Quality Control & Assurance Flashcards

Which AWS service enables automated compliance checks against best practices for cloud resources?

Answer: AWS Config

AWS Config continuously evaluates resource configurations against desired rules and flags non-compliant resources.

In a CI/CD pipeline, what is the purpose of a 'quality gate'?

Answer: To block a build from progressing if it fails defined quality criteria

Quality gates enforce minimum thresholds (e.g., test coverage, vulnerability count) that must be met before a build advances.

Which type of testing simulates real user behavior by sending thousands of concurrent requests to a cloud application?

Answer: Load testing

Load testing evaluates system performance and stability under high concurrent user traffic conditions.

What is 'chaos engineering' in the context of cloud quality assurance?

Answer: Intentionally injecting failures to test system resilience

Chaos engineering proactively introduces controlled failures to verify that systems can withstand unexpected disruptions.

A team uses contract testing between microservices. What does this approach verify?

Answer: That each service honors the API contract expected by its consumers

Contract testing ensures that a provider service's API response matches what its consumer services actually expect.

Which cloud-native practice uses feature flags to control which users see new functionality during QA?

Answer: Progressive delivery

Progressive delivery uses feature flags to gradually expose new features to controlled user segments for quality validation.

What does DORA's 'change failure rate' metric measure in a cloud delivery pipeline?

Answer: The percentage of deployments that cause a production incident or require hotfix

Change failure rate tracks how many production deployments result in degraded service, requiring a fix or rollback.