Storage, Runtimes and Orchestration Behavior
This topic covers PersistentVolumes, PersistentVolumeClaims, StorageClasses, container runtimes, orchestration benefits, and workload portability.
How to study for Kubernetes and Cloud Native Associate
Treat each question as a foundation check: identify the Kubernetes primitive, connect it to the cloud native pattern, then choose the least surprising operational behavior.
Core concepts
Concept 1
PVCs express namespaced demand, PVs represent cluster capacity, and StorageClasses plus CSI drivers implement provisioning and lifecycle.
Exam cue: Trace storage from PVC to PV, StorageClass, CSI controller, Node attachment, and mount.
Concept 2
Access mode, volume mode, topology, reclaim policy, and driver capability determine whether storage can bind, attach, mount, expand, and recover.
Exam cue: Check whether the problem is binding, topology, exclusive attachment, filesystem mount, or application consistency.
Concept 3
CRI connects kubelet to runtimes, OCI standardizes artifacts and execution formats, and Pod restart is distinct from controller replacement.
Exam cue: Separate Pod restartPolicy inside one Pod from Job or workload controllers creating a new Pod.
Risk pitfalls and guardrails
Reading ReadWriteOnce as one container rather than one Node at a time.
Guardrail: Avoid answers that rely only on habit, ignore the stated source, skip safety or compliance steps, or choose convenience over the professional standard.
Assuming a storage snapshot is automatically an application-consistent database backup.
Guardrail: Avoid answers that rely only on habit, ignore the stated source, skip safety or compliance steps, or choose convenience over the professional standard.
Believing Deployment rollback or Pod recreation restores external data and schema state.
Guardrail: Avoid answers that rely only on habit, ignore the stated source, skip safety or compliance steps, or choose convenience over the professional standard.
Memory anchors
PersistentVolume
A PersistentVolume is cluster storage with capacity, access mode, reclaim policy, and backing details.
PersistentVolumeClaim
A PersistentVolumeClaim requests storage and binds to a suitable volume or dynamic provisioner.
StorageClass
A StorageClass defines dynamic provisioning behavior for storage requests.
ConfigMap
A ConfigMap stores non-sensitive configuration consumed by Pods.
Container Runtime
A container runtime pulls images and runs containers for kubelet.
Orchestration
Orchestration automates deployment, scheduling, scaling, networking, storage, and recovery of containerized workloads.
Portability
Portability comes from packaging applications in containers and describing runtime needs with platform-neutral resources.
Desired State
Desired state lets the platform continuously compare declared intent with actual runtime behavior.
CSI
CSI standardizes how Kubernetes provisions, attaches, mounts, snapshots, and manages storage through drivers.
Reclaim Policy
Retain preserves released storage for manual handling; Delete asks the integration to remove it.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
An administrator pre-provisions a 500 Gi storage resource that can later satisfy a workload claim. Which API abstraction represents that cluster capacity?
A database team requests 50 Gi of storage in its application Namespace without naming a provider-specific disk. What is the request represented as?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
What is Pass Harbor?
Completely free exam prep for 317 U.S. exams.
- Practice questions
- Flashcards
- Study guides
- Mock exams
- No registration
- No paywall
- Start instantly
“No more expensive exam prep. Quality study tools should be accessible to everyone.”