During a routine maintenance visit to a client, an administrator noticed that the last full backup did not complete. Which of the following should the administrator do FIRST?

Scheduling an incremental backup before understanding why the full backup failed is premature and might result in an incomplete or corrupted backup, especially if the underlying issue persists.

Inspecting backup report logs is the critical first step to diagnose why the full backup failed, as logs provide specific error messages and details about the incomplete operation. Without understanding the root cause from the logs, any subsequent backup attempts might also fail or exacerbate the problem.

Scheduling another full backup immediately without investigating the initial failure could lead to another incomplete backup and waste resources if the root problem is not addressed.

Inspecting alert notification settings is a secondary step; while important for future notifications, it does not directly help diagnose why the past backup failed in the first place.