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EMC Dell Data Scientist and Data Engineering Optimize 2023 Sample Questions:

1. Which skill is crucial for a data engineer to effectively manage and optimize large-scale data processing systems?

A) Front-end development
B) Data analysis
C) Cloud computing
D) Graphic design

2. What is a significant advantage of using a columnar store NoSQL database for analytical workloads?

A) Real-time data synchronization
B) Optimized query performance on large datasets
C) High-speed transaction processing
D) Efficient storage of hierarchical data

3. What are three programming languages supported by Apache Spark?

A) Python, R, and Scala
B) Python, R, and C++
C) PL/SQL, R, and Scala
D) Python, C, and Scala

4. What is the purpose of Apache Airflow?

A) Data visualization
B) Data processing
C) Workflow automation
D) Data storage

5. What ethical principle emphasizes that collected data should be used for its original intended purpose?

A) Accountability
B) Transparency
C) Data minimization
D) Purpose limitation

Solutions: