You are designing a solution to ingest data streams that will be captured in real-time and processed with the least latency. You should be able to communicate in two ways. Which of the options is suitable for real-time message ingestion in this case?

Answer options:

A.Azure Event Hub
B.Azure IOT Hub
C.Kafka on HDinsight
D.None of the above

Correct Answer: B
When you want to establish a two-way communication connection, Kafka HDInsight and Azure Event Hub will not be the right choice as they don’t have this capability. Options A and C are incorrect: Because two-way communication or cloud-to-device communication capability is not available for Azure Event hub or Kafka HDInsight.
Option B is correct: Azure IOT hub supports not only the two communication, but also the capability it manages/revokes the access of individual devices.
Reference: To know more, please refer to the docs below: 

https://docs.microsoft.com/en-us/azure/architecture/data-guide/technology-choices/real-time-ingestion#capability-matrix