Correct Answer: Use IoT Hub Jobs to schedule a direct method call on all 10,000 devices
IoT Hub Jobs allow you to schedule direct method calls or twin updates across multiple devices simultaneously. Jobs track progress across all devices and handle retries. This is th...
Correct Answer
Use IoT Hub Jobs to schedule a direct method call on all 10,000 devices
Why This Answer Is Correct
IoT Hub Jobs allow you to schedule direct method calls or twin updates across multiple devices simultaneously. Jobs track progress across all devices and handle retries. This is the correct tool for large-scale, coordinated operations like triggering a firmware update method across 10,000 devices.
This question evaluates your knowledge of Azure IoT Hub — a core concept tested in Microsoft Certified: Azure IoT Developer Specialty (AZ-220). Understanding Azure IoT Hub 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 building an IoT solution where 50,000 devices must send telemetry every 30 seconds. Your IoT Hub is receiving messages but you are hitting throttling errors. Which action should you take first?
A field device needs to receive configuration updates from the cloud and report its current state back. The configuration properties are set by the backend and the device reports its actual state. Which IoT Hub feature is designed for this pattern?
You need to invoke a firmware update on a specific device immediately and wait for a response to confirm it started. The operation must complete within 30 seconds or be considered failed. Which IoT Hub feature should you use?
Your IoT devices need to upload 50 MB diagnostic log files to the cloud periodically. Using IoT Hub device-to-cloud messages is not suitable due to the 256 KB size limit. What is the correct IoT Hub capability for this?
Your IoT Hub receives messages from both temperature sensors and pressure sensors. Temperature messages have a custom property 'sensorType=temperature'. You need to route temperature messages to Azure Blob Storage and pressure messages to a Service Bus Queue, without duplicating messages. How do you configure this?