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Databricks Certified Associate Developer for Apache Spark 3.0 (Databricks-Certified-Associate-Developer-for-Apache-Spark-3.0) - Databricks Exam Questions

Last updated on June 20, 2026

97% Exam Compliance
180 Total Questions
1
Question
Which of the following code blocks returns a DataFrame where columns predError and productId are removed from DataFrame transactionsDf?

Sample of DataFrame transactionsDf:

1. +-------------+---------+-----+-------+---------+----+

2. |transactionId|predError|value|storeId|productId|f |

3. +-------------+---------+-----+-------+---------+----+

4. |1 |3 |4 |25 |1 |null|

5. |2 |6 |7 |2 |2 |null|

6. |3 |3 |null |25 |3 |null|

7. +-------------+---------+-----+-------+---------+----+
A. transactionsDf.withColumnRemoved("predError", "productId")
Options
A transactionsDf.drop(["predError", "productId", "associateId"])
B transactionsDf.drop("predError", "productId", "associateId")
C transactionsDf.dropColumns("predError", "productId", "associateId")
D transactionsDf.drop(col("predError", "productId"))
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2
Question
The code block shown below should return a one-column DataFrame where the column storeId is converted to string type. Choose the answer that correctly fills the blanks in the code block to accomplish this. transactionsDf.__1__(__2__.__3__(__4__))
Options
A 1. select
2. col("storeId")
3. as
4. StringType
B 1. select
2. col("storeId")
3. cast
4. StringType()
C 1. select
2. col("storeId")
3. cast
4. StringType
D 1. select
2. storeId
3. cast
4. StringType()
E 1. cast
2. "storeId"
3. as
4. StringType()
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3
Question
Which of the following statements about stages is correct?
Options
A Stages consist of one or more jobs.
B Different stages in a job may be executed in parallel.
C Stages may contain multiple actions, narrow, and wide transformations.
D Stages ephemerally store transactions, before they are committed through actions.
E Tasks in a stage may be executed by multiple machines at the same time.
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4
Question
Which of the following statements about Spark's configuration properties is incorrect?
Options
A The maximum number of tasks that an executor can process at the same time is controlled by the spark.executor.cores property.
B The maximum number of tasks that an executor can process at the same time is controlled by the spark.task.cpus property.
C The default value for spark.sql.autoBroadcastJoinThreshold is 10MB.
D The default number of partitions to use when shuffling data for joins or aggregations is 300.
E The default number of partitions returned from certain transformations can be controlled by the spark.default.parallelism property.
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5
Question
Which of the following code blocks returns a copy of DataFrame itemsDf where the column supplier has been renamed to manufacturer?
Options
A itemsDf.withColumn(["supplier", "manufacturer"])
B itemsDf.withColumnRenamed("supplier", "manufacturer")
C itemsDf.withColumn("supplier").alias("manufacturer")
D itemsDf.withColumnsRenamed("supplier", "manufacturer")
E itemsDf.withColumnRenamed(col("manufacturer"), col("supplier"))
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