Exam AZ-220 topic 9 question 1 discussion

Actual exam question from Microsoft's AZ-220

Question #: 1
Topic #: 9

[All AZ-220 Questions]

What should you do to identify the cause of the connectivity issues?

A. Send cloud-to-device messages to the IoT devices.
B. Use the heartbeat pattern to send messages from the IoT devices to iothub1.
C. Monitor the connection status of the device twin by using an Azure function.
D. Enable the collection of the Connections diagnostic logs and set up alerts for the connected devices count metric.

Show Suggested Answer

Suggested Answer: D 🗳️
Scenario: You discover connectivity issues between the IoT gateway devices and iothub1, which cause IoT devices to lose connectivity and messages.
To log device connection events and errors, turn on diagnostics for IoT Hub. We recommend turning on these logs as early as possible, because if diagnostic logs aren't enabled, when device disconnects occur, you won't have any information to troubleshoot the problem with.
Step 1:
1. Sign in to the Azure portal.
2. Browse to your IoT hub.
3. Select Diagnostics settings.
4. Select Turn on diagnostics.
5. Enable Connections logs to be collected.
6. For easier analysis, turn on Send to Log Analytics (see pricing).
Step 2:
Set up alerts for device disconnect at scale
To get alerts when devices disconnect, configure alerts on the Connected devices (preview) metric.
Reference:
https://docs.microsoft.com/bs-cyrl-ba/azure/iot-hub/iot-hub-troubleshoot-connectivity

by angelsrp at July 25, 2020, 1:44 a.m.

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angelsrp

4 years, 10 months ago

i think instead of "Select Turn on diagnostics" now is "Add diagnostic setting". Idk if in the past it was called that way.

upvoted 1 times

angelsrp

4 years, 10 months ago

in the explanation ofc.

upvoted 1 times

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