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

1. 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) Ensuring the successful initiation, planning, design, execution, monitoring, controlling, and closure of the project
C) Installing, configuring, testing, and maintaining operating systems, application software, and system management tools
D) Designing and integrating infrastructure, analyzing algorithms, modifying source code, and writing system instructions

2. Which characteristic of a relational database ensures that each row in a table is uniquely identifiable?

A) Joins
B) Indexing
C) Foreign key
D) Primary key

3. What is the storage architecture of Pravega?

A) In-memory storage
B) Columnar storage
C) Object-based storage
D) File-based storage

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

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

5. What is the primary advantage of using dictionaries in Python data pipelines?

A) Dictionaries maintain element order
B) Dictionaries allow duplicate values
C) Dictionaries support mathematical operations
D) Dictionaries offer O(1) lookup time

Solutions: