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

1. Which of the following are components of the ETL process? (Select all that apply)

A) Visualization
B) Transformation
C) Extraction
D) Loading
E) Transmission

2. In an Apache Spark Streaming environment, what acts as an entry point to the streaming system and provides methods to create and transform DStreams?

A) Spark Core
B) Streams API
C) StreamingContext
D) Receiver

3. In Python, which non-primitive data structure can only be a collection of primitive data types?

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

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

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

5. What are two Spark libraries?

A) Spark SQL and GraphX
B) Spark NoSQL and GraphX
C) Spark SQL and RDD
D) Spark NoSQL and RDD

Solutions: