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

1. You are designing a database for an e-commerce data warehouse. The data is normalized in 1NF format and will be used to create data marts for different departments inside the organization.
Which schema type should be used for this requirement?

A) Highly Normalized
B) Graph
C) Star
D) Columnar

2. What is the purpose of Apache Airflow?

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

3. What is a primary task of a data engineer during a data analytics project?

A) Preparing the Big Data environment to be utilized by data scientists and other business stakeholders
B) Designing and integrating infrastructure, analyzing algorithms, modifying source code, and writing system instructions
C) Ensuring the successful initiation, planning, design, execution, monitoring, controlling, and closure of the project
D) Installing, configuring, testing, and maintaining operating systems, application software, and system management tools

4. In Python, which primitive data type covers real rational and irrational numbers?

A) Float
B) Boolean
C) Integer
D) String

5. In a data analytics project, what is the primary responsibility of a data engineer?

A) Conducting statistical analysis
B) Creating data visualizations
C) Designing machine learning models
D) Building data pipelines and ETL processes

Solutions: