Databricks Certified Associate Developer for Apache Spark 3.5 - Python - Associate-Developer-Apache-Spark-3.5 Exam Practice Test
A Data Analyst needs to retrieve employees with 5 or more years of tenure.
Which code snippet filters and shows the list?
Which code snippet filters and shows the list?
Correct Answer: B
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A data engineer is building a Structured Streaming pipeline and wants the pipeline to recover from failures or intentional shutdowns by continuing where the pipeline left off.
How can this be achieved?
How can this be achieved?
Correct Answer: C
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6 of 55.
Which components of Apache Spark's Architecture are responsible for carrying out tasks when assigned to them?
Which components of Apache Spark's Architecture are responsible for carrying out tasks when assigned to them?
Correct Answer: C
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24 of 55.
Which code should be used to display the schema of the Parquet file stored in the location events.parquet?
Which code should be used to display the schema of the Parquet file stored in the location events.parquet?
Correct Answer: B
Explanation: Only visible for TrainingDump members. You can sign-up / login (it's free).
26 of 55.
A data scientist at an e-commerce company is working with user data obtained from its subscriber database and has stored the data in a DataFrame df_user.
Before further processing, the data scientist wants to create another DataFrame df_user_non_pii and store only the non-PII columns.
The PII columns in df_user are name, email, and birthdate.
Which code snippet can be used to meet this requirement?
A data scientist at an e-commerce company is working with user data obtained from its subscriber database and has stored the data in a DataFrame df_user.
Before further processing, the data scientist wants to create another DataFrame df_user_non_pii and store only the non-PII columns.
The PII columns in df_user are name, email, and birthdate.
Which code snippet can be used to meet this requirement?
Correct Answer: B
Explanation: Only visible for TrainingDump members. You can sign-up / login (it's free).
What is the behavior for function date_sub(start, days) if a negative value is passed into the days parameter?
Correct Answer: A
Explanation: Only visible for TrainingDump members. You can sign-up / login (it's free).
30 of 55.
A data engineer is working on a num_df DataFrame and has a Python UDF defined as:
def cube_func(val):
return val * val * val
Which code fragment registers and uses this UDF as a Spark SQL function to work with the DataFrame num_df?
A data engineer is working on a num_df DataFrame and has a Python UDF defined as:
def cube_func(val):
return val * val * val
Which code fragment registers and uses this UDF as a Spark SQL function to work with the DataFrame num_df?
Correct Answer: C
Explanation: Only visible for TrainingDump members. You can sign-up / login (it's free).