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

1. What is a privacy regulation that aims to protect the personal data of European Union citizens?

A) FERPA
B) GDPR
C) CCPA
D) HIPAA

2. What is the main programming language supported by Apache Spark?

A) Python
B) C++
C) Java
D) Ruby

3. What skill is essential for a data engineer to efficiently transform and clean raw data into usable formats?

A) Machine learning
B) ETL (Extract, Transform, Load) processes
C) Data visualization
D) Data warehousing

4. In a relational database, what is a minimal set of attributes to uniquely identify a record in a table?

A) Primary key
B) Candidate key
C) Foreign key
D) Super key

5. With Apache Kafka, what is an advantage of implementing the Publish/Subscribe messaging system over Point-to-Point messaging system?

A) Messages stored are deduplicated automatically to increase the overall storage capacity of a topic
B) Any message published to a topic is received only by a few subscribers to that topic
C) Messages can be dynamically moved between topics to improve the overall throughput of the system
D) Any message published to a topic is immediately received by all the subscribers to that topic

Solutions: