Refer to the following URL to explore the documents, notes, and any other resources for this course: https://github.com/kodekloudhub/certified-kubernetes-administrator-course Kubernetes API Version References: https://kubernetes.io/docs/concepts/overview/kubernetes-api/ Here is a link to kubernetes documentation if you want to learn more about this topic (You don’t need it for the exam though): https://github.com/kubernetes/community/blob/master/contributors/devel/sig-architecture/api-conventions.md https://github.com/kubernetes/community/blob/master/contributors/devel/sig-architecture/api_changes.md Backup References: https://kubernetes.io/docs/tasks/administer-cluster/configure-upgrade-etcd/#backing-up-an-etcd-cluster https://github.com/etcd-io/website/blob/main/content/en/docs/v3.5/op-guide/recovery.md https://www.youtube.com/watch?v=qRPNuT080Hk