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CKA vs CKS: Which Certification Should You Get?

CKA is a foundational certification for Kubernetes administrators, focusing on core cluster management and operations. CKS is an advanced certification that builds upon CKA, specializing in securing Kubernetes clusters and containerized applications. CKS is ideal for those looking to deepen their expertise in cloud-native security and requires CKA as a prerequisite.

Verdict

CKA is a foundational certification for Kubernetes administrators, focusing on core cluster management and operations. CKS is an advanced certification that builds upon CKA, specializing in securing Kubernetes clusters and containerized applications. CKS is ideal for those looking to deepen their expertise in cloud-native security and requires CKA as a prerequisite.

Best for Beginners: CKA
Best Salary ROI: CKS
Most In-Demand: CKA
Most Portable: CKA
Category
CKACertified Kubernetes AdministratorCloud Native Computing Foundation (CNCF) / Linux Foundation★ Most Portable
CKSCertified Kubernetes Security SpecialistCloud Native Computing Foundation (CNCF) / Linux Foundation★ Best Salary ROI
Cost
Exam fee$395$395
Study materials$100-$500$100-$500
Renewal cost$395$395
Total (year 1)$495-$895$495-$895
Difficulty
Score
7/10
8/10
Study time2-4 months2-4 (after CKA) months
Exam formatPerformance-based, command-line tasks in a Kubernetes cluster, 2 hoursPerformance-based, command-line tasks in a Kubernetes cluster, 2 hours
Passing score66%66%
PrerequisitesNone required1 required
Salary & Roles
Avg salary$120,000-$160,000/yr$130,000-$170,000/yr
Salary impact+$10,000-$30,000/yr+$15,000-$35,000/yr
Job demandVery HighHigh
Job postings50,000+ monthly (US, for roles mentioning Kubernetes admin/engineer)20,000+ monthly (US, for roles mentioning Kubernetes security)
Ideal for
Kubernetes AdministratorCloud EngineerDevOps EngineerSite Reliability Engineer (SRE)
Kubernetes Security EngineerCloud Security EngineerDevOps Security EngineerSite Reliability Engineer (SRE) with security focus
Top employers
GoogleAmazonMicrosoftIBMRed Hat
GoogleAmazonMicrosoftIBMRed HatCybersecurity firms
Renewal
Valid for3 years3 years
MethodRetake the examRetake the exam
CPE credits——
Domains
Primary domainCloud/Container Orchestration, AdministrationCloud Security, Container Security, Kubernetes Security
Vendor neutral
RecognitionHighly recognized in cloud-native spaceHighly recognized in cloud-native security space
Topics covered
Cluster Architecture, Installation & ConfigurationWorkloads & SchedulingServices & NetworkingStorageTroubleshooting
Cluster Setup HardeningSystem HardeningMinimize Microservice VulnerabilitiesSupply Chain SecurityMonitoring, Logging and Runtime Security

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