What is the CKS exam?

The Linux Foundation CKS exam is designed for professionals who want to demonstrate their skills in securing Kubernetes environments. CKS stands for Certified Kubernetes Security Specialist. It's a practical test, not just theory. During the exam, candidates must solve practical tasks in a real Kubernetes cluster. This ensures they know how to secure workloads, clusters, and networks.

The CKS exam builds upon your prior Kubernetes knowledge. Before attempting the exam, you must already hold a valid CKA certification. This is because the exam assumes an understanding of cluster administration. The CKS certification delves into security topics such as pod security policies, network isolation, runtime security, and supply chain risk. It's a highly sought-after credential for anyone looking to grow in the field of cloud native security.

Is CKS harder than CKA?

Students often ask, " Is the Linux Foundation CKS exam harder than the CKA?" The answer depends on your background. The CKA exam tests your ability to manage and troubleshoot Kubernetes clusters. In contrast, the CKS requires proficiency in Kubernetes security. You must already understand how Kubernetes works before diving into security tasks.

Some consider the CKS exam more challenging because it requires rapid, hands-on application under time pressure. For example, you might be asked to configure AppArmor, securely manage secrets, or restrict network access in just a few minutes. If you compare the CKA exam with the CKAD exam, the CKAD exam focuses more on application development tasks, while the CKA exam includes administration content. The CKS exam goes a step further, applying security principles across all areas.

What is the passing score for the CKS exam?

The passing score for the Linux Foundation CKS certification is 66%. This may sound easy, but the exam is challenging because it's hands-on. Every point counts. Candidates have two hours to complete complex scenarios. This isn't a multiple-choice test; it measures what you actually type and execute in a live cluster.

Because this is an open-book exam, you can consult the official Kubernetes documentation during the exam. However, this doesn't mean it's easy. Time is the biggest challenge. You'll need a strong grasp of commands and YAML syntax. The exam rewards speed, accuracy, and a applied understanding of Kubernetes security concepts. Preparation through lab exercises and practice exams can greatly increase your chances of achieving this score.

What is the salary for a Linux Foundation Certified System Administrator (LFCS)?

Salary often motivates people to pursue Kubernetes certifications. While CKS focuses on security, many also look at the LFCS path. The average annual salary for a Linux Foundation Certified System Administrator is$70,000 到$120,000, depending on the role and location.

Those who continue on to obtain the CKA, CKAD, and ultimately the CKS typically see higher opportunities. Companies highly value cloud native expertise due to its scarcity and critical importance. If you compare CKAD vs. CKA, developers with the CKAD certification may move into DevOps or cloud native roles, while administrators with the CKA certification often advance to senior infrastructure positions. The CKS exam adds a much-needed layer of security proficiency to these roles.

If you're preparing, resources like Prepbolt offer guided practice and real-life labs that can help you build the confidence you need.