Correct Answer: Disable or delete the enrollment entry in DPS, and disable or delete the device identity in the IoT Hub registry
To block a device permanently, you must delete or disable the enrollment record in DPS to prevent future reprovisioning, and delete or disable the device identity in the IoT Hub re...
Correct Answer
Disable or delete the enrollment entry in DPS, and disable or delete the device identity in the IoT Hub registry
Why This Answer Is Correct
To block a device permanently, you must delete or disable the enrollment record in DPS to prevent future reprovisioning, and delete or disable the device identity in the IoT Hub registry to block connections using existing credentials.
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 manufacturing IoT devices that will be shipped globally and deployed in customer environments. You do not know which IoT Hub the device should connect to at manufacture time. You need zero-touch provisioning at customer deployment. Which service enables this?
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?