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Free PDF Quiz 2025 Valid CT-PT: Pdf ISTQB Certified Tester - Performance Testing Braindumps

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ISTQB CT-PT Exam Syllabus Topics:

Topic
Details

Topic 1

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 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

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.

ISTQB Certified Tester - Performance Testing Sample Questions (Q21-Q26):

NEW QUESTION # 21
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. Add transaction timers to collect response times.
C. Hold the development team accountable for system performance.
D. Increase the number of scripts executed to provide greater coverage.

Answer: A

NEW QUESTION # 22
What is the primary purpose of a load generator?

A. Simulate user behavior in accordance with the defined operational profile
B. Record and analyze the behavior of the system as it is executing the prescribed tests
C. Create a steady and consistent background load on the system
D. Support root cause analysis when performance degradation is encountered

Answer: A

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 # 23
Which of the following is the best description of spike testing?

A. It focuses on the ability of the system to respond to quick and extreme changes in load.
B. It focuses on the ability of the system to handle loads that are gradually increased to reach the expected maximum.
C. It focuses on the ability of the system to handle loads that are at or beyond the expected peak load.
D. It focuses on the ability of the system to meet future efficiency requirements.

Answer: A

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 # 24
Which of the following is an advantage of using performance monitoring tools?

A. They can proactively detect denial-of-service (DoS) attacks.
B. They proactively compile metrics from server logs.
C. They can prevent malicious behavior.
D. They more easily identify and report multi-threading problems.

Answer: B

Explanation:
Performance monitoring tools collect real-time and historical performance data, particularly from server logs, application metrics, and infrastructure monitoring. This allows testers to analyze performance trends efficiently.
Option A is incorrect because monitoring tools do not prevent malicious behavior but may detect it.
Option C is incorrect since identifying multi-threading issues is typically done through profiling tools rather than performance monitors.
Option D is incorrect as DoS attack detection falls under security testing.

NEW QUESTION # 25
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. At the very beginning of the project during the concept stage
B. During the software design phase when the requirements are set and the design is being defined
C. During the requirements phase when the business stakeholders have the opportunity to agree
D. After test readiness has been achieved, but before system testing starts

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 # 26
......

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Frederick Martin Frederick Martin

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