ISTQB CTAL-TM Exam With Confidence Using Practice Dumps

Performance testing is the process of determining the speed, responsiveness, and stabilityof a system under a given workload1. Performance testing should be started as early as possible in the software development lifecycle, preferably during unit and integration testing, to identify and resolve performance issues before they become costly or risky2. Starting performance testing early can also help to validate the performance requirements, design, and architecture of the system, as well as to optimize the performance testing strategy and scope3. Therefore, option A is the correct answer. Option B is incorrect because deferring the start of performance testing until all functional defects have been resolved can delay the detection and resolution of performance issues, increase the cost and effort of performance testing, and reduce the confidence and quality of the system4. Option C is incorrect because leveraging end users to do unit-level performance testing and automated tools for system-level performance testing can introduce inconsistency, bias, and inefficiency in the performance testing process, as well as compromise the reliability and validity of the performance test results. Option D is incorrect because requiring all performance tests to pass before starting functional testing can create unrealistic or unnecessary expectations, as well as hinder the progress and feedback of the functional testing activities. References: 1: ISTQB Glossary, Performance Testing 2: ISTQB® Certified Tester - Performance Testing (CT-PT)3 3: ISTQB® Performance Testing - TesterYou4 4: Performance Testing - ISTQB not-for-profit association : ISTQB - PERFORMANCE TESTING : Performance Testing - ISTQB not-for-profit association

End User Involvement in Testing Levels:

Acceptance testing involves validating the product with the end users to ensure it meets their needs and requirements.

It typically requires close coordination with end users for User Acceptance Testing (UAT).

Evaluation of Options:

A (Component testing)andB (Component Integration testing)do not involve end users, as these are technical-level testing activities.

C (System testing)focuses on the integrated system but does not require end-user participation.

Dis correct because acceptance testing involves direct collaboration with end users.

References and Syllabus Alignment:

Covered under "Test Levels and Objectives" in the ISTQB syllabus (TM-1.2.5)​​.