What is the primary purpose of load/volume testing?

• A. Verify GUI usability
• B. Check performance under peak usage
• C. Validate data integrity only
• D. Check network throughput

Answer: (B)

The main idea behind load and volume testing is to see how the system behaves as the workload grows to peak levels. It simulates many users and transactions so you can measure how responsive the system is, how much throughput it provides, and how much of the hardware resources (CPU, memory, disk I/O, etc.) it uses. The goal is to ensure performance targets are met and that the system can scale without degrading under the highest expected load or volume. This helps identify bottlenecks, plan capacity, and set realistic performance baselines.

Other aspects like GUI usability focus on how easy the interface is for users, which is separate from how the system performs under load. Data integrity tests check that data remains accurate under stress, which is about correctness rather than speed. Network throughput tests look at the capacity of the network path, not the end-to-end performance of the application under peak usage.