Which of the following is NOT a type of backup?

The correct choice, which identifies the type that is not a recognized backup method, is the term 'Comprehensive.' In the context of data backup strategies, full, incremental, and differential backups are well-established categories.

A full backup refers to the process of copying all the data from a source to a backup location, ensuring that every file is captured at one point in time. Incremental backups only save data that has changed since the last backup (whether that was a full backup or another incremental backup), which makes it a space-efficient option. A differential backup, on the other hand, saves all changes made since the last full backup, allowing for a quicker restoration process compared to restoring from a series of incremental backups.

'Comprehensive' does not fit within these established backup categories and is not commonly utilized in the context of data backup terminology. Instead, it may imply a broad or extensive scope, but it does not specifically denote a backup technique. Recognizing distinct backup types is essential for effective data protection and play a crucial role in disaster recovery and business continuity planning.