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

1. 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 modeling
C) Data ingestion
D) Data exploration

2. A company needs to fill an opening for a key tactical data governance position. The new hire is to be a subject matter expert on customer data and ensure the data policies and standards are adhered to on a daily basis. This role bridges the gap between a data governance program and its execution.
What is a suitable job title for this role?

A) Data scientist
B) Data engineer
C) Data miner
D) Data steward

3. Which NoSQL database type is most suitable for applications requiring high-speed, low-latency data retrieval based on simple lookups?

A) Document store
B) Time-series database
C) Column-family store
D) Key-value store

4. What is a metadata management challenge?

A) Information sources are limited
B) Data corruption over time
C) Ensuring availability of source systems
D) Leveraging the information from distributed sources

5. Which of the following best describes the purpose of database normalization in a relational database schema?

A) Improving query performance
B) Increasing data security
C) Enforcing referential integrity
D) Reducing data redundancy

Solutions: