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Cloudera CDP-3002 Exam Syllabus Topics:

Cloudera CDP Data Engineer - Certification Sample Questions:

1. What is the best practice for handling DAG dependencies in Apache Airflow when one DAG's output is another DAG's input?

A) Manually trigger the dependent DAG after the first DAG completes.
B) Use the TriggerDagRunOperator to trigger one DAG from another upon completion.
C) Use the ExternalTaskSensor to wait for a task in another DAG to complete.
D) Directly call one DAG from another using the PythonOperator.

2. An Iceberg job fails with an "out of memory" error. Which Spark configuration changes might help? (Choose two)

A) Upgrade to a larger Kubernetes pod size.
B) Increase executor memory (spark.executor.memory)
C) Enable Spark broadcast joins
D) Increase driver memory (spark.driver.memory)
E) Decrease the size of Spark partitions (spark.sql.shuffle.partitions)

3. When creating a partitioned table in Hive, what does the clause PARTITIONED BY specify?

A) The default file format for data storage
B) The replication factor for the HDFS data blocks
C) The compression algorithm used for data storage
D) The column(s) used to divide the table into partitions

4. You encounter an error message stating "Task timed out" while running your Airflow DAG. What are some potential causes and how can you troubleshoot them?

A) The extraction task is encountering issues connecting to the source system.
B) All of the above
C) The data processing task is taking longer than the configured timeout for the task.
D) The DAG is running too frequently, overloading the system resources.

5. You're working with an Airflow DAG that performs data quality checks on sensitive dat a. How can you ensure data security during the checks?

A) Utilize environment variables to store sensitive data and access them within the PythonOperator.
B) All of the above
C) Implement data masking techniques to obfuscate sensitive information during the checks.
D) Store sensitive data like thresholds and comparison values directly within the DAG code.

Solutions: