Databricks Certified Associate Developer for Apache Spark — Question 5

Which of the following describes the relationship between nodes and executors?

Answer options

• A. Executors and nodes are not related.
• B. Anode is a processing engine running on an executor.
• C. An executor is a processing engine running on a node.
• D. There are always the same number of executors and nodes.
• E. There are always more nodes than executors.

Correct answer: C

Explanation

The correct answer is C because an executor acts as a processing engine that runs on a node. Option A is incorrect as it asserts no relation exists, while B misrepresents the roles, and D and E incorrectly state the relationship between counts of nodes and executors.