Final answer:
An image-level backup is a type of backup that captures a snapshot of the entire volume, including the OS, boot files, installed applications, and data. It is useful for quickly restoring a system in case of a failure or corruption.
Step-by-step explanation:
Backing up a complete volume, including the OS, boot files, all installed applications, and all the data, is called an image-level backup. This type of backup creates a snapshot of the entire volume, capturing everything on it. It is useful for quickly restoring a system in case of a hardware failure or software corruption.