At which test level would performance testing most likely be performed? 1 credit [K2]

Question

Options

• AComponent Testing
• BIntegration Testing
• CSystem Testing
• DUser Acceptance Testing

• A
  8% (3)
• C
  90% (36)
• D
  3% (1)

Explanation

System Testing is the correct level because performance testing evaluates how the entire, fully integrated system behaves under load, stress, and real-world conditions - and that complete system only exists at the system test level.

Why the distractors are wrong:

• A. Component Testing - tests individual units in isolation; you cannot measure system-wide performance (throughput, response time, bottlenecks) on a single component.
• B. Integration Testing - verifies that components communicate correctly, but the full system isn't yet assembled, so realistic performance measurement isn't possible.
• D. User Acceptance Testing - focuses on validating business requirements and user workflows, not on measuring technical performance characteristics.

Memory tip: Think of performance testing as needing the "full picture" - just like you can't time a car's top speed by testing one wheel. System Testing is the first level where you have the complete, realistic environment needed to measure that speed.

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