with auto-provisioning
Why This Answer Is Correct
Azure Device Provisioning Service (DPS) enables zero-touch, just-in-time provisioning. Devices are loaded with DPS credentials at manufacture time. At first boot, the device connects to DPS, which authenticates it, determines the correct IoT Hub, registers the device, and returns the IoT Hub connection details — all without manual intervention.
This question evaluates your knowledge of Azure Device Provisioning Service — a core concept tested in Microsoft Certified: Azure IoT Developer Specialty (AZ-220). Understanding Azure Device Provisioning Service is essential for designing scalable, secure, and cost-effective cloud architectures. Mastery of this topic will help you answer scenario-based questions confidently on exam day.
You are using Azure DPS with X.509 certificate attestation. You need to provision all devices from the same manufacturer into a specific IoT Hub, while devices from a different manufacturer go to a different IoT Hub. How should you configure DPS?
A device in your fleet was provisioned via DPS but needs to be moved to a different IoT Hub due to a regional migration. You want to reprovision the device without replacing its firmware. What is the correct DPS approach?
You are using DPS with TPM attestation. A device's TPM chip fails and must be replaced. The replacement TPM has a different endorsement key. You need to re-provision the device to the same IoT Hub and preserve its device ID and twin data. What steps are required?
A developer is setting up an individual enrollment in Azure DPS using TPM attestation. What information must be obtained from the physical TPM chip on the device to register it?
You need to implement a dynamic allocation policy in DPS to assign devices to the nearest geographical IoT Hub based on a real-time lookup in a custom database. Which allocation policy should you configure?