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Why is integration testing considered critical before system testing?

hard🧠 Conceptual Q10 of Q15
Testing Fundamentals - Testing Types and Levels
Why is integration testing considered critical before system testing?
AIt replaces the need for unit testing.
BIt ensures modules work together correctly, preventing system-level failures.
CIt tests the user interface thoroughly.
DIt is done after system testing to confirm results.
Step-by-Step Solution
Solution:

  1. Step 1: Understand testing order and purpose

    Integration testing verifies module interactions before full system testing.

  2. Step 2: Identify importance

    Ensuring modules work together prevents failures during system testing.

  3. Final Answer:

    It ensures modules work together correctly, preventing system-level failures. -> Option B

  4. Quick Check:

    Integration testing prevents system failures [OK]
Quick Trick: Integration testing catches module interaction issues early [OK]
Common Mistakes:
MISTAKES
  • Confusing integration with unit or system testing
  • Misunderstanding testing sequence

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