Once you are selected for the Certified Kubernetes Application Developer (CKAD) Certification (LFD 259) course, you will get a free voucher to start going through the LFD 259 training course on the Linux Foundation learning portal. This will prepare you for the CKAD certification exam. Here, you will be assigned to a learning group alongside other learners.
Upon completion of the LFD 259 course, you will participate in a series of CKAD examination prep sessions. After this, you will pay US $285 (discounted from US $445) for the CKAD via a dedicated Linux Foundation portal to get access to the exam.
The training course takes about 5-6 weeks to complete, and the certification phase follows immediately. The prerequisite is to have a good knowledge and experience in Kubernetes.