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Which of the following is the correct order of testing levels from smallest to largest scope?

easy📝 Syntax Q12 of 15
Testing Fundamentals - Testing Types and Levels
Which of the following is the correct order of testing levels from smallest to largest scope?
ASystem Testing -> Integration Testing -> Unit Testing
BUnit Testing -> Integration Testing -> System Testing
CIntegration Testing -> Unit Testing -> System Testing
DAcceptance Testing -> System Testing -> Unit Testing
Step-by-Step Solution
Solution:

  1. Step 1: Identify scope sizes

    Unit testing checks smallest parts, integration testing checks combined parts, system testing checks whole system.

  2. Step 2: Arrange from smallest to largest

    Correct order is Unit Testing, then Integration Testing, then System Testing.

  3. Final Answer:

    Unit Testing -> Integration Testing -> System Testing -> Option B

  4. Quick Check:

    Smallest to largest = A [OK]
Quick Trick: Remember: Unit, Integration, System order [OK]
Common Mistakes:
  • Reversing the order of testing levels
  • Confusing integration with system testing
  • Including acceptance testing in the wrong place

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