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When preparing a presentation for business stakeholders, it is essential to focus on high-level objectives and outcomes that align with business goals. In the context of performance testing, the stakeholders are primarily concerned with ensuring that the system can handle peak loads and maintain operational integrity.

Option Atalks about the setup of the test environment and the logistics of passenger data, which is too technical for business stakeholders.

Option Bfocuses on budget and timeline, which are relevant but do not directly address the performance test's purpose and objectives.

Option Cclearly states the purpose of the performance test (spike test) and its objective, which is to verify that the system can support concurrent request peaks, directly aligning with business interests.

Option Dagain focuses on technical details about the test environment setup, which is not the primary concern for business stakeholders.

Therefore, Option C is the most appropriate choice as it succinctly communicates the performance test's objective and its relevance to business operations.

Generating load through the User Interface (UI) is essential to replicate a real production environment accurately. This approach simulates real user interactions with the system, providing a more realistic assessment of how the system performs under actual usage conditions. According to ISTQB standards, using the UI to generate load helps identify performance issues that users might experience, ensuring that the test results are relevant and actionable.

The correct associations are based on the definitions of each type of performance testing:

Endurance testing: Focused on the stability of the system over a specific time frame. (B)

Scalability testing: Focused on the ability of a system to meet future efficiency requirements. (E)

Capacity testing: Used to determine the number of transactions a given system will support while still meeting established performance objectives. (A)

Stress testing: Evaluates a system's ability to handle reduced availability of resources. (D)

Concurrency testing: Focused on the impact of situations where specific actions occur simultaneously. (C)

References:

ISTQB Performance Testing Syllabus

ISTQB Glossary