Kubernetes and Cloud Native Associate (KCNA) — Question 147

Which Kubernetes-native deployment strategy supports zero-downtime updates of a workload?

Answer options

• A. Canary
• B. Recreate
• C. BlueGreen
• D. RollingUpdate

Correct answer: D

Explanation

The correct answer, RollingUpdate, allows for gradual updates to a workload, ensuring that some instances remain available while others are being updated, thus achieving zero downtime. Canary and BlueGreen strategies can also help with updates, but they do not specifically guarantee zero-downtime in the same way. The Recreate strategy takes down the existing workload before deploying the new one, which leads to downtime.