CTAL-TTA practice question 13 of 25

Which of the following statements about performance testing tools is NOT correct?

Answer options

A: Typical metrics and reports provided by performance testing tools include the number of simulated users throughout the test, and the number and type of transactions generated by the simulated users, and the arrival rate of the transactions.

B: Significant factors to consider in the implementation of performance testing tools include the flexibility of the tool to allow different operational profiles to be easily implemented, and the hardware and network bandwidth required to generate the load.

C: Performance testing tools typically drive the application by simulating user interaction at the graphical user interface level to more accurately measure response times. Correct answer

D: Performance testing tools generate a load by simulating a large number of virtual users following their designated operational profiles to generate specific volumes of input data.

Correct Answer:

C. Performance testing tools typically drive the application by simulating user interaction at the graphical user interface level to more accurately measure response times.

Explanation

Performance testing tools typically simulate user traffic at the communications protocol level (e.g., HTTP, REST, SQL) rather than at the Graphical User Interface (GUI) level. Simulating thousands of virtual users at the GUI level would require prohibitive amounts of hardware resources (CPU and memory) for the load generators. Therefore, statement C is incorrect because performance tools do not typically drive the application via GUI interaction to measure response times under load.

Why Incorrect

A. This is a correct statement; performance tools provide standard metrics like simulated users, transactions, and arrival rates.
B. This is a correct statement; flexibility for operational profiles and hardware/network bandwidth are significant implementation factors for load generation.
D. This is a correct statement; tools generate load using virtual users following operational profiles to create specific data volumes.

References

1. ISTQB Certified Tester Advanced Level Syllabus Technical Test Analyst v4.0 (2021), Section 6.2.3 Performance Testing Tools.

2. ISTQB Certified Tester Foundation Level Performance Testing Syllabus v1.2 (2018), Section 4.2.1 Load Generation.

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