Exam format

CKS

What the CKS exam looks like

CKS has 15 to 20 hands-on tasks in 120 minutes, hands-on tasks against live clusters, open book against allowed documentation. Every figure on this page is read from the official exam page and linked to it.

How many questions, and how long

Linux Foundation / CNCF states 15 to 20 hands-on tasks for CKS, with a time limit of 120 minutes. That is about 8 minutes a task.

Linux Foundation / CNCF publishes a range rather than a fixed count, so the pace above assumes the low end of it. At the top of the range you have less time a task.

What the questions look like

Entirely hands-on: tasks in a terminal against live clusters, open book against allowed documentation. No multiple choice at all.

Linux Foundation, CKS exam details ↗

What passes

The passing score for CKS is 67 percent.

What that score means, and how it is calculated

What this means for practice

Our CKS practice exams are assembled to the published domain weightings and sat against a 120-minute clock, in exam conditions or in study mode. Every answer shows the official page it was checked against.

Keep reading

  • CKS practice questions

    Free sample questions with the full explanation on every answer.

  • Free CKS practice test

    10 original questions, playable now. No account, no card.

  • CKS passing score

    The exact cut score, what kind of number it is, and the retake terms.

  • How hard is CKS?

    An honest difficulty read from the format, the clock and the weights.

  • What CKS costs

    The voucher price, the retake, and what renewal costs across the cycle.

  • CKS guide

    Who it is for, study plans by experience level, and whether it is worth it.

Compared with

Side by side on cost, difficulty, and which one to take first.

Every guide and cost breakdown, by vendor

Practice CKS for free while you decide

Original questions written from the published objectives, with the concept, the reasoning, and a note on every wrong option. No account needed to start.

Start free CKS questions