A full backup is performed every Sunday and incremental backups are performed daily Monday
through Saturday. How many tapes would be required to perform a full restore if a complete failure
occurred on Thursday before the incremental backup?
A.
2
B.
3
C.
4
D.
5
WHY
Derek:
A total loss would require a full restore. A “Full” backup was done on Sunday – this backs up everything, to one tape (within capacity). Incremental backups where then carried out Mon, Tue, Wed. An incremental backup will only backup what has been changed since the last backup. Therefore in the case of a total loss we need to restore using the Full backup(Sun), followed by each incrementals, in the correct order (Mon then Tue then Wed).
Hope this helps,
John
Thank you. Great explanation.