1.2.3 Errors, Defects, and Failures

Question 1

A person can make an

Answer 1

error (mistake)

Question 2

error can lead to

Answer 2

the introduction of a defect (fault or bug) in the software code or in some other related work product.

Question 3

If a defect in the code is executed, this may cause

Answer 3

a failure

Question 4

some defects require very specific inputs or preconditions

Answer 4

to trigger a failure

Question 5

Errors may occur for many reasons, such as:

Answer 5

Time pressure
Human fallibility
Inexperienced or insufficiently skilled project participants
Miscommunication between project participants
Complexity of the code, design, the underlying problem to be solved, and/or the technologies used
Misunderstandings about intra-system and inter-system interfaces (interactions)
unfamiliar technologies

Question 6

Why False positives may occur?

Answer 6

due to errors in the way tests were executed or due to defects in the test data, the test environment or other testware, etc.