Try Cloudera : CDP-3002 valid & accurate questions and answers
Updated: Sep 06, 2025
No. of Questions: 320 Questions & Answers with Testing Engine
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Cloudera CDP Data Engineer - Certification Sample Questions:
1. What does setting the Spark configuration parameter spark.sql.shuffle.partitions impact?
A) The memory allocation for executor instances
B) The compression codec used for shuffle files
C) The default level of parallelism for joins and aggregations
D) The serialization format of data
2. You're building a large and complex ETL pipeline with numerous tasks and dependencies. What are some best practices to ensure its maintainability and understandability?
A) Implement extensive logging within each task to capture detailed execution information.
B) All of the above
C) Use clear and descriptive names for tasks, operators, variables, and DAG comments throughout the code.
D) Break down the pipeline into smaller, modular sub-DAGs with well-defined functionalities.
3. Discuss the trade-offs between using wide tables (many columns) and narrow tables (few columns) in Spark and the implications for data processing efficiency.
A) Wide tables offer better performance for filtering operations, while narrow tables excel in aggregations.
B) Both A and C.
C) Spark can optimize data access patterns for both wide and narrow tables equally.
D) Wide tables require more storage and may lead to performance overhead due to data serialization.
4. Which component of the Cloudera Data Engineering service is responsible for managing and scheduling data pipelines?
A) Cloudera Manager
B) Cloudera Navigator
C) Cloudera Scheduler
D) CDH Management Console
5. You're working with a complex DataFrame containing nested structures (e.g., arrays of structs). How can you access and manipulate data within these nested structures?
A) Implement custom recursive functions to navigate through the nested structure
B) Leverage Spark SQL's built-in functions like explode and struct
C) Convert the nested data into a simpler format like a single-level DataFrame
D) Directly access elements using their position within the nested structure
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: B | Question # 3 Answer: B | Question # 4 Answer: C | Question # 5 Answer: B |
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