CKAD Study Guide 2026
Everything you need to pass the CKAD 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.
📋 CKAD Exam Format at a Glance
📚 CKAD Topics to Study (21)
✍️ Sample CKAD Questions & Answers
1. What is the purpose of a volumeMount entry in a container spec?
A volumeMount specifies the mountPath inside a container where the referenced volume will be mounted and accessible to the application.
2. For what organization is the CKAD program in development?
The CKAD program, along with other Kubernetes certifications like CKA and CKS, is developed and maintained by the Cloud Native Computing Foundation (CNCF). The CNCF is a vendor-neutral organization that fosters and sustains an ecosystem of open-source projects, including Kubernetes, and provides certifications to validate expertise in these technologies.
3. How can you create an emptyDir volume backed by node RAM instead of disk?
Setting emptyDir.medium to 'Memory' causes Kubernetes to mount a tmpfs (RAM-backed) filesystem, giving faster I/O at the cost of node memory.
4. What is the primary purpose of an Init Container in a Pod?
Init containers run to completion before any app containers start, allowing setup like waiting for services or populating volumes.
5. Which Network Policy 'namespaceSelector' configuration allows ingress from all pods in namespaces labeled 'env=monitoring'?
Network Policies use 'namespaceSelector.matchLabels' to select source namespaces by their labels.
6. What is the term for the ability to query fetch logs for each container?
Observability in the context of cloud-native applications refers to the ability to understand the internal state of a system by examining its external outputs, such as logs, metrics, and traces. The ability to query and fetch logs for each container is a fundamental aspect of achieving observability, allowing developers to diagnose issues and monitor application behavior within Kubernetes.