Cloud Engineer Quality Control & Assurance 4

Question 1

Which testing approach verifies that a new code change has not broken existing functionality?

Accepted Answer

Regression testing

Answer

Regression testing re-executes existing test suites after changes to confirm that previously working features remain intact.

Question 2

A cloud engineer is implementing SLOs for a service. What does an 'error budget' represent?

Accepted Answer

The allowed amount of downtime or errors before the SLO is breached

Answer

An error budget is the acceptable margin of failure derived from the SLO, giving teams flexibility to ship while maintaining reliability.

Question 3

What is 'mutation testing' used for in software quality assurance?

Accepted Answer

Evaluating the effectiveness of existing test suites by introducing small code faults

Answer

Mutation testing introduces deliberate code faults ('mutants') to verify that the test suite catches and fails on them.

Question 4

Which Kubernetes feature can enforce quality policies by blocking non-compliant pod configurations at admission time?

Accepted Answer

Admission webhooks / OPA Gatekeeper

Answer

Admission webhooks and tools like OPA Gatekeeper intercept API requests and reject resources that violate defined policies.

Question 5

In cloud infrastructure testing, what does 'infrastructure as code (IaC) testing' typically include?

Accepted Answer

Linting, unit tests, and integration tests for Terraform/CloudFormation templates

Answer

IaC testing combines linting (tflint), policy checks (Checkov), and test frameworks (Terratest) to validate templates before deployment.

Cloud Engineer Practice Test