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

Boundary value analysis

Answer

Decision table testing

Answer

State transition testing

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

1, 50, 100

Answer

1, 25, 75, 100

Answer

0, 50, 101

Question 3

A decision table test design technique is MOST useful when:

Accepted Answer

Multiple conditions combine to produce different actions

Answer

Input values form a continuous numeric range

Answer

The system transitions between multiple states

Answer

Test coverage of individual code branches is required

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

Invalid partitions should be tested with multiple values

Answer

Invalid partitions need not be tested if valid partitions pass

Answer

Invalid partitions apply only to output values

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

Statement coverage

Answer

Path testing

Answer

Branch coverage

Question 6

What is the PRIMARY purpose of pairwise (all-pairs) testing?

Accepted Answer

Test all combinations of two input parameters while reducing total test cases

Answer

Ensure every statement in the code is executed

Answer

Verify state transitions between all system states

Answer

Cover every branch in the control flow graph

Question 7

Which of the following BEST describes the 'error guessing' test design technique?

Accepted Answer

An experience-based technique where testers use knowledge of typical errors to design tests

Answer

A formal method using mathematical proofs to identify defects

Answer

A structured approach derived from system specifications

Answer

A technique that automates random input generation