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ISTQB CT-PT Exam Syllabus Topics:

Topic
Details

Topic 1

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.

Topic 2

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 3

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 4

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.

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ISTQB Certified Tester - Performance Testing Sample Questions (Q24-Q29):

NEW QUESTION # 24
You are managing the testing efforts of an existing distributed system that manages inventories of automobile and light truck tires from multiple warehouses across the country. The system is being enhanced to track incoming restocking shipments at the point of entry to the warehouse and outbound sales shipments at the point of shipment from the warehouse, all of which are executed in real-time. System loads traditionally peak on Mondays due to built-up demand from the previous weekend.
You are preparing a presentation to the business stakeholders, outlining your performance testing strategy.
Which of the following is appropriate to present to this audience?

A. A test plan that includes specific technical specifications for the computing hardware to be used for performance testing
B. A comprehensive list of support staff to be available during performance testing, including key members of the application development team
C. The risks that may exist due to platform differences between the test environment and the production environment
D. Established HTTP response per second goals that will have acceptable minimum, maximum, and average response times

Answer: C

Explanation:
Business stakeholders are most concerned with risks that affect deployment and production stability. The primary risk in performance testing is that the test environment may differ from production, leading to misleading test results.
Option A (HTTP response goals) is too technical for a business stakeholder audience.
Option B (Hardware specifications) is relevant for technical teams, not business stakeholders.
Option C (Support staff details) is a logistical aspect, not a key performance testing risk for business decision-makers.

NEW QUESTION # 25
Which of the following is the most economical solution to minimize costs and time for performance testing for a high-end production client-server platform?

A. No environment
B. Isolated lab environment
C. Cloud-based environment
D. Mainframe environment

Answer: C

Explanation:
A cloud-based environment is the most cost-effective solution for performance testing. It offers scalability, pay-per-use models, and flexibility, allowing testers to simulate large workloads without expensive infrastructure investments.
Option A (Isolated lab environment) is costly due to hardware maintenance and infrastructure costs.
Option C (Mainframe environment) is expensive and impractical for performance testing.
Option D (No environment) is not a viable option.

NEW QUESTION # 26
Why is it important to specify how failures are handled during test execution?

A. To ensure that new failures are not introduced
B. To meet the expectations of the business stakeholders
C. To minimize distractions during testing
D. To ensure all defects are captured

Answer: A

Explanation:
During performance testing, it is crucial to define failure handling procedures to ensure that failures do not introduce additional errors into the test execution process. This helps maintain test accuracy and avoid misleading results.
Option A (Meeting stakeholder expectations) is important but not the primary reason for defining failure handling.
Option C (Capturing all defects) is a general testing principle, not specific to failure handling in performance tests.
Option D (Minimizing distractions) is not a valid reason for defining failure handling.

NEW QUESTION # 27
Which of the following is a key reason to include ramp-up and ramp-down periods in a performance test?

A. To provide a buffer for slow-performing transactions to complete
B. To ensure virtual users complete their transactions within a defined time window
C. To simulate a more realistic user load pattern and avoid sudden system stress
D. To guarantee that all virtual users remain active throughout the test duration

Answer: C

Explanation:
A ramp-up period in a performance test gradually increases load over time, and a ramp-down period does the opposite. This prevents sudden surges in system load, making test results more realistic.
Option A (Ensuring transactions complete in a time window) is incorrect because ramp-up/down periods do not control transaction timing.
Option C (Providing a buffer for slow transactions) is incorrect because ramp-up/down is about load balancing, not transaction timing.
Option D (Keeping all virtual users active throughout the test) is incorrect because ramp-down periods reduce users gradually.

NEW QUESTION # 28
What is typically the result of oversaturation of system resources during performance testing?

A. Error logging will decrease.
B. Response time will be slow under significant load levels.
C. The size of the database will gradually decrease.
D. Response time will gradually improve over a period of time.

Answer: B

Explanation:
When system resources are oversaturated (e.g., CPU, RAM, or network bandwidth), response times will degrade because the system struggles to process requests efficiently. This is a key performance bottleneck indicator.
Option A is incorrect because response times do not improve under heavy load; they typically worsen.
Option C is incorrect because error logging may actually increase rather than decrease under stress.
Option D is incorrect because database size is independent of system saturation unless records are actively purged.

NEW QUESTION # 29
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