After a few years of playing with Kubernetes, I would like to get a certification for my experience.

Draft your studying plan
It is not easy to ensure your-self following the original studying plan. So I pick an online course ( https://www.udemy.com/share/101WmEAEMcdVZVRHgB/ ) at https://udemy.com.
It offers a roadmap to the enroller started from zero knowledge and missing fundamental understanding.
For instance, it mentions the SSL and networking fundamentals as markup sides for the people who do not have a solid understanding of it and I think it is great. As senior people like me working for several years might feel shame to search those basic 101.
Also, it comes with interactive exercises after each topic not only play a video for you. You can always go back to any topic to refresh your memory.
TL;DR;
Draft your study plan
Pick the right online course for CKA
Keep your hand dirty
Get familiar with `k8s.io` and `kubectl -h`
Before the exam:
- Go to the toilet before entering the exam
- Network connection ( WIFI ) and a good webcam
- A glass cup with clear water
- Passport
- Play with Minkube with all the topic
- Enter the exam room from their page 15 mins early before the reserved time as you need to work with the officer to walk through the exam instructions
Importance:
- Play with vim and get used to it.
- Remember the keyword of each topic in the `k8s.io` searching
- Always use notepad to track your mindset for each question and logging the progress of all the questions.
Tips:
- Imperative ( command-based ) and declarative ( YAML file-based ) always helps you a lot.
- Using `kubectl explain pod.spec.containers — recursive` to list all the fields in a resource.
- Skip the question if you already spread too many times.
Useful link:
The problem(s) you might have with Minikube:
Remember to keep your hand dirty with Minikube and always go back to any topic to refresh the memory.