Free Databricks Databricks-Certified-Associate-Developer-for-Apache-Spark-3.0 Exam Questions
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Databricks Databricks-Certified-Associate-Developer-for-Apache-Spark-3.0 Exam Questions
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Provided By: Databricks
- Exam: Databricks Certified Associate Developer for Apache Spark 3.0
- Certification: Apache Spark Associate Developer
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Total Questions: 420
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Updated On: Nov 14, 2024
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Rated: 4.9 |
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Online Users: 840
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Question 1
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The code block shown below should return a DataFrame with two columns, itemId and col. In this DataFrame,for each element in column attributes of DataFrame itemDf there should be a separaterow in which the column itemId contains the associated itemId from DataFrame itemsDf. The new DataFrameshould only contain rows for rows in DataFrame itemsDf in which the column attributescontains the element cozy.A sample of DataFrame itemsDf is below.Code block:itemsDf.__1__(__2__).__3__(__4__, __5__(__6__))
Answer: A
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The code block shown below should return a DataFrame with two columns, itemId and col. In this DataFrame,
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Question 2
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The code block shown below should return a column that indicates through boolean variables whether rows in
DataFrame transactionsDf have values greater or equal to 20 and smaller or equal to 30 in column storeId and have the value 2 in column productId. Choose the answer that correctly fills theblanks in the code block to accomplish this.transactionsDf.__1__((__2__.__3__) __4__ (__5__))
Answer: D
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The code block shown below should return a column that indicates through boolean variables whether rows in
DataFrame transactionsDf have values greater or equal to 20 and smaller or equal to 30 in column storeId and have the value 2 in column productId. Choose the answer that correctly fills the
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Question 3
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Choose the correct code block to unpersist a table named ‘table’.
Answer: C
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Choose the correct code block to unpersist a table named ‘table’.
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Question 4
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Which of the following code blocks reads in the JSON file stored at filePath, enforcing the schema expressedin JSON format in variable json_schema, shown in the code block below?Code block:1.json_schema = """2.{"type": "struct",3. "fields": [4. {5. "name": "itemId",6. "type": "integer",7. "nullable": true,8. "metadata": {}9. },10. {11. "name": "supplier",12. "type": "string",13. "nullable": true,14. "metadata": {}15. }16. ]17.}18."""
Answer: B
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Question 5
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Which of the following code blocks reads from a csv file where values are separated with ‘;’ ?
Answer: C
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Which of the following code blocks reads from a csv file where values are separated with ‘;’ ?