Which of the following backup procedure would only copy files that have changed since the last backup was made?

Which of the following backup procedure would only copy files that have changed since the last backup was made?
A . Incremental backup
B . Daily backup
C . Differential backup
D . Full backup

Answer: A

Explanation:

The backup procedure that would only copy files that have changed since the last backup was made is an incremental backup. This is because an incremental backup is a type of backup that only copies the files that have been created or modified since the previous backup, whether it was a full or an incremental backup. An incremental backup helps to reduce the backup time and storage space, as well as the recovery time, as only the changed files need to be restored. The other options are not backup procedures that would only copy files that have changed since the last backup was made, but rather different types of backup procedures that copy files based on different criteria, such as daily backup (B), differential backup C, or full backup (D).