An administrator wants to minimize the amount of time needed to perform backups during the
week. It is also acceptable to the administrator for restoration to take an extended time frame.
Which of the following strategies would the administrator MOST likely implement?
A.
Full backups on the weekend and incremental during the week
B.
Full backups on the weekend and full backups every day
C.
Incremental backups on the weekend and differential backups every day
D.
Differential backups on the weekend and full backups every day
Explanation:
A full backup is a complete, comprehensive backup of all fi les on a disk or server. The full backup
is current only at the time it’s performed. Once a full backup is made, you have a complete archive
of the system at that point in time. A system shouldn’t be in use while it undergoes a full backup
because some fi les may not get backed up. Once the system goes back into operation, the
backup is no longer current. A full backup can be a time-consuming process on a large system.
An incremental backup is a partial backup that stores only the information that has been changed
since the last full or the last incremental backup. If a full backup were performed on a Sunday
night, an incremental backup done on Monday night would contain only the information that
changed since Sunday night. Such a backup is typically considerably smaller than a full backup.
Each incremental backup must be retained until a full backup can be performed. Incremental
backups are usually the fastest backups to perform on most systems, and each incremental
backup tape is relatively small.