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Which of the following is the correct way to describe a non-functional requirement?

easy📝 Syntax Q3 of Q15
Testing Fundamentals - Non-Functional Testing
Which of the following is the correct way to describe a non-functional requirement?
AIt specifies what the system should do
BIt lists the software's user interface colors
CIt defines how the system performs under conditions
DIt describes the software's database schema
Step-by-Step Solution
Solution:

  1. Step 1: Differentiate functional vs non-functional requirements

    Functional requirements describe what the system does; non-functional describe how it performs.

  2. Step 2: Identify the correct description for non-functional requirements

    Non-functional requirements focus on performance, reliability, usability, etc.

  3. Final Answer:

    It defines how the system performs under conditions -> Option C

  4. Quick Check:

    Non-functional = How system performs [OK]
Quick Trick: Non-functional = How system behaves, not what it does [OK]
Common Mistakes:
MISTAKES
  • Confusing functional and non-functional requirements
  • Focusing on UI colors or database design
  • Ignoring performance and reliability aspects

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