Certified Kubernetes Security Specialist (CKS) Practice Test
Prepare for the Certified Kubernetes Security Specialist exam with free practice tests covering Kubernetes cluster security, hardening, supply chain security, microservice protection, and runtime monitoring. Each 20-question test uses a proportional study timer based on the official 2-hour performance-based exam and the 17-task simulator reference.
Mixed Set — CKS Practice Tests
Questions are distributed across all 6 CKS curriculum domains according to the current Linux Foundation blueprint. Higher-weighted areas such as microservice vulnerabilities, supply chain security, and runtime security appear more frequently in mixed practice.
Domain Wise — CKS Mock Tests
Target individual Kubernetes security domains with focused practice. Each mock test contains 20 questions designed to reinforce the command-line decisions, configuration checks, and security controls that matter in the real performance-based CKS exam.
About the Certified Kubernetes Security Specialist Exam
Everything you need to know about the CKS exam format, prerequisites, curriculum, and career value for Kubernetes security professionals.
What Is the CKS?
The Certified Kubernetes Security Specialist (CKS) is a performance-based certification created by the Cloud Native Computing Foundation and The Linux Foundation. It validates the ability to secure container-based applications and Kubernetes platforms across build, deployment, and runtime stages.
The certification is aimed at Kubernetes administrators, cloud security engineers, DevOps engineers, SREs, platform engineers, and security professionals who work with production Kubernetes environments. CKS skills map to roles such as Kubernetes Security Engineer, Cloud Security Engineer, Platform Security Engineer, DevSecOps Engineer, Site Reliability Engineer, and Container Security Specialist.
Cybersecurity and cloud-native security skills remain strong career signals. The U.S. Bureau of Labor Statistics reports a median annual wage of $124,910 for information security analysts in May 2024 and projects 29% employment growth from 2024 to 2034, much faster than the average for all occupations.
Exam Format (2026)
Testing method: Online, remotely proctored, performance-based exam.
Tasks: Multiple command-line Kubernetes security tasks; not a fixed multiple-choice question exam.
Duration: 2 hours.
Question types: Hands-on tasks using Kubernetes, kubectl, YAML manifests, security tools, configuration review, hardening, and runtime investigation.
Passing score: 67% or above.
Exam fee: $445 USD for exam-only registration, including one free retake.
Platform version: Kubernetes v1.34, with updates aligned to recent Kubernetes minor releases.
Eligibility Requirements
Required prerequisite: Candidates must have taken and passed the Certified Kubernetes Administrator (CKA) exam before attempting CKS.
CKA status: The CKA does not need to be active, but it must have been achieved.
Recommended background: Practical Kubernetes administration experience, comfort with kubectl, YAML, Linux command-line work, containers, networking, and security controls.
Exam eligibility: Registration includes 12 months of exam eligibility.
Retake: One free retake is included with the exam purchase.
Certification validity: CKS is valid for 2 years and can be renewed by retaking and passing the exam.
CKS Domain Weights — Current Exam Curriculum
The current CKS curriculum covers six Kubernetes and cloud-native security domains. The percentages below show the official Linux Foundation exam weight for each area.
| Domain | Topic | Weight |
|---|---|---|
| Domain 1 | Cluster Setup | 15% |
| Domain 2 | Cluster Hardening | 15% |
| Domain 3 | System Hardening | 10% |
| Domain 4 | Minimize Microservice Vulnerabilities | 20% |
| Domain 5 | Supply Chain Security | 20% |
| Domain 6 | Monitoring, Logging and Runtime Security | 20% |
How Our Practice Tests Are Designed
Performance-aware practice — The real CKS is hands-on, so these practice questions emphasize practical reasoning: what to inspect, what to harden, which Kubernetes control applies, and how to recognize insecure configurations.
Blueprint-aligned mixed sets — Mixed tests follow the official six-domain weighting. Domains weighted at 20%, including microservice vulnerabilities, supply chain security, and monitoring, logging, and runtime security, appear more often than lower-weighted areas.
Transparent timer math — The official CKS exam is 2 hours. The included simulator reference contains 17 questions, which equals about 7.1 minutes per item. Each 20-question test is therefore paced at about 141 minutes to mirror hands-on exam pressure.
Domain-specific reinforcement — Use domain-wise tests to strengthen weak areas such as RBAC, service accounts, NetworkPolicies, Pod Security Standards, secrets, SBOMs, image scanning, audit logs, and runtime detection.
CKS Exam Preparation Tips
Study Strategy
Build real clusters: Practice on Kubernetes clusters where you can apply NetworkPolicies, RBAC, Pod Security Standards, audit policies, seccomp, AppArmor, and runtime monitoring controls yourself.
Master kubectl speed: The exam rewards fast command-line execution. Use aliases, dry-run YAML generation, explain output, context switching, and documentation search until they feel automatic.
Prioritize high-weight domains: Microservice vulnerabilities, supply chain security, and runtime security are each 20% of the exam. Study them deeply without ignoring cluster setup, hardening, and system hardening.
Test-Taking Strategy
Read task context carefully: CKS tasks often specify a namespace, context, pod, node, or policy target. Confirm the target before changing resources.
Use a first-pass approach: Complete the tasks you know quickly, flag difficult work mentally, and return if time remains. Time pressure is one of the biggest CKS challenges.
Validate every fix: After applying a manifest or security change, verify with kubectl get, describe, logs, auth can-i, events, or tool output before moving on.
Frequently Asked Questions
Ready to Test Your CKS Knowledge?
Start with a mixed set to measure your readiness, then use domain-wise tests to strengthen specific Kubernetes security skills.
Start CKS Practice Test 1 →
