[Solved] What does load testing primarily measure in performance testing? — Ans: System behavior under expected user load | Testing Fundamentals

Testing Fundamentals - Non-Functional Testing

What does load testing primarily measure in performance testing?

AUser interface design quality

BSecurity vulnerabilities in the system

CSystem behavior under expected user load

DCode syntax errors

Step-by-Step Solution

Solution:

Step 1: Understand load testing purpose
Load testing checks how a system behaves when many users access it simultaneously, simulating expected real-world usage.
Step 2: Differentiate from other testing types
Security testing looks for vulnerabilities, UI testing checks design, and syntax errors relate to code correctness, not load.
Final Answer:
System behavior under expected user load -> Option C
Quick Check:
Load testing = System behavior under expected load [OK]

Quick Trick: Load testing checks system under normal user load [OK]

Common Mistakes:

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What does load testing primarily measure in performance testing?