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Cloudera CDP Data Engineer - Certification Sample Questions:

1. When deploying a packaged PySpark application using 'spark-submit', which option is used to include the packaged dependencies?

A) --py-files
B) --packages
C) -files
D) --jars

2. How can you monitor the storage level and usage of persisted RDDs in your Spark application?

A) All of the above
B) Manually analyze the Spark application code
C) Leverage Spark metrics like rdd.getStorageLevel() and rdd.getPersistedSize()
D) Use Spark's web UI and look for information under the "Storage" tab

3. Which of the following is TRUE about using Explain Plans for performance tuning?

A) They can help identify operations that may become performance bottlenecks
B) They are only useful for queries that involve joins
C) They provide detailed network latency information
D) Explain Plans always show the actual runtime of a query

4. In Airflow, what is a Hook used for?

A) To visualize task execution and logs
B) To retry failed tasks automatically
C) To define the execution order of tasks
D) To connect to external systems and databases

5. You're tasked with monitoring the performance and resource utilization of your Spark jobs. What tools and techniques can you employ for effective monitoring and troubleshooting?

A) Manually analyze Spark logs after job completion
B) Leverage YARN resource manager and Spark metrics for detailed monitoring
C) Use Spark's web UI for basic job status information
D) Implement custom instrumentation code within your Spark application

Solutions: