CTC Design & Methodology 3

Question 1

Which testing methodology emphasizes writing tests before writing the application code?

Accepted Answer

Test-driven development (TDD)

Answer

TDD requires developers to write a failing unit test first, then write only the code necessary to make that test pass.

Question 2

A state transition diagram shows a login module with states: Logged Out, Entering Credentials, and Logged In. Which transition is INVALID?

Accepted Answer

Logged In → Entering Credentials on valid credentials

Answer

Transitioning from Logged In back to Entering Credentials on valid credentials is illogical; a user already logged in would not re-enter credentials.

Question 3

Which risk factor is MOST likely to increase the priority of a test case in a risk-based testing approach?

Accepted Answer

The module has high usage frequency and a history of defects

Answer

Risk-based testing prioritizes areas with high likelihood of failure (defect history) combined with high impact (usage frequency).

Question 4

What distinguishes a test condition from a test case?

Accepted Answer

A test condition is an aspect of the system to be exercised; a test case is the detailed steps to do so

Answer

A test condition identifies what needs to be tested (e.g., 'valid login'), while a test case specifies exact inputs, steps, and expected outcomes.

Question 5

When designing tests for a system with 3 independent binary conditions, how many rules does a full decision table require?

Accepted Answer

8

Answer

A full decision table for n binary conditions requires 2^n rules; 2^3 = 8 unique combinations.

(CTC) Certified Test Conductor Practice Test