CKA Exam Guide 2025: What I Wish I Knew Before Studying

The CKA is Different

Not multiple choice — it is a live terminal exam. You get a Kubernetes cluster and 2 hours to complete 15-20 hands-on tasks. No options to pick from. You either know how to do it or you do not.

Domain Weights

30% Troubleshooting | 25% Cluster Architecture | 20% Services and Networking | 15% Workloads | 10% Storage. Troubleshooting is the biggest section — spend most prep time on it.

The 5 Mistakes Most Candidates Make

1. Studying theory instead of practicing — Muscle memory matters. Set up minikube and do everything from the CLI.

2. Not mastering kubectl shortcuts — 7 minutes per task. Speed is essential.

alias k=kubectl
export do="--dry-run=client -o yaml"
export now="--force --grace-period 0"

3. Not using killer.sh — Buy the exam from Linux Foundation (includes killer.sh sessions). It is harder than the real exam. Score 85%+ there before booking.

4. Skipping ETCD backup/restore — Appears in almost every exam. Practice until automatic.

5. Not practicing the exam docs — kubernetes.io/docs is allowed. Learn to navigate it fast.

6-Week Study Plan

Weeks 1-2: Core objects (Pods, Deployments, Services, ConfigMaps, Secrets). Weeks 3-4: RBAC, NetworkPolicy, PV/PVC, Ingress, HPA. Week 5: Troubleshooting — set up broken clusters and fix them. Week 6: killer.sh mock exams only.

Resources

KodeKloud CKA course (best structured content), killer.sh (2 sessions included with exam purchase), kubernetes.io/docs (practice navigating it — it is your lifeline in the exam). Passing score: 66%.