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Cluster architecture, Pods, Nodes, Namespaces, control plane components, and the Kubernetes API.

Deployments, ReplicaSets, StatefulSets, DaemonSets, Jobs, CronJobs, and Pod lifecycle.

Services (ClusterIP, NodePort, LoadBalancer), Ingress, DNS, NetworkPolicies, and cluster networking fundamentals.

Volumes, PersistentVolumes, PersistentVolumeClaims, StorageClasses, and dynamic provisioning.

ConfigMaps, Secrets, resource requests/limits, LimitRanges, ResourceQuotas, and the Downward API.

RBAC, ServiceAccounts, Roles, ClusterRoles, admission controllers, Pod security, and best practices.

Common kubectl commands, rollouts, scaling, debugging, port-forwarding, and cluster maintenance.

Helm, Operators, CRDs, HPA, VPA, Cluster Autoscaler, taints/tolerations, affinity, and scheduling.