CAST Defect Management Lifecycle 4

Question 1

Why is a defect linked back to the original test case that found it?

Accepted Answer

To provide traceability and context

Answer

Linking to the test case gives traceability between requirements, tests, and defects.

Question 2

A defect previously marked 'Closed' is found again in a later build. What status should it receive?

Accepted Answer

Reopened

Answer

A recurring closed defect is 'Reopened' and linked to its original record.

Question 3

What is the primary goal of root cause analysis in defect management?

Accepted Answer

To identify why the defect occurred and prevent recurrence

Answer

Root cause analysis finds the underlying reason so similar defects can be prevented.

Question 4

Which metric measures the percentage of defects removed before a release ships?

Accepted Answer

Defect Removal Efficiency

Answer

Defect Removal Efficiency (DRE) measures the share of defects caught before release.

Question 5

Defect density is typically calculated as the number of defects per what?

Accepted Answer

Unit of size (e.g., KLOC or function point)

Answer

Defect density is defects divided by a size measure such as thousand lines of code.

CAST Test Practice Test