CT-PT Exam Dumps - ISTQB Certified Tester - Performance Testing

Crowd-based load generationinvolves using distributed users (e.g., cloud-based testers or real users). The mainchallengeis thatthe load generation can be difficult to reproduce consistentlydue to variations innetwork conditions, device types, and user behavior.

Option B is incorrectbecause load generation methods should adapt to system changes.

Option C is incorrectsince mainframe applications typically do not rely on crowd-based testing.

Option D is incorrectbecause crowd-sourced load testing is generallyless precisethan scripted load testing.

Performance monitoring mustbegin simultaneously with test executiontocapture system behavior in real-time. This ensures thatbottlenecks and performance issues are identified immediately.

Option A (After testing is concluded)is incorrect becausehistorical monitoring does not help in real-time analysis.

Option B (Before execution)is incorrect because monitoring needsactive system loadto measure performance.

Option C (Immediately after execution)is incorrect because itmisses runtime metrics.

One of thebiggest contributors to unreliable performance projectionsisdifferences between the test and production environments. If test environments do not matchCPU, memory, network configurations, and database setupsin production, the results may not berepresentative of real-world performance.

Option A (Redundancy between test and production environments)isnot 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 butnot the accuracy of projections.

When system resources (e.g.,CPU, RAM, I/O) are oversaturated, the system becomes overloaded, leading toincreased response timesandpoor application performance.

Option A (Gradual improvement of response time)is incorrect becauseperformance degrades under heavy load.

Option C (Error logging decreases)is unlikely; in most cases, errorsincreasewhen systems reach their limits.

Option D (Database size decreases)is unrelated to performance saturation.