Certified Kubernetes Administrator (CKA) Practice Test

Performing rolling updates in Kubernetes primarily involves leveraging the `kubectl rollout` command. This command is specifically designed to manage and track the progress of application updates. When you need to update a deployment, the `kubectl rollout` command facilitates a smooth transition from the current version of your application to the new one, ensuring that there is minimal or no downtime during the update process.

The `kubectl rollout` command provides various subcommands, like `kubectl rollout status`, which helps in checking the status of the rollout, and `kubectl rollout undo`, which allows you to revert to a previous version in case the new deployment causes issues. This functionality is key for maintaining application availability and stability, particularly in production environments.

In contrast, while the `kubectl apply` command can also trigger updates by applying a modified configuration file, it does not provide the same level of control and monitoring specifically designed for rollouts as the `kubectl rollout` command does. The `kubectl create` command is mainly used to create new resources rather than updating existing ones. Lastly, the `kubectl update` command does not exist in the context of Kubernetes, making it an invalid option for performing rolling updates. Thus, the most appropriate choice for managing rolling