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Which of the following is the correct sequence of phases in the Waterfall model?

easy📝 Conceptual Q3 of 15
Testing Fundamentals - Testing Models and Approaches
Which of the following is the correct sequence of phases in the Waterfall model?
AImplementation -> Testing -> Design -> Requirements
BDesign -> Requirements -> Implementation -> Testing
CTesting -> Implementation -> Design -> Requirements
DRequirements -> Design -> Implementation -> Testing
Step-by-Step Solution
Solution:

  1. Step 1: Recall Waterfall phase order

    The Waterfall model follows a strict order starting with Requirements, then Design, Implementation, and Testing last.

  2. Step 2: Match the correct sequence

    Requirements -> Design -> Implementation -> Testing matches this exact order.

  3. Final Answer:

    Requirements -> Design -> Implementation -> Testing -> Option D

  4. Quick Check:

    Phase order = Requirements first [OK]
Quick Trick: Remember: R-D-I-T for Waterfall phases [OK]
Common Mistakes:
  • Mixing up design and requirements order
  • Placing testing before implementation
  • Reversing the sequence

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