Correct Answer: Configure the edgeHub module to use store-and-forward with a time-to-live setting
The IoT Edge hub module (edgeHub) has built-in store-and-forward capability. When connectivity to IoT Hub is lost, edgeHub stores messages locally up to a configured time-to-live (...
Correct Answer
Configure the edgeHub module to use store-and-forward with a time-to-live setting
Why This Answer Is Correct
The IoT Edge hub module (edgeHub) has built-in store-and-forward capability. When connectivity to IoT Hub is lost, edgeHub stores messages locally up to a configured time-to-live (TTL). When connectivity resumes, it automatically forwards stored messages upstream, enabling seamless offline operation.
This question evaluates your knowledge of Azure IoT Edge — a core concept tested in Microsoft Certified: Azure IoT Developer Specialty (AZ-220). Understanding Azure IoT Edge 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 have an Azure IoT Edge device deployed at a factory. A custom module processes sensor data and should forward only anomaly alerts to IoT Hub to minimize bandwidth. Normal readings should be discarded at the edge. How do you configure this routing?
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You need legacy devices without native IoT SDK support to connect to IoT Hub through an IoT Edge device. Each legacy device should appear as a separate device identity in IoT Hub. Which IoT Edge gateway pattern should you implement?
You are deploying an IoT Edge solution to 500 devices in a factory. You need to update the deployment manifest for all devices simultaneously whenever a new module version is released. Which approach scales for 500 devices without manual per-device updates?
You need to deploy an IoT Edge custom module that requires access to a hardware device (e.g., /dev/ttyUSB0 for serial communication) on the host gateway. How should you configure this module in the deployment manifest?