An administrator has just added a CD-ROM drive (/dev/hdd) to a system and added it to the administrator's fstab. Typically the administrator can use which of the following commands to mount media in…

This command specifies both the device and mount point; while it would work, it bypasses the convenience of `fstab` and uses a generic `/dev/cdrom` which might not be the specific device `/dev/hdd`.

This command only specifies the device; without a mount point, `mount` would attempt to mount to a default location (often a temporary directory) or fail, not `/mnt/cdrom` as intended via `fstab`.

This command explicitly defines the filesystem type and both device and mount point, which is redundant if `fstab` is already configured for the mount.

If an entry for a device and its mount point (`/dev/hdd` to `/mnt/cdrom`) is properly configured in `/etc/fstab`, the `mount` command can be executed with just the mount point as an argument. The system will then consult `/etc/fstab` to find the associated device, filesystem type, and options to perform the mount.

`automount` refers to the `autofs` service for automatic mounts and is not the command used for manually mounting an `fstab` entry; `/mnt/hdd` is also an incorrect device path.