Details about the exam passing percentage
https://docs.linuxfoundation.org/tc-docs/certification/faq-cka-ckad#what-score-is-needed-to-pass-the-exam
Details about the exam environment (v1.19 or v1.18)
https://docs.linuxfoundation.org/tc-docs/certification/faq-cka-ckad#what-application-version-is-running-in-the-exam-environment
Details about the number of the exam question
https://docs.linuxfoundation.org/tc-docs/certification/tips-cka-and-ckad#exam-details
Details about platform selection