Sid 17- 1.2.2 - 1.2.3 Flashcards
Are testing and qa the same? (short)
no
What is testing (In opposite to QA)
Focus on those activities supporting the achievement of appropriate levels of quality.
Form of quality control.
What is Qa (In opposite to testing)
Preventive approach that focuses on the implementation and improcement of processes.
What are QA thinking?
If a good process is followed correctly,then it will generate a good product.
Who is product-oriented? Test or quality
Test
Who is process-oriented? Test or quality
Quality
Which proccesses does qa apply to ?
Both development and testing processes - and responsibility of everyone on a project
Who uses test results? QA or test?
Both.
How are test results used in test? In opposite to qa
To fix defects
How are test results used in qa? In opposite to test
They provide feedback on how well the development and test processes are performing
What does a tester do konkret?
formal methods (model checking and proof of correctness)
Simulation
Prototyping
What is an error?
Mistake
What is defects in english?
faults, bugs
what can defects (faults , bugs) result in?
failures
Why do human make errors?
Time pressure
Complexity of work products
Processes
Infrastructure
Interactions
Tired
Lack asequate training
Where can defects be found?
In documentations (krav or test script)
Source code
Supporting work product (such as a build file)
What happens with defects in work products produced earlier in the SDLC?
If undetected often lead to defective work products later in the lifecycle
Do all defects result in a failure?
Some when executed
Some later
Some never
What is a fundamental reason for the occurence of a problem? (ex a situation that leads to an error)
Root cause
How do you find a root cause?
Through root cause analysish
When should a root cause analysis be done?
When a failure eccours or a defect is identified
Why is it important to identify the root cause?
To prevent future similar failures or defects - they can be prevented
Or their frequenct reduced - tex genom att remove it
How can environmental conditions cause failures?
By radiation
Electromagnetic fields
