In Containers 101, which term describes a group of containers that can be scheduled and scaled on the cluster?

• A. Container
• B. Pod
• C. Server instance
• D. Namespace

Answer: (B)

A Pod is the unit that can be scheduled on a cluster and scaled. It represents a small wrapper around one or more containers that share the same network and storage context, so they run together on the same node. When you scale, you increase the number of Pods, not the containers inside a Pod, and this is typically managed by a higher-level controller like a Deployment. A single Container is just the runtime for one image, not the grouping used for scheduling and scaling. A Namespace is for organizing resources, and a Server instance refers to a node, not the grouping used for scheduling and scaling.