Which of the types of defects that are displayed in the exhibit use case testing MOST LIKELY to uncover?

Question

Options

• Aii, iii.
• Bi, iii.
• Ciii, iv.
• Di, ii
• IDefects in the process flow during real-world use of the system.

• A
  3% (1)
• B
  71% (22)
• C
  3% (1)
• D
  6% (2)
• I
  16% (5)

Explanation

Use case testing simulates real-world user scenarios end-to-end, making it ideal for catching process flow defects (i) - errors in how the system behaves across a sequence of user interactions - and integration defects (iii) - failures at the boundaries between components that only surface when the system is exercised as a whole.

Why the distractors are wrong:

• A (ii, iii) is wrong because defect type ii (unit/component-level defects) is best caught by unit testing, not use case testing, which operates at a higher abstraction level.
• C (iii, iv) is wrong because defect type iv (typically performance or security defects) requires dedicated testing techniques (load testing, penetration testing) rather than scenario-based use case testing.
• D (i, ii) is wrong for the same reason as A - unit defects are outside the scope of use case testing.

Memory tip: Think of use case testing as "following the user's journey." It finds defects in the path (process flow) and at the bridges (integration points) - but it won't dig into individual components or measure system stress.

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