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

1. Which of the following data structures in Python is immutable?

A) List
B) Tuple
C) Dictionary
D) Set

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

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

3. Which Python library provides the foundation for SciPy?

A) NLTK
B) scikit-learn
C) NumPy
D) Pandas

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

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

5. Which Cassandra data type represents a collection of key-value pairs, and is represented in curly brackets ({, }) and colon (:)?

A) UUID
B) List
C) Map
D) Set

Solutions: