Microsoft Exam AZ-220 Topic 2 Question 49 Discussion

Actual exam question for Microsoft's AZ-220 exam

Question #: 49
Topic #: 2

You have 1,000 devices that connect to a standard tier Azure IoT hub.

All the devices are commissioned and send telemetry events to the built-in IoT Hub endpoint. You configure message enrichment on the events endpoint and set the enrichment value to $twin.tags.ipV4.

When you inspect messages on the events endpoint, you discover that all the messages are stamped with a string of "$twin.tags.ipV4".

What are two possible causes of the issue? Each Answer presents a complete solution.

NOTE: Each correct selection is worth one point.

AThe ipV4 tag is a restricted twin property that is unavailable for message enrichment.

BA standard tier IoT hub does not support device twin properties in message enrichments.

CThe device sending the message has no device twin.

DMessage enrichment cannot be added to messages going to a built-in endpoint.

EThe device twin path used for the value of the enrichment does not exist.

FThe device twin property value used for message enrichment is set to '$twin.tags.ipV4'.

Show Suggested Answer

Suggested Answer: A, C

Microsoft.Devices.DeviceCreated: Published when a device is registered to an IoT hub.

The first thing you want to do is handle Microsoft.EventGrid.SubscriptionValidationEvent events. Every time someone subscribes to an event, Event Grid sends a validation event to the endpoint with a validationCode in the data payload.

https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-event-grid

https://docs.microsoft.com/en-us/azure/event-grid/receive-events

by Timothy at Jan 08, 2023, 04:47 AM

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