KCNA Study Guide 2026
Everything you need to pass the KCNA exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 KCNA Exam Format at a Glance
📚 KCNA Topics to Study (68)
✍️ Sample KCNA Questions & Answers
1. Which CSI operation is responsible for attaching a volume to a node before it is mounted to a Pod?
ControllerPublishVolume is the CSI call that attaches a volume to a node, which must happen before NodeStageVolume or NodePublishVolume mount it.
2. A storage administrator wants a PV to only be bound to a specific PVC before it is created. Which mechanism achieves this?
Pre-setting the claimRef on a PV with the namespace and name of the intended PVC ensures only that PVC can bind to it during static provisioning.
3. What is the effect of setting `preemptionPolicy: Never` on a PriorityClass?
`preemptionPolicy: Never` prevents pods in this PriorityClass from evicting lower-priority pods, though they are still queued ahead of them.
4. In the Backends for Frontends (BFF) pattern, what is the purpose of creating separate backends for different client types?
BFF creates dedicated backend services for each client type (mobile, web, etc.) allowing each to be optimized independently without compromising others.
5. Which field controls the order in which containers within a StatefulSet are started and stopped?
The `podManagementPolicy` field (OrderedReady or Parallel) controls how StatefulSet Pods are created, updated, and deleted.
6. Which Kubernetes object is created automatically when dynamic provisioning is triggered by a PVC?
When a PVC references a StorageClass with a provisioner, Kubernetes dynamically creates a PersistentVolume object and binds it to the PVC.