CAST Test Design Techniques

Question 1

Which test design technique divides input data into groups where all values in a group are expected to be processed the same way?

Accepted Answer

Equivalence partitioning

Answer

Equivalence partitioning divides inputs into classes (partitions) where every value in a class is expected to behave identically, reducing the number of test cases needed.

Question 2

When applying boundary value analysis (BVA) to a field that accepts values from 1 to 100, which set of values should be tested?

Accepted Answer

0, 1, 2, 99, 100, 101

Answer

BVA tests the minimum, minimum+1, maximum-1, maximum, and the values just outside those boundaries (0 and 101), giving 0, 1, 2, 99, 100, 101.

Question 3

A decision table test design technique is MOST useful when:

Accepted Answer

Multiple conditions combine to produce different actions

Answer

Decision tables are best suited when the outcome depends on combinations of multiple conditions, systematically capturing all condition/action combinations.

Question 4

In equivalence partitioning, which statement about invalid partitions is CORRECT?

Accepted Answer

Only one test case from each invalid partition is needed

Answer

Like valid partitions, one representative test case per invalid partition is sufficient because all values within that partition are expected to behave the same way.

Question 5

Which black-box test design technique creates test cases based on cause-effect relationships between inputs and outputs?

Accepted Answer

Decision table testing

Answer

Decision table testing explicitly models cause-effect relationships by listing conditions (causes) and their corresponding actions (effects) in a tabular format.

(CAST) Certified Associate in Software Testing Practice Test

(CAST) Certified Associate in Software Testing Practice Test

CAST Test Design Techniques