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Cloudera CDP-3002 Exam Syllabus Topics:

Cloudera CDP Data Engineer - Certification Sample Questions:

Question 1

A data engineer needs to query a table stored in Apache Hive using SparkSQL. Which of the following commands correctly retrieves data from a Hive table named 'sales data'?

A.

B.

C.

D.

Question 2

Considering the dynamic nature of data workloads, how can Spark's dynamic resource allocation feature impact caching strategies?

A. By encrypting cached data to enhance security when reallocating resources dynamically.
B. By increasing the memory available for caching as the data workload increases, without manual intervention.
C. By potentially evicting cached data when executors are removed due to reduced workload, affecting performance.
D. By automatically persisting all cached data to disk to prevent data loss during node decommissioning.

Question 3

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

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

Question 4

Describe how you would implement a data lineage solution within the Cloudera Data Engineering service to track the origin and flow of data throughout your data pipelines.

A. Utilize custom scripting to track data movement between pipeline steps.
B. Integrate the service with a separate third-party lineage tracking tool.
C. Manually document data lineage within the YAML configuration files.
D. Leverage the integrated lineage tracking capabilities of the Cloudera Data Engineering service.

Question 5

In a distributed environment like Apache Spark, under what conditions might a sort merge join perform more efficiently than a broadcast join?

A. When one of the datasets is significantly larger than the other, and broadcasting the smaller dataset would lead to excessive memory usage.
B. When both datasets are small enough to fit into the memory of a single node.
C. When both datasets are large, roughly equal in size, and already partitioned on the join key.
D. Whenever there is sufficient network bandwidth to handle data shuffling.

Solutions: