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Output Equivalence Partitions

publish date: 2026/06/17 05:49:38.610750 UTC

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Which statement correctly describes output equivalence partitions?

Output partitions only apply to systems that produce numeric results

Output partitions are groups of outputs that have something in common, and may require their own separate input partitions

Output partitions are always identical to input partitions in a 1:1 mapping

Output partitions can only be defined after running all input partition tests

Correct Answer

Output partitions are groups of outputs that have something in common, and may require their own separate input partitions

Explanation

Output equivalence partitions are partitions within which all outputs have something in common. While there is sometimes a 1:1 mapping between input and output partitions, this is not always the case. You may need to define a separate input equivalence partition where the only common characteristic of the inputs is that they generate outputs within the same output partition.

Reference

Software Engineering, Ian Sommerville, 10th edition

Quizzes you can take where this question appears

Choosing Unit Test Cases - Partition Testing