Stella works as a system engineer for BlueWell Inc. She wants to identify the performance thresholds of each build. Which of the following tests will help Stella to achieve her task?

Question

Options

• ARegression test
• BReliability test
• CFunctional test
• DPerformance test

• B
  4% (1)
• D
  96% (24)

Explanation

Performance testing (D) directly measures how a system behaves under various workloads - capturing metrics like response time, throughput, and resource utilization at different load levels, which is exactly how Stella identifies performance thresholds for each build.

• A (Regression) is wrong because regression tests verify that new changes haven't broken existing functionality - they catch defects, not performance boundaries.
• B (Reliability) is wrong because reliability tests assess whether a system consistently performs its function over time without failure, not where its performance limits lie.
• C (Functional) is wrong because functional tests confirm that features work correctly per requirements - they validate what the system does, not how fast or efficiently it does it.

Memory tip: Think "performance = thresholds." Any time a question mentions load limits, response time benchmarks, or capacity boundaries, performance testing is the answer - it's the only type specifically designed to find where a system starts to degrade.

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