Download ISTQB CT-PT Sample Questions [Aug-2025]
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NEW QUESTION # 10
Which of the following is a best practice to include in performance test scripts when verifying results?
- A. Verify that correct information was added to the database.
- B. Hold the development team accountable for system performance.
- C. Add transaction timers to collect response times.
- D. Increase the number of scripts executed to provide greater coverage.
Answer: A
NEW QUESTION # 11
How does a load management console aid performance testing?
- A. It enables senior management to monitor testing.
- B. It simulates user behavior.
- C. It provides reports and graphs for analysis.
- D. It emulates virtual users.
Answer: C
Explanation:
A load management console is a tool that helps testers analyze and visualize test results, providing performance reports, graphs, and insights. This aids in understanding bottlenecks, response times, and throughput trends.
Option A (Simulating user behavior) is incorrect; load generators handle simulation.
Option B (Senior management monitoring) is not the primary role of a test console.
Option D (Emulating virtual users) is incorrect; that is the job of load injectors.
NEW QUESTION # 12
Which of the following is a static performance test?
- A. Usability test of the user interface
- B. Formal signature approval by the end users
- C. Review of the network architecture
- D. Evaluation of the test execution skills of the testers
Answer: C
Explanation:
A static performance test is a non-execution-based review that analyzes system architecture, network configurations, and other elements that affect system performance before execution.
Option A (Usability test) is not a static performance test but rather a functional or UX evaluation.
Option B (Evaluation of testers' skills) is unrelated to performance testing.
Option D (Formal signature approval) is an administrative task and not a static test.
NEW QUESTION # 13
What is the primary purpose of a load generator?
- A. Create a steady and consistent background load on the system
- B. Support root cause analysis when performance degradation is encountered
- C. Simulate user behavior in accordance with the defined operational profile
- D. Record and analyze the behavior of the system as it is executing the prescribed tests
Answer: C
Explanation:
A load generator is responsible for simulating virtual users and applying workloads to a system as defined by an operational profile. This allows testers to analyze how the system behaves under different load conditions.
Option A (Background load) is incorrect because load generators create simulated user interactions, not just background noise.
Option C (Record and analyze behavior) is the role of monitoring tools, not a load generator.
Option D (Support root cause analysis) is incorrect because root cause analysis is done after the load test, using monitoring tools.
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. Wait time
- B. User time
- C. Action time
- D. Think time
Answer: A
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 type of performance test measures the system's ability to handle increasing levels of load?
- A. Spike testing
- B. Elevation testing
- C. Load testing
- D. Endurance testing
Answer: C
Explanation:
Load testing assesses a system's ability to handle gradually increasing levels of load and ensures that it meets performance expectations under normal and peak conditions.
Option B (Elevation testing) is incorrect because this term does not exist in ISTQB performance testing terminology.
Option C (Spike testing) focuses on sudden increases in load rather than gradual scaling.
Option D (Endurance testing) examines how a system performs over an extended period, rather than gradual load increases.
NEW QUESTION # 16
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. Established HTTP response per second goals that will have acceptable minimum, maximum, and average response times
- D. The risks that may exist due to platform differences between the test environment and the production environment
Answer: D
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 # 17
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 each phase in the lifecycle
- C. Preferably at the end of unit testing
- D. Preferably during system integration testing
Answer: B
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 # 18
Which of the following is the best description of spike testing?
- A. It focuses on the ability of the system to meet future efficiency requirements.
- B. It focuses on the ability of the system to handle loads that are at or beyond the expected peak load.
- C. It focuses on the ability of the system to respond to quick and extreme changes in load.
- D. It focuses on the ability of the system to handle loads that are gradually increased to reach the expected maximum.
Answer: C
Explanation:
Spike testing is a type of performance testing that evaluates how a system responds to sudden, extreme increases or decreases in load. It is designed to simulate unexpected surges in user activity or workload, such as flash sales, viral events, or cyberattacks.
Option A (Gradual load increase testing) describes load testing, not spike testing.
Option B (Handling expected peak load) describes stress testing, which pushes the system to or beyond its limits but does not focus on sudden changes.
Option C (Meeting future efficiency requirements) relates to capacity planning rather than spike testing.
Spike testing helps to identify system bottlenecks, resource allocation issues, and performance degradation when traffic surges unexpectedly.
NEW QUESTION # 19
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. Mainframe environment
- B. No environment
- C. Isolated lab environment
- D. Cloud-based environment
Answer: D
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 # 20
Which of the following should be a key part of your test acceptance criteria in your performance test plan?
- A. Documenting previously baselined performance metrics in order to compare these to the new performance measurements
- B. Highlighting any technical differences in the hardware between the test environment and the production environment
- C. Describing the system under test in order to provide context to the metrics
- D. Convincing technical and business stakeholders to provide realistic performance goals for the regional servers
Answer: B
Explanation:
One of the most critical test acceptance criteria in performance testing is to ensure that the hardware in the test environment is comparable to production. Differences in CPU, memory, disk I/O, or network infrastructure can distort performance results.
Option A (Convincing stakeholders to set goals) is a planning activity, not an acceptance criterion.
Option B (Describing the system under test) is important but does not directly affect test acceptance.
Option D (Comparing baselined metrics) is useful, but without a comparable test environment, baseline metrics may be misleading.
NEW QUESTION # 21
You are heading the testing effort for a system that manages the air/fuel ratio of direct-injection fuel devices built specifically for high-altitude rescue helicopter engines. At altitude, the system must be able to perform in order to make enough air/fuel ratio adjustments per millisecond between fuel and both an on-board source and available ambient air in order to prevent an engine stall due to oxygen starvation. The system is following a sequential development lifecycle.
For this safety-critical software, when is the appropriate point in the lifecycle to identify and define the performance goals?
- A. After test readiness has been achieved, but before system testing starts
- B. At the very beginning of the project during the concept stage
- C. During the requirements phase when the business stakeholders have the opportunity to agree
- D. During the software design phase when the requirements are set and the design is being defined
Answer: C
Explanation:
For safety-critical software, performance goals must be identified as early as the requirements phase. This ensures that performance constraints are well understood and accounted for throughout development.
Option A (After test readiness but before system testing) is too late, as requirements should be defined before coding begins.
Option C (During the concept stage) is too early, as details may not be concrete.
Option D (During software design) is useful but should be preceded by a proper definition during the requirements phase.
NEW QUESTION # 22
Which of the following is a major contributor to unreliable performance projections?
- A. Differences in the hardware between the test and production environments
- B. Business stakeholders setting unrealistic performance goals
- C. Disagreement between the technical and business stakeholders during analysis
- D. Redundancy between the test and production environments
Answer: A
Explanation:
One of the biggest contributors to unreliable performance projections is differences between the test and production environments. If test environments do not match CPU, memory, network configurations, and database setups in production, the results may not be representative of real-world performance.
Option A (Redundancy between test and production environments) is not a problem; it's actually beneficial for reliability.
Option B (Disagreement between stakeholders) can affect planning but does not cause unreliable projections.
Option D (Unrealistic stakeholder goals) affects expectations but not the accuracy of projections.
NEW QUESTION # 23
What should be captured for batch processing performance metrics?
- A. Average percentage of network latency
- B. Number of concurrent virtual users
- C. Number of records deleted
- D. Throughput and wait times
Answer: D
Explanation:
For batch processing performance metrics, the two most important factors are:
Throughput - Measures the number of transactions processed over time.
Wait times - Evaluates delays in processing batches.
Option B (Number of records deleted) is irrelevant unless batch processing specifically involves deletions.
Option C (Network latency percentage) applies to real-time transaction processing, not batch jobs.
Option D (Concurrent virtual users) applies more to load testing rather than batch performance.
NEW QUESTION # 24
What challenge must be considered when using crowds to emulate load generation?
- A. This type of load generation is more suitable for mainframe applications.
- B. This technique is more precise than other methods of load generation.
- C. The load generation method is less sensitive to changes in the III.
- D. The load generation will be difficult to reproduce.
Answer: D
Explanation:
Crowd-based load generation involves using distributed users (e.g., cloud-based testers or real users). The main challenge is that the load generation can be difficult to reproduce consistently due to variations in network conditions, device types, and user behavior.
Option B is incorrect because load generation methods should adapt to system changes.
Option C is incorrect since mainframe applications typically do not rely on crowd-based testing.
Option D is incorrect because crowd-sourced load testing is generally less precise than scripted load testing.
NEW QUESTION # 25
Which of the following is a best practice to include in performance test scripts when verifying results?
- A. Verify that correct information was added to the database.
- B. Hold the development team accountable for system performance.
- C. Add transaction timers to collect response times.
- D. Increase the number of scripts executed to provide greater coverage.
Answer: A
Explanation:
One of the best practices in performance test scripting is to validate that correct data is recorded in the database after execution. This ensures that performance issues do not impact data integrity.
Option A (Increasing the number of scripts) may provide more coverage but does not verify accuracy.
Option C (Adding transaction timers) is useful for performance monitoring but does not ensure correct data entry.
Option D (Holding the development team accountable) is a management responsibility, not a scripting best practice.
NEW QUESTION # 26
You have run a load test. When examining the metrics, you see that the virtual users experienced many timeouts and excessive wait times. The system throughput metrics exceeded expected results, even during peak times.
Based on your analysis, what conclusion should you draw?
- A. New test data is needed.
- B. Processing speed is too slow.
- C. Network infrastructure should be investigated.
- D. Virtual users are exhibiting impatient behavior.
Answer: B
Explanation:
If timeouts and excessive wait times occur, but throughput is high, this suggests that the system is unable to process requests fast enough. This points to slow processing speed due to CPU bottlenecks, memory limitations, or inefficient database queries.
Option A (Network infrastructure investigation) would be relevant if throughput was low or variable.
Option C (Impatient virtual users) is irrelevant; virtual users follow scripted behaviors.
Option D (New test data) does not address the core issue.
NEW QUESTION # 27
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ISTQB CT-PT Exam Syllabus Topics:
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