PCET-30-01 sample questions

Question 1

A product owner insists that the QA team must guarantee the upcoming release is "100% bug-free" after a major system rewrite. The QA lead pushes back, explaining that this is fundamentally impossible based on core software testing principles.

Which concept is the QA lead referring to?

Accepted Answer

The absence-of-defects fallacy, which states that testing can show the presence of defects, but cannot prove their absolute absence.

Answer

The defect clustering principle, which states that bugs are always distributed evenly across all modules.

Answer

The pesticide paradox, which proves that writing new tests will inevitably introduce new bugs.

Answer

The Shift-Right testing methodology, which delays defect discovery until user acceptance testing.

Question 2

A developer misinterprets a business requirement regarding tax calculations. Because of this misunderstanding, the developer writes flawed logic in the `calculate_tax()` Python function. When the code is deployed to production, a user receives an incorrect invoice total.

What is the correct terminology for this sequence of events in software testing?

Accepted Answer

Error -> Defect -> Failure

Answer

Defect -> Error -> Failure

Answer

Failure -> Error -> Defect

Answer

Bug -> Failure -> Error

Question 3

In the context of the error-defect-failure chain, which of the following scenarios strictly represents a "failure"?

Accepted Answer

A user clicks the 'Submit' button on a form and the application crashes with a 500 Internal Server Error.

Answer

A programmer accidentally types '==' instead of '=' when assigning a variable in the authentication module.

Answer

A product owner forgets to include a critical business rule regarding discounts in the acceptance criteria.

Answer

A static analysis linter reveals that a newly written function is missing a required docstring.

Question 4

Which of the following are primary benefits of adopting a "Shift-Left" testing strategy in the Software Development Lifecycle (SDLC)? (Select TWO)

Accepted Answer

Defects are caught earlier in the process, significantly reducing the cost and effort required to fix them.

Accepted Answer

Testers collaborate closely with developers and designers during the requirements and design phases to prevent defects.

Answer

Testing is delayed until the end of the SDLC to ensure all features are fully developed before validation begins.

Answer

Automated end-to-end tests completely replace the need for unit tests, speeding up the release cycle.

Answer

The responsibility of finding functional bugs is shifted entirely to the end-users in the production environment.

Question 5

How does software testing in an Agile environment primarily differ from a traditional Waterfall methodology?

Accepted Answer

Agile emphasizes continuous testing throughout development sprints, whereas Waterfall typically isolates testing to a specific late stage.

Answer

Agile testing only involves system testing, while Waterfall includes unit, integration, and acceptance testing.

Answer

Agile relies exclusively on manual exploratory testing, while Waterfall requires full test automation.

Answer

Agile eliminates the need for test planning and documentation, whereas Waterfall requires rigid test plans.

Question 6

A testing team has limited time before a critical release and cannot execute the entire regression test suite. They decide to allocate 80% of their testing effort to the payment processing and user authentication modules, as failures there would cause significant financial and reputational damage.

This approach is an example of:

Accepted Answer

Risk-based prioritization

Answer

Exhaustive testing

Answer

The absence-of-defects fallacy

Answer

Shift-Right testing

Free PCET-30-01 sample questions

A product owner insists that the QA team must guarantee the upcoming release is "100% bug-free" after a major system rewrite. The QA lead pushes back, explaining that this is fundamentally impossible based on core software testing principles. Which concept is the QA lead referring to?

In the context of the error-defect-failure chain, which of the following scenarios strictly represents a "failure"?

Which of the following are primary benefits of adopting a "Shift-Left" testing strategy in the Software Development Lifecycle (SDLC)? (Select TWO)

How does software testing in an Agile environment primarily differ from a traditional Waterfall methodology?

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