(209) ISTQB | Performance Testing Syllabus | Chapter 1: Basic Concepts | By Asser Gameel

What is the main objective of performance testing?

To evaluate the performance efficiency and responsiveness of a system or component under various loads.

What are the three sub-characteristics of performance efficiency according to ISO 25010?

Time behavior, resource utilization, and capacity.

What does load testing evaluate?

The ability of a system to handle increasing levels of anticipated realistic loads.

What is the focus of stress testing?

To evaluate how a system handles peak loads beyond its anticipated limits.

What does scalability testing aim to determine?

A system's ability to meet future efficiency requirements and grow with increasing users and data.

What is endurance testing primarily concerned with?

The stability of a system over an extended time frame and the identification of resource capacity problems.

Why is dynamic testing important in performance testing?

It allows for the evaluation of performance while the system is being built and can help identify bottlenecks early.

What is a key factor in load generation during performance testing?

The need for loads to represent multiple user inputs, requiring dedicated hardware and tools.

What is the concept of 'slow response under all load levels'?

It refers to unacceptable response times regardless of the load, often caused by underlying performance issues.

What does capacity testing determine?

How many users or transactions a system can support while still meeting the stated performance objectives.

What is the first principle of performance testing?

Tests must be aligned to the defined expectations of different stakeholder groups.

What is the principle behind conducting reproducible tests?

Statistically identical results within a specified tolerance must be obtained on an unchanged system.

What is the risk associated with using the user interface for load generation?

The user interface may frequently change, affecting the repeatability and maintenance costs of performance tests.

What underlying issues might cause 'degraded response over time'?

Memory leaks, disk fragmentation, increasing network load, or unexpected database growth.

What factors are critical for successful performance testing?

Correctly modeling and generating representative system loads.