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You have an Azure Stream Analytics job that connects to an Azure IoT hub named Hub1445 as a streaming data source. Hub1445 is configured as shown in the exhibit. (Click the Exhibit tab.) The Stream Analytics job fails to receive any messages from the IoT hub. What should you do to resolve the issue?
Correct Answer: A
Explanation The device telemetry is usually passed as JSON from the device through the IoT Hub - this is handled nicely by Azure Streaming Analytics queries. The IoT Hub message routing should be configured as follows: Data source: Device Telemetry Messages Routing query: true (as the routing query is an expression that evaluates to true or false for each received message, the simplest way to send all messages to the endpoint is to just supply true as the query). Reference: https://darenmay.com/blog/azure-iot-streaming-analytics-data-lake-analytics-and-json/