Red Hat Openshift Developer EX288 Practice Exam

In Kubernetes/OpenShift, which statement correctly describes Pod and Deployment?

Deployment is the smallest unit; a Pod manages nodes and networking. A Pod is the smallest unit; a Deployment manages a set of Pods and handles updates and scaling. Pods and Deployments are equivalent concepts used interchangeably. A Pod runs a single container only; a Deployment runs multiple containers.

Correct Answer:

A Pod is the smallest unit; a Deployment manages a set of Pods and handles updates and scaling.

Explanation:

In Kubernetes and OpenShift, the Pod is the smallest schedulable unit that runs one or more containers in a shared context (network and storage). A Deployment sits above Pods as a controller that defines how many Pods should run and how updates and scaling should be handled. It creates and manages ReplicaSets, which in turn ensure the desired number of Pod replicas, enabling safe rolling updates and automatic rollbacks if something goes wrong. Pods can host multiple containers, though common practice is one container per Pod; a Deployment doesn’t run containers directly, it manages the Pods that do. This is why selecting the statement that a Pod is the smallest unit and a Deployment manages a set of Pods with updates and scaling is the best description.

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