Which Kubernetes resource is used to dynamically adjust the resource requests and limits of containers within Pods?

• A. Vertical Pod Autoscaler
• B. Horizontal Pod Autoscaler
• C. StatefulSet
• D. DaemonSet

Answer: (A)

The ability to dynamically tune what each container requests and is allowed to use comes from the Vertical Pod Autoscaler. It watches actual usage (CPU and memory) and updates the resource requests and, optionally, the limits in the Pod spec for the workloads. By adjusting these values in the Pod template of controllers like Deployments or StatefulSets, future pods (and sometimes running ones on a rollout) get the right allocations, helping prevent both over-provisioning and under-provisioning.

Horizontal Pod Autoscaler, by contrast, changes how many pods are running, not how much resource each pod requests. StatefulSet and DaemonSet control how pods are deployed and scheduled across the cluster, but they don’t automatically resize container resources.