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CKA — Certified Kubernetes Administrator

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CKA — Certified Kubernetes Administrator

CNCF Linux Foundation CKA — Kubernetes cluster admin (performance-based)

20-question mock145 min66% pass markInternational

Single questions with instant feedback — no timer, learn as you go.

See official guidance ↓
Start here · Official guidance

From practice to the real exam

01
Confirm fit
CKA is performance-based — you solve real tasks in live Kubernetes clusters. Strong fit for SREs, platform engineers, and DevOps practitioners.
02
Use the official curriculum
Linux Foundation publishes the exam curriculum (kubernetes/website CHANGELOG). Five domains: storage (10%), troubleshooting (30%), workloads/scheduling (15%), cluster architecture (25%), services and networking (20%).
03
Practise in killer.sh
Exam registration includes two free killer.sh simulator sessions — these are harder than the real exam and are widely considered the best prep.
04
Schedule on PSI
15–20 performance-based tasks, 2 hours. Fee USD 395 (includes one free retake). Pass mark 66%.
05
Renew every 3 years
CNCF / Linux Foundation certifications are valid for 3 years. Recertify by retaking the current exam.
Official resources
Heads up: Links open in a new tab and go to government / awarding-body sites. AceMark is not affiliated — always verify deadlines and fees on the official page.
Exam blueprint

What this exam covers

5 topics · drawn across your practice and mock
01Workloads & scheduling
30%6 questions
02Cluster architecture
25%5 questions
03Services & networking
20%4 questions
04Troubleshooting
15%3 questions
05Storage
10%2 questions
Your study path
Master this exam, topic by topic
Drill one topic at a time. After each session you'll see where you went wrong and can retake until you've got it.
Questions per session
View full mastery board →
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Frequently asked questions

Is the CKA — Certified Kubernetes Administrator practice test free?

Yes. The core CKA — Certified Kubernetes Administrator practice on AceMark is free to start — no credit card needed. Sign in (takes 10 seconds) if you'd like to track your progress, save attempts, and unlock the Mentor. Otherwise, browse and explore questions without an account.

How many questions are in the CKA — Certified Kubernetes Administrator quiz?

Each CKA — Certified Kubernetes Administrator attempt draws 20 questions and runs for about 120 minutes under realistic timed conditions.

Can I retake the CKA — Certified Kubernetes Administrator test, and are the questions randomised?

Yes. Every attempt pulls a fresh, randomised set of questions, so you can't memorise your way through — you retake it until you genuinely know the material.

What score do I need to pass the CKA — Certified Kubernetes Administrator?

The pass mark used in this simulation is 66%. AceMark scores every attempt instantly and shows which topics to review.