Spark and Scala quiz medium level

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Test description

Designed for Big Data Developers, this quiz allows you to test knowledge and theory about what Spark does, how it works and what it is used for.
Topics: Spark Data Structures (general questions, about how Spark handles data structures and distributed data), Spark Code samples and data manipulation.

Sample questions

1 Which of the following is considered the main gain of Spark over Map Reduce?