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ISTQB CT-PT Latest Exam Book | CT-PT Exam Exercise
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ISTQB CT-PT Exam Syllabus Topics:
Topic
Details
Topic 1
- Types of Performance Testing: This section of the exam measures the skills of Software Test Analysts and covers various approaches such as load, stress, scalability, spike, endurance, concurrency, and capacity testing. It explains how each type evaluates system behavior under different conditions, helping testers and stakeholders understand how the system handles both expected and extreme usage scenarios.
Topic 2
- Testing Types in Performance Testing: This section of the exam introduces the distinction between static and dynamic performance testing. It shows how reviews of requirements, architecture, and code can identify risks before coding is complete, and how runtime checks of resource utilization and response times reveal issues that only appear when the system is in operation.
Topic 3
- The Concept of Load Generation: This section of the exam measures the skills of Software Test Analysts and discusses how representative loads are modeled and produced to simulate user or process behavior. It explores methods such as user interface inputs, crowdsourcing, API-based calls, or protocol capture and playback, emphasizing the need for repeatable loads that accurately reflect real-world conditions.
Topic 4
- Common Failures in Performance Testing and Their Causes: This section of the exam measures the skills of Performance Engineers and outlines frequent failure modes, including slow responses at various load levels, degraded performance over time, and system crashes under peak conditions. It provides examples of underlying causes such as resource leaks, insufficient capacity, and poor handling of spikes or concurrency, illustrating why robust planning and monitoring are crucial for reliable performance.
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ISTQB Certified Tester - Performance Testing Sample Questions (Q12-Q17):
NEW QUESTION # 12
Which of the following is considered a common web service protocol?
- A. RTE
- B. SOAK
- C. REST
- D. HTTP
Answer: C
Explanation:
REST (Representational State Transfer) is a widely used web service protocol that enables client-server communication over HTTP. It is commonly used in modern APIs and web applications for performance testing.
Option A (SOAK) refers to soak testing, which evaluates performance over an extended period.
Option C (HTTP) is a transport protocol, but REST is the actual web service architecture built on HTTP.
Option D (RTE) is not a web service protocol but may refer to Real-Time Enterprise systems.
NEW QUESTION # 13
What is an advantage of aggregating the results of performance testing?
- A. Testing is expedited when the results are aggregated.
- B. Aggregated results provide more detail and allow for a more complete analysis of the test.
- C. Aggregated results show when testing has been completed.
- D. It is easier for stakeholders to draw a correct conclusion from aggregated results.
Answer: D
Explanation:
Aggregating test results helps stakeholders understand performance trends by combining data points from multiple test runs. This makes it easier to draw conclusions about system behavior.
Option A is incorrect because aggregation may reduce detailed visibility, not increase it.
Option B is incorrect because aggregation does not expedite testing itself.
Option D is incorrect because aggregated results do not indicate test completion.
NEW QUESTION # 14
During performance testing, in addition to the transaction response time, which of the following is needed to accurately reflect the total time to complete a transaction?
- A. Action time
- B. Think time
- C. User time
- D. Wait time
Answer: D
Explanation:
Wait time is the period a transaction spends waiting for resources, database responses, or external services before completing. It is critical for understanding real-world transaction durations.
Option A (Think time) refers to user delays, not system delays.
Option C (Action time) focuses on execution time only.
Option D (User time) is not a standard performance metric.
NEW QUESTION # 15
Which of the following is a key challenge when testing applications in a cloud environment?
- A. Limited ability to control test execution timing
- B. Inability to generate significant load
- C. Test execution speed being too high
- D. Lack of user behavior simulation tools
Answer: A
Explanation:
One of the biggest challenges of cloud-based performance testing is the lack of control over test execution timing due to shared cloud resources. Cloud environments dynamically allocate computing power, meaning that test execution may vary due to background processes, VM migrations, or auto-scaling events.
Option B (Inability to generate load) is incorrect because cloud platforms can scale up resources to generate high loads.
Option C (Lack of behavior simulation tools) is incorrect because cloud providers offer robust testing tools.
Option D (Test execution speed being too high) is not a valid performance testing challenge.
NEW QUESTION # 16
You are managing a project that is testing a system that manages a newly redesigned jet engine for heavy aircraft. Given the fact that this engine is specifically engineered to reduce noise, it is important that the software maintains enough thrust for lift for a period of 5 minutes without exceeding 87.5dB. The software must achieve this independent of other internal systems such as fuel or navigation management.
Given the risk for the ability of the aircraft to meet the noise abatement regulations while still being able to fly, when is the optimum time in the software lifecycle to apply the performance testing?
- A. Preferably at the end of system testing
- B. Preferably during system integration testing
- C. Preferably during each phase in the lifecycle
- D. Preferably at the end of unit testing
Answer: C
Explanation:
Performance testing should be integrated into every phase of the software lifecycle to ensure that critical performance requirements (such as thrust-to-noise ratio) are met early and continuously validated.
Option B (End of system testing) is too late, as issues may be costly to fix at that stage.
Option C (During system integration testing) is useful but not comprehensive enough.
Option D (At the end of unit testing) is incorrect because unit tests do not assess overall system performance.
NEW QUESTION # 17
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