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

1. What is the purpose of sensor operators in Apache Airflow?

A) Use triggers to report each successive retry
B) Move data sequentially from one system to another
C) Use a poke method to monitor external processes
D) Perform validation checks in parallel

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

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

3. Which phase of a data analytics project involves data engineers extracting, transforming, and loading data from various sources into a centralized repository?

A) Data visualization
B) Data ingestion
C) Data exploration
D) Data modeling

4. Which tools are used for security considerations in the Hadoop ecosystem? (Select all that apply)

A) Apache Atlas
B) Apache Knox
C) Apache Flink
D) Apache Ranger
E) Apache Sentry

5. What step in a query plan determines the best execution path for the provided query?

A) Optimizer
B) Algebrizer
C) Execution
D) Parser

Solutions: