Which
of the following backup types backs up files that have been added and all data that have been
modified since the most recent backup was performed?
A.
Differential backup
B.
Incremental backup
C.
Daily backup
D.
Full backup
Explanation:
Incremental backup type backs up files that have been added and all data that have
been modified since the most recent backup was
performed.
Incremental backup backs up files that are created or changed since the last full or incremental
backup. Incremental backup provides a faster
method of backing up data than most other backup methods. Restoring data from an incremental
backup requires the last full backup and all
subsequent incremental backups. Incremental backups must be restored in the same order as they
were created.
If any incremental backup in the incremental backup set is damaged or becomes corrupt, the data
backed up after corruption cannot be
restored.
Answer option D is incorrect. Full backup, also known as normal backup, involves backing up the
entire hard disks and files of a machine.When the full backup type is set up, a user should choose which files, folders, and hard disks are to
be backed up. After a full backup is
performed, all archive bits are reset to 0.
Answer option A is incorrect. Differential backup backs up files that are created or changed since the
last full backup. It requires minimum
space to backup data. Differential backup requires only the last full backup tape and the last
differential backup tape to restore data. It is
faster as compared to full backup.
Answer option C is incorrect. There is no such type of backup as daily backup.