Software Testing Software Testing Defect Management & Lifecycle 2

Question 1

What is defect clustering in software testing?

Accepted Answer

The tendency for most defects to concentrate in a small number of modules

Answer

Defect clustering (an application of Pareto's principle) observes that roughly 80% of defects are typically found in about 20% of the modules.

Question 2

What does 'defect leakage' refer to?

Accepted Answer

Defects that escape testing and reach production

Answer

Defect leakage measures the number of defects found by end users in production that should have been caught during testing.

Question 3

Which term describes a defect introduced while fixing another defect?

Accepted Answer

Regression defect

Answer

A regression defect (or regression) is introduced when a code change — including a bug fix — unintentionally breaks previously working functionality.

Question 4

What information is essential in a well-written defect report?

Accepted Answer

Steps to reproduce, expected result, actual result, and environment details

Answer

A complete defect report includes clear reproduction steps, the expected vs. actual behavior, severity, priority, and the environment in which it was observed.

Question 5

In defect management, what does 'root cause analysis' aim to achieve?

Accepted Answer

Identify the underlying process or code issue that caused the defect

Answer

Root cause analysis investigates the underlying reason a defect was introduced to enable process improvements that prevent similar defects in the future.

Software Testing Practice Test

Software Testing Practice Test

Software Testing Software Testing Defect Management & Lifecycle 2