CKAD Certification FAQ: Questions and Answers

This FAQ answers the most frequently asked questions about the CKAD certification. All information comes from the official Linux Foundation documentation.

TL;DR: The CKAD lasts 2 hours, requires 66% to pass, has no prerequisites, and remains valid for 2 years. Two attempts are included with registration.

This topic is covered in the LFD459 Kubernetes for Developers training.

CKAD Prerequisites Questions

Does the CKAD require prerequisites?

No, the CKAD has no official prerequisites. Unlike the CKS which requires a valid CKA, you can take the CKAD without prior certification. However, practical experience with Kubernetes is strongly recommended.

Do I need to take the CKA before the CKAD?

No, it's not necessary. The CKA and CKAD target different profiles. The CKAD is for developers, the CKA for administrators. You can take the CKAD directly if your role is development-oriented.

What experience is recommended for the CKAD?

The Linux Foundation recommends:

• 2-3 months of practice on a Kubernetes cluster
• Knowledge of containerization (Docker)
• Experience with YAML and CLI tools
• Familiarity with at least one programming language

Exam Format Questions

How long is the CKAD exam?

The exam lasts 2 hours. You must solve 15-20 practical tasks on a real Kubernetes cluster.

What is the minimum score to pass the CKAD?

The minimum required score is 66% (Linux Foundation FAQ). This score is slightly lower than the CKS (67%) but identical to the CKA.

How many questions does the exam contain?

The exam contains 15-20 practical tasks. Each task has different weight based on its complexity. Simple tasks are worth fewer points than complex tasks.

Is the exam in English only?

Yes, the CKAD exam is available only in English. The kubernetes.io documentation accessible during the exam is also in English.

Can I use documentation during the exam?

Yes, you can access kubernetes.io, as well as its subdomains during the exam. However, you cannot open other tabs or use external resources.

Cost and Registration Questions

How much does the CKAD exam cost?

The CKAD exam costs $445 USD (2026 rate). This price includes:

• 2 exam attempts (2 hours each)
• 2 Killer.sh sessions (official simulator, 36h each)
• 12 months to schedule the exam

For more details, see our CKAD certification cost page.

Are there discounts on the CKAD exam?

Yes, the Linux Foundation regularly offers promotions:

• Black Friday / Cyber Monday: 30-40% discount
• Training + exam bundles
• Enterprise rates for bulk purchases

Can I get CKAD funding through my employer?

Yes, many companies fund technical certifications. SFEIR group training organizations are Qualiopi certified for training actions. Contact your OPCO to explore funding possibilities.

Validity and Renewal Questions

How long is the CKAD certification valid?

The CKAD certification is valid for 2 years (Linux Foundation FAQ). Note: some sources indicate 3 years, but the official duration is indeed 2 years.

How do I renew my CKAD certification?

After expiration, you must retake the full exam at standard rate. There is no simplified renewal procedure. Plan retaking before expiration to maintain your certification.

My CKAD certification expires soon, what to do?

You have two options:

1. Retake the CKAD before expiration to maintain continuity
2. Wait for expiration and retake when necessary

The certification remains on your Credly profile even after expiration, with validity date mention.

Failure and Retake Questions

What happens if I fail the CKAD?

Two attempts are included with your registration (Linux Foundation). You can reschedule the exam upon receiving your results. Analyze your results to identify areas to work on before the second attempt.

How long to wait before retaking?

You can reschedule immediately. However, wait until you've practiced enough in areas where you lost points. Generally, 2-4 weeks of targeted preparation is sufficient.

Do I have access to my detailed results?

Yes, you receive a report indicating your performance by domain. Use this report to target your revision before retaking.

Preparation Questions

How long does it take to prepare for the CKAD?

Typical preparation lasts 8-12 weeks with 1-2 hours of daily practice. This time may vary based on your prior Kubernetes experience.

See our CKAD preparation guide for a detailed schedule.

What training is recommended for the CKAD?

The official training is LFD459 Kubernetes for Application Developers (Linux Foundation Training), delivered by SFEIR Institute in 3 days.

Register for LFD459 training

Is Killer.sh useful for preparation?

Yes, the Killer.sh simulator is included with the exam and reproduces real conditions. Questions are slightly harder than the exam, making it excellent preparation. Aim for 75%+ before taking the exam.

Exam Day Questions

What are the technical prerequisites?

To take the CKAD, you need:

• Chrome or Chromium browser
• Working webcam
• Active microphone
• Stable internet connection
• Closed room and clear desk

Can I use multiple screens?

No, only one screen is allowed during the exam. Multi-screen configurations are not permitted.

Are kubectl aliases allowed?

Yes, you can define aliases during the exam. The alias alias k=kubectl is often recommended. However, memorize these aliases as you'll need to reconfigure them at the start of the exam.

Questions About Differences with Other Certifications

What's the difference between CKAD and CKA?

See our CKA vs CKAD comparison for more details.

Can I take CKAD and CKA at the same time?

Yes, both certifications are independent. You can prepare them in parallel if you have 3-4 months of intensive preparation.

Is the CKAD a prerequisite for the CKS?

No, only the CKA is a prerequisite for the CKS (Linux Foundation FAQ). The CKAD and CKS are independent.

Take Action

Have more questions about the CKAD? The LFD459 training answers all your questions and effectively prepares you for certification.

Contact our advisors to define your CKAD path.