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Exam AZ-220 topic 12 question 1 discussion

Actual exam question from Microsoft's AZ-220
Question #: 1
Topic #: 12
[All AZ-220 Questions]

You need to enable telemetry message tracing through the entire IoT solution.
What should you do?

  • A. Monitor device lifecycle events.
  • B. Upload IoT device logs by using the File upload feature.
  • C. Enable the DeviceTelemetry diagnostic log and stream the log data to an Azure event hub.
  • D. Implement distributed tracing.
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Suggested Answer: D 🗳️
IoT Hub is one of the first Azure services to support distributed tracing. As more Azure services support distributed tracing, you'll be able trace IoT messages throughout the Azure services involved in your solution.
Note:
Enabling distributed tracing for IoT Hub gives you the ability to:
✑ Precisely monitor the flow of each message through IoT Hub using trace context. This trace context includes correlation IDs that allow you to correlate events from one component with events from another component. It can be applied for a subset or all IoT device messages using device twin.
✑ Automatically log the trace context to Azure Monitor diagnostic logs.
✑ Measure and understand message flow and latency from devices to IoT Hub and routing endpoints.
✑ Start considering how you want to implement distributed tracing for the non-Azure services in your IoT solution.
Reference:
https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-distributed-tracing
by designtshirt at April 4, 2025, 9:10 a.m.

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