Which of the following commands would be used to verify the status of the VDO module?

The command "systemctl status kvdo" is used to verify the status of the VDO (Virtual Data Optimizer) module as it interacts directly with the system's initialization system, systemd. By executing this command, you can obtain detailed information about the VDO service, including whether it is running, its active state, and any logs associated with its recent operations.

This choice is appropriate because systemd manages the services on the system, and "kvdo" refers specifically to the kernel module for VDO. This allows administrators to quickly check if the VDO service is functioning as expected.

The other options do not provide the correct approach for verifying the VDO module's status. "vdo status" is not a recognized command for checking service status within the context of systemd. "vdo check" may imply checking the integrity or health of a VDO volume, but it does not directly address the module's operational status. Lastly, "yum info vdo" is a command for retrieving information about the VDO package, rather than the service status. It gives details such as package version and dependencies but does not indicate whether the VDO service is currently running or not.