KCNA Exam Guide 2026: cost, format, passing score and study plan

KCNA exam facts

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KCNA exam domains and weights

How many questions and how long is KCNA?

The KCNA exam has 60 questions and a time limit of 90 minutes, as stated in the Linux Foundation's exam instructions and checked on 23 October 2026. Delivery is: online, proctored, multiple-choice. That leaves roughly 90 seconds per question if you spread the time evenly. The questions are spread over 4 exam domains, and the published domain weights tell you how much of the paper each domain accounts for, so heavier domains deserve proportionally more of your practice time. GoldenKube is an independent community project, not affiliated with or endorsed by CNCF or The Linux Foundation, so confirm every figure on the official page before you book.

KCNA questions are conceptual: expect to recognise which Kubernetes object, component or ecosystem project fits a described situation, rather than to read or write a manifest.

Pacing matters more than raw speed on a multiple-choice paper. A simple routine is to answer what you know on the first pass, flag anything that needs a second look, and use the remaining minutes on the flagged questions rather than stalling early. With about 90 seconds on average per question, a question that has taken more than twice that is a good candidate for flagging.

Practice should mirror the exam shape: one question at a time, a committed answer, then the explanation. GoldenKube's practice mode works this way and brings missed questions back until you answer them correctly, which is closer to how recall is tested than rereading notes.

What is the passing score for KCNA?

The Linux Foundation lists the KCNA passing score as 75% (checked 23 October 2026). Treat the percentage as the target and aim comfortably above it in practice. The heavier a domain is weighted, the more of the exam it decides, so neglecting a large domain is the costliest way to fall short. The largest KCNA domain, Kubernetes Fundamentals, carries 44% of the exam, and the next, Container Orchestration, carries 28%. Together they make up 72% of the exam, so plan to be reliably above the line in both before you book, and treat every smaller domain as the place to pick up the remaining points.

Use the passing score as a calibration tool. When you practise, track your accuracy per domain instead of one overall number, and treat a domain you keep missing as a gap to close before booking. A single good overall percentage can hide a weak, heavily weighted domain.

The official certification page is the authority for the passing score and can change, so read it again on the week you register. The source links below point to the exact pages this guide was checked against.

How much does KCNA cost and how long is it valid?

The KCNA exam fee is $250 (USD), listed on the official certification page and checked 23 October 2026. The certification is valid for 2 years, so plan for it to lapse unless you renew it; the official page is the place to confirm how renewal works. Prices and bundles can change, so treat the figure here as the list price on the checked date and confirm it at checkout. KCNA is one of the certifications in the Golden Kubestronaut program that GoldenKube helps you prepare for. Budget for the exam fee itself, and remember that a certification only helps while it is current, so decide up front when you would renew it and what that renewal would cost.

Validity is the part people forget when planning a program such as Golden Kubestronaut: with 2 years of validity, the order you take the exams in decides when each one needs renewing, and taking KCNA early in a long sequence can mean renewing it before you finish the rest.

KCNA and KCSA are the two multiple-choice exams among the five Kubestronaut core certifications; CKA, CKAD and CKS are hands-on and have their own fees on their own pages.

GoldenKube practice itself is free: 10 guest answers, then a free account, no credit card. The exam fee is paid to the Linux Foundation, not to GoldenKube.

How hard is KCNA?

KCNA is an entry-level exam whose difficulty is breadth, not depth. Kubernetes Fundamentals (44%) and Container Orchestration (28%) make up 72% of the paper, and both ask you to recognise objects and components instead of configuring them. The risk is not one hard topic but the smaller domains: Cloud Native Application Delivery (16%) and Cloud Native Architecture (12%) pull in GitOps, CI/CD, service mesh, observability and the CNCF project landscape, which cluster experience alone does not teach. Candidates who run Kubernetes daily tend to be strong on the big two and thin on the small two, while candidates who read about the ecosystem without touching a cluster show the reverse. This guide does not quote pass rates; the practical test is explaining why each wrong option in a practice question is wrong, in every domain.

KCNA is an associate-level exam, and its difficulty is breadth rather than depth. Kubernetes Fundamentals (44%) and Container Orchestration (28%) account for 72% of the paper, so most of your marks come from knowing the core Kubernetes objects and how they relate: Pods, Deployments, Services, namespaces, the control plane components and what each one is responsible for. You are rarely asked to write configuration; you are asked to recognise the right concept for a described situation.

The two smaller domains, Cloud Native Application Delivery (16%) and Cloud Native Architecture (12%), are where candidates with only Kubernetes experience slip. They test vocabulary around the wider ecosystem: what GitOps and CI/CD pipelines are for, what a service mesh or an observability tool does, and what the CNCF is and how projects mature. These questions reward reading about the landscape once, carefully, instead of relying on day-to-day cluster work.

Because the questions are conceptual, practise with explanations on: when you miss a question, the useful part is the one-sentence reason the right option fits and the others do not. That habit transfers directly to new wordings of the same concept on the real paper.

Registration, scheduling and retakes

Register through the official KCNA certification page on the Linux Foundation site. Delivery is described as: Online, proctored, multiple-choice. Prerequisites: None. Retake policy: One retake per exam purchase if a passing score is not achieved. These statements were checked on 23 October 2026 against the pages listed under Resources. The rules for identification, the testing environment and rescheduling are set by the Linux Foundation, so read its candidate documentation for the current requirements before you book. Book a slot only after your practice results are stable across every domain, leave a buffer between your last study session and the exam, and keep the confirmation details somewhere you can find them quickly.

Plan the order of the five core exams now: CKS lists passing CKA as a prerequisite on its own page, while KCNA states none, so KCNA can be taken at any point.

A retake is covered by the stated policy, but treat the first attempt as the real one and use the weights above to decide where your remaining study time goes.

A 3-week KCNA study plan

This 3-week plan orders the KCNA domains by how much of the exam they carry and how much each one builds on the others. Each week has one focus, and the table lists the domains it covers. The intent is to read the official material for a domain, then answer practice questions on it, then read the explanations for every miss. Adjust the pace to your background: someone who already works with the technology daily can compress it, and someone new to it should stretch each week. Keep a short list of the questions you missed and reread it on the last day, since repeated misses mark the real gaps.

Spend roughly the same share of time on a domain as it carries in the exam, then add extra time wherever your practice accuracy is lowest. In GoldenKube you can focus on a single domain, or let smart practice pick the domain where you are weakest.

In the last few days, stop learning new material. Run mixed practice, review only the questions you missed, and sleep properly before the exam.

Resources

Start from the official KCNA certification page, which holds the current domain list, the fee and the booking link. The certification page also points to the official curriculum, published as a PDF in the CNCF curriculum repository; read it as the authoritative list of what can be asked. For the subject itself, use the project's own documentation, Kubernetes documentation (kubernetes.io), which is the best single source for terminology and behaviour. Then use GoldenKube practice questions on the KCNA practice page to test recall, and revisit the documentation for every explanation that surprised you. Official pages are the source for facts that can change, such as the fee and the format, so check them again in the week you book. The links are listed below this section, and each fact in this guide was checked against them on the date shown above.

• Official KCNA certification page and exam details on the Linux Foundation site.
• Official KCNA curriculum PDF in the CNCF curriculum repository.
• Kubernetes documentation (kubernetes.io).
• GoldenKube KCNA practice questions, free to start with 10 guest answers.

Frequently asked questions