Hello,
i’m doing KCNA course at the moment on kodekloud, and in the container orchestration Security part; all the time the course refer to certificate part that it’s missing in the course so i can’t understand well the concept that are introduced in relation with certificate topic evrytime we refer to 
Thank’s in advance for helping correcting this issue
Hello
This lecture is shared with the CKA exam course, where the lecture on setting up certificates for the various components actually is.
Knowing how to set up certificates is not required knowledge to appear for KCNA exam, hence the referred lecture is not found in this course. All that is required for KCNA is where certificates might be used, not how to configure them.