Certified Kubernetes Administrator (CKA) Practice Test

The command used to verify if a user has permissions to perform specific actions in a Kubernetes cluster is "kubectl auth can-i". This command helps administrators and users understand whether they have the right permissions for a certain action based on their current authentication and authorization context.

When using this command, you can specify the verb (such as get, watch, create, delete) and the resource type (such as pods, services, deployments) you want to check against. For example, executing "kubectl auth can-i create pods" will return "yes" or "no" reflecting whether the user has the ability to create pods within the cluster.

This command is particularly useful in troubleshooting permissions issues and ensuring that RBAC (Role-Based Access Control) policies are properly set without needing to dig into configuration files or role bindings.

Other options do not exist as valid Kubernetes commands for this purpose. Therefore, the clarity and precision of "kubectl auth can-i" in checking permissions make it the correct answer for this question.