Apache Spark quiz

Test your Apache Spark knowledge with a free interactive quiz — 51 questions with answers and explanations. No signup needed to play.

What does it mean that Spark transformations are "lazy"?

1. What does it mean that Spark transformations are "lazy"?
2. What does spark.read.csv("file.csv") return?
3. What does .show() do on a DataFrame?
4. Which of the following is a transformation, not an action?
5. What is the purpose of df.printSchema()?
6. What is the purpose of the .explain() method on a DataFrame?
7. What is the role of the Spark driver?
8. What is Apache Spark?
9. What is a cluster manager in the Spark architecture?
10. What triggers an actual Spark job to run?
11. What is Spark SQL?
12. Which file format is generally preferred for Spark data that will be read multiple times?

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