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Why is the Waterfall testing model considered less flexible compared to iterative models?

hard🧠 Conceptual Q10 of Q15
Testing Fundamentals - Testing Models and Approaches
Why is the Waterfall testing model considered less flexible compared to iterative models?
ABecause it encourages frequent requirement changes
BBecause it allows continuous testing during development
CBecause it requires completing each phase fully before moving on
DBecause it integrates design and testing phases
Step-by-Step Solution
Solution:
  1. Step 1: Understand Waterfall's phase structure

    Waterfall requires finishing one phase completely before starting the next.
  2. Step 2: Compare flexibility with iterative models

    This strict order limits flexibility to adapt to changes during development.
  3. Final Answer:

    Because it requires completing each phase fully before moving on -> Option C
  4. Quick Check:

    Waterfall inflexibility = Sequential completion [OK]
Quick Trick: Waterfall = strict step completion, less flexible [OK]
Common Mistakes:
MISTAKES
  • Thinking Waterfall allows continuous testing
  • Believing it supports frequent changes
  • Confusing phase integration

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