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Cloudera CDP Data Engineer - Certification Sample Questions:

1. Which of the following commands is used to install PySpark in your development environment?

A) brew install pyspark
B) npm install pyspark
C) yarn add pyspark
D) pip install pyspark

2. In a PySpark application running on Kubernetes, you want to enable dynamic allocation of Executors. Which configuration setting is essential to turn on this feature?

A) 'spark.kubernetes.executor.dynamicAllocation'
B) 'spark.executor.instances'
C) 'spark.dynamicAllocation.enabled'
D) 'spark.kubernetes.dynamicAllocation.enabled'

3. How can you utilize Spark SQL for complex data analysis involving joins and aggregations on large datasets?

A) Both A and B.
B) By using Spark ML libraries for machine learning tasks on data.
C) By directly writing SQL queries against distributed data in Spark.
D) By implementing custom logic in RDDs for data manipulation.

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

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

5. A data engineer is deploying a Spark application on a Kubernetes cluster. To minimize downtime during updates, which Kubernetes deployment strategy should be considered?

A) Rolling Updates
B) Pod Autoscaling
C) Node Affinity
D) Persistent Volumes

Solutions: