Definitions

Some of the following definitions can be direct questions in the ISTQB exams.

1. Error / Mistake :  

A human action that produces an incorrect result.

2.Defect / Bug / Fault: 

A flaw in a component or system that can cause the component or system to fail to perform its required function, e.g. an incorrect statement or data definition. A defect, if
encountered during execution, may cause a failure of the component or system.

 3.Failure : 

Any deviation of the component or system from its expected delivery, service or result. 

4.Black box test design technique: 
Procedure to derive and/or select test cases based on an analysis of the specification, either functional or non-functional, of a component or system without reference to its internal structure. 

5.Black box testing: 

Testing, either functional or non-functional, without reference to the internal structure of the component or system. 

6.White-box test design technique: 

Procedure to derive and/or select test cases based on an analysis of the internal structure of a component or system. 

7.White-box testing: 

Testing based on an analysis of the internal structure of the component or
system. 





8.Alpha Testing :
 
9.Beta Testing :