Certified Associate Developer for Apache Spark Dataframe Practice Questions
The free Certified Associate Developer for Apache Spark questions that deal with dataframe, with answers and explanations. The full bank and the timed practice test cover every topic the exam asks about.
Question #2
If you need to transform a DataFrame in Spark, which operation would you use?
Correct answer: D
Explanation
The filter() operation allows you to filter rows in a DataFrame based on a specified condition.
Question #7
In which scenario should you prefer using a DataFrame over an RDD?
Correct answer: C
Explanation
DataFrames are optimized for structured data, providing various built-in functions for data manipulation and analysis, making them preferable over RDDs in such cases.
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