It has been suggested to organize a performance test to find out more regarding the third risk. Which of the following would you use to quantify the situation and as a basis for defining a…

Question

Options

• ADefect analysis time
• BChange parameter success ratio
• CNumber of errors made by the user
• DTime to perform the function

• A
  11% (3)
• B
  4% (1)
• C
  4% (1)
• D
  81% (22)

Explanation

Time to perform the function (D) is the correct answer because performance testing is fundamentally about measuring how fast a system executes tasks under defined conditions. "Time to perform the function" is a directly measurable, objective metric that can be compared against a threshold (e.g., "login must complete within 2 seconds under peak load"), making it ideal for both quantifying the performance risk and defining a clear exit criterion.

Why the distractors are wrong:

• A (Defect analysis time) - This is a process/management metric measuring how long it takes teams to analyze bugs, not how the system itself performs.
• B (Change parameter success ratio) - This relates to configuration or change management outcomes, not to system speed or throughput.
• C (Number of errors made by the user) - This is a usability metric, measuring how error-prone the interface is, not how fast the system responds.

Memory tip: Associate "performance" with "speed," and speed always comes back to time. If a test type has "performance" in its name, the primary exit criterion will almost always be time-based (response time, execution time, throughput measured per unit time).

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