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Everything needed to plan for the CKS (CKS) exam: number of questions, time limit, passing score, and the official domain weightings. For the domain checklist, see the CKS study guide. For a week-by-week plan, see the CKS study plan.
Facts last checked . Vendor links for this exam are on the materials page. To correct a figure, use the corrections policy.
CKS (CKS) is a Professional level Linux Foundation certification exam with 17 questions in 120 minutes (last checked 2026-10-19), requiring 67% to pass. It covers 6 domains: Minimize Microservice Vulnerabilities (20%); Supply Chain Security (20%); Monitoring, Logging and Runtime Security (20%); Cluster Hardening (15%); System Hardening (15%); Cluster Setup (10%).
Exam code
CKS
Questions
17
Time limit
120 min
Passing score
67%
Official domains
6
Level
Professional
Provider
Linux Foundation
Practice questions
300+ on CertStud
| Domain | Weight | What it covers |
|---|---|---|
| Minimize Microservice Vulnerabilities | 20% | Secure containerized applications |
| Supply Chain Security | 20% | Secure container supply chain |
| Monitoring, Logging and Runtime Security | 20% | Detect and respond to security events |
| Cluster Hardening | 15% | Secure cluster components and access |
| System Hardening | 15% | Minimize host OS footprint and secure Linux |
| Cluster Setup | 10% | Configure Kubernetes security from installation |
Percentages reflect published official domain weightings. Prerequisite knowledge and current scoring rules are confirmed on the Linux Foundation exam page before booking.
The CKS figure on file is 17 questions. Last checked 2026-10-19. Confirm the current figure with Linux Foundation before you book.
The CKS time limit on file is 120 minutes. Last checked 2026-10-19. Confirm the current figure with Linux Foundation before you book.
The CKS exam requires 67% to pass. Last checked 2026-10-19. Confirm the current figure with Linux Foundation before you book.
The CKS exam covers 6 official domains: Cluster Setup (10%), Cluster Hardening (15%), System Hardening (15%), Minimize Microservice Vulnerabilities (20%), Supply Chain Security (20%), Monitoring, Logging and Runtime Security (20%).
Minimize Microservice Vulnerabilities carries the heaviest weighting on the CKS exam at 20% of the exam. Secure containerized applications
CKS is the exam code for CKS (Certified Kubernetes Security Specialist), a Professional level Linux Foundation certification exam covering 6 domains.
The CKS passing figure on file is 67%. Plan for 17 questions across 120 minutes, weighted by domain: 20% Minimize Microservice Vulnerabilities, 20% Supply Chain Security, 20% Monitoring, Logging and Runtime Security, 15% Cluster Hardening, 15% System Hardening, 10% Cluster Setup. Last checked 2026-10-19. Confirm the current figure with Linux Foundation before you book.
CertStud offers free CKS practice questions with detailed explanations, plus full-length practice exams and flashcards at https://certstud.com/certifications/linux-foundation/cks. Start with 10 free questions at https://certstud.com/try-free.