Databricks Certified Associate Developer for Apache Spark
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| Question | Action |
|---|---|
| Which of the following DataFrame operations is considered a wide transformation? | |
| Which of the following options correctly describes the Spark driver in Apache Spark? | |
| Identify the error in the following code block intended to return the exact number of distinct values in the `division` column of DataFrame `storesDF` ... | |
| Which of the following code blocks correctly counts the number of rows in DataFrame `storesDF` for each unique combination of values in the columns `d ... | |
| Identify the error in the following code block intended to return summary statistics for the column `sqft` in DataFrame `storesDF`: Code block: ```py ... | |
| Display the schema of DataFrame `storesDF` by completing the numbered blanks in the code snippet below: Code block: __1__.__2__ | |
| The following code block should extract the integer value for column `sqft` from the first row of DataFrame `storesDF`. Select the answer that correct ... |