What should you do first?

You have 20 devices that connect to an Azure IoT hub.

You open Azure Monitor as shown in the exhibit. (Click the Exhibit tab.)

You discover that telemetry is not being received from five IoT devices.

You need to identify the names of the devices that are not generating telemetry and visualize the data .

What should you do first?
A . Add the Number of throttling errors metric and archive the logs to an Azure storageaccount.
B . Configure diagnostics for Routes and stream the logs to Azure Event Hubs.
C . Add the Telemetry messages sent metric and archieve the logs to an Azure Storage account.
D . Configure diagnostics for Connections and send the logs to Azure Log Analytics.

View Answer

Answer: D

Explanation:

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.

✑ Sign in to the Azure portal.

✑ Browse to your IoT hub.

✑ Select Diagnostics settings.

✑ Select Turn on diagnostics.

✑ Enable Connections logs to be collected.

✑ For easier analysis, turn on Send to Log Analytics

Reference: https://docs.microsoft.com/bs-cyrl-ba/azure/Iot-hub/iot-hub-troubleshoot-connectivity