What is the role of a Kubernetes Deployment object?

• A. Manages pod replicas to achieve the desired state and handles rolling updates
• B. Stores secrets
• C. Provides DNS naming for services
• D. Manages storage volumes

Answer: (A)

A Deployment defines the desired state for your application workload in terms of how many pod replicas should run and how they should be updated over time. Kubernetes uses a Deployment to ensure that the actual state matches this desired state by creating and maintaining ReplicaSets, which in turn manage the pods. This makes it easy to scale the application up or down and to perform rolling updates: when you change the pod template or image, the Deployment gradually replaces old pods with new ones, keeping the service available and allowing for rollback if needed. Secrets, DNS naming for services, and storage volumes are handled by other resources (Secrets, Services, and PersistentVolume/PersistentVolumeClaim), not by Deployments.