Correct Answer: IoT Hub Direct Method with a configured timeout
Direct Methods provide a synchronous request-response mechanism for invoking actions on a device. You can configure a timeout (up to 300 seconds). If the device does not respond wi...
Correct Answer
IoT Hub Direct Method with a configured timeout
Why This Answer Is Correct
Direct Methods provide a synchronous request-response mechanism for invoking actions on a device. You can configure a timeout (up to 300 seconds). If the device does not respond within the timeout, the hub returns an error. This is the correct pattern for immediate, time-sensitive commands requiring confirmation.
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?
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Your IoT solution requires sending a firmware binary to 10,000 devices simultaneously over the next 24 hours. Each device must receive the same file. Which IoT Hub capability is designed for this at-scale operation?
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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?