KCNA Cloud Native Patterns 3

Question 1

Which cloud native pattern involves deploying infrastructure and configuration through version-controlled code rather than manual processes?

Accepted Answer

GitOps

Answer

GitOps uses Git as the single source of truth for declarative infrastructure and application state, with automated reconciliation.

Question 2

In a microservices architecture, what is the Saga pattern used for?

Accepted Answer

Managing distributed transactions across multiple services

Answer

The Saga pattern coordinates distributed transactions by breaking them into a sequence of local transactions with compensating actions for rollback.

Question 3

What is the key characteristic of Immutable Infrastructure?

Accepted Answer

Servers are never modified after deployment; changes require new deployments

Answer

Immutable Infrastructure means deployed artifacts are never changed in place; any update requires replacing the artifact with a new version.

Question 4

Which deployment pattern minimizes downtime by running two identical production environments and switching traffic between them?

Accepted Answer

Blue-Green Deployment

Answer

Blue-Green Deployment maintains two identical environments and switches traffic from one to the other, enabling instant rollback if issues arise.

Question 5

In the Backends for Frontends (BFF) pattern, what is the purpose of creating separate backends for different client types?

Accepted Answer

To tailor API responses and logic specifically for each client's needs

Answer

BFF creates dedicated backend services for each client type (mobile, web, etc.) allowing each to be optimized independently without compromising others.

(KCNA) Kubernetes and Cloud Native Associate Practice Test

(KCNA) Kubernetes and Cloud Native Associate Practice Test

KCNA Cloud Native Patterns 3