The operations team is responsible for defining which data gets backed up and how often. Which type of backup process backs up files that have been modified since the last time all data was backed up?

A.
Incremental process

B.
Full backup

C.
Partial backup

D.
Differential process

Explanation:
D: Backups can be full, differential, or incremental, and are usually used in some type of combination with each other. Most files are not altered every day, so to save time and
resources, it is best to devise a backup plan that does not continually back up data that has not been modified. Backup software reviews the archive bit setting when making its
determination on what gets backed up and what does not. If a file is modified or created, the file system sets the archive bit to 1, and the backup software knows to back up that file. A
differential process backs up the files that have been modified since the last full backup; in other words, the last time all the data was backed up. When the data needs to be restored,
the full backup is laid down first, and then the differential backup is put down on top of it.
A is incorrect because an incremental process backs up all the files that have changed since the last full or incremental backup. If a company experienced a disaster and it used the
incremental process, it would first need to restore the full backup on its hard drives and lay down every incremental backup that was carried out before the disaster took place. So, if
the full backup was done six months ago and the operations department carried out an incremental backup each month, the restoration team would restore the full backup and start
with the older incremental backups and restore each one of them until they are all restored.
B is incorrect because with a full backup, all data is backed up and saved to some type of storage media. During a full backup, the archive bit is cleared, which means that it is set to
0. A company can choose to do full backups only, in which case the restoration process is just one step, but the backup and restore processes could take a long time.
C is incorrect because it is not the best answer to this question. While a backup can be a partial backup, it does not necessarily mean that it backs up all the files that have been
modified since the last time a backup process was run.