Which of the following commands can you use on the Dataflow monitoring console to stop the pipeline job?

You have a job that you want to cancel. It is a streaming pipeline, and you want to ensure that any data that is in-flight is processed and written to the output.

Which of the following commands can you use on the Dataflow monitoring console to stop the pipeline job?
A . Cancel
B . Drain
C . Stop
D . Finish

Answer: B

Explanation:

Using the Drain option to stop your job tells the Dataflow service to finish your job in its current state. Your job will immediately stop ingesting new data from input sources, but the Dataflow service will preserve any existing resources (such as worker instances) to finish processing and writing any buffered data in your pipeline.

Reference: https://cloud.google.com/dataflow/pipelines/stopping-a-pipeline