Your question is Spark Data Distribution Basics. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
You're reviewing a distributed data pipeline and want to confirm how Spark actually executes work across a cluster before optimizing jobs.
How does Apache Spark distribute data across a cluster? Explain the difference between transformations and actions.