CAST Test Design Techniques 2

Question 1

State transition testing is MOST appropriate when:

Accepted Answer

The system reacts differently depending on its current state and input events

Answer

State transition testing is used when a system's response depends on both the current state and the triggering event, making it ideal for systems modeled as finite state machines.

Question 2

In a state transition diagram, what does a 'transition' represent?

Accepted Answer

A movement from one state to another triggered by an event or condition

Answer

A transition represents the change from one state to another, triggered by a specific event, sometimes with a guard condition or resulting action.

Question 3

Use case testing derives test cases from:

Accepted Answer

Interactions between actors and the system that deliver value

Answer

Use case testing creates test cases from use cases that describe how actors (users or systems) interact with the system to achieve a goal, ensuring end-to-end scenarios are validated.

Question 4

Which coverage criterion requires that every valid and invalid transition in a state transition model be exercised at least once?

Accepted Answer

Transition coverage

Answer

Transition coverage (also called 0-switch coverage) requires that every transition—both valid and invalid—in the state model be exercised at least once.

Question 5

A tester finds that a field accepts alphabetic characters when only numeric input should be allowed. Which black-box technique BEST helps design a test case to detect this flaw?

Accepted Answer

Equivalence partitioning with an invalid partition for non-numeric input

Answer

Equivalence partitioning identifies an invalid partition (non-numeric characters) and a single test case from that partition would reveal that the input validation is missing.

(CAST) Certified Associate in Software Testing Practice Test

(CAST) Certified Associate in Software Testing Practice Test

CAST Test Design Techniques 2