A user's computer performs scheduled backups that back up the data to a network server on the following schedule:
Full backup: Friday
Incremental backup: Monday, Wednesday
System state backup: Tuesday, Thursday
Backups are performed in the evening. The hard disk fails on Thursday afternoon.
Which backup or backups should you restore?
1. Friday, Wednesday, Tuesday, Monday
2. Tuesday, Wednesday
3. Friday, Wednesday
4. >>Friday, Monday, Wednesday
Explanation : You should first restore the full backup taken on Friday. Next you should restore each incremental backup in order. An incremental backup backs up all data that has changed since the last backup and resets the Archive flag on the files. The Archive flag determines whether the file needs to be backed up.
You should not restore Tuesday and then Wednesday. A system state backup does not back up user data. Therefore, restoring the Tuesday backup will not serve as a base for installing incremental data backups.
You should not install Friday and then Wednesday. An incremental backup backs up only the information that has changed since the last full, differential, or incremental backup. Therefore, the Wednesday backup will only back up files that have changed since Monday.
There is no need to restore the Tuesday backup. Any changes that were reflected in the Tuesday backup will also be reflected in the Wednesday backup. Also, you should restore incremental backups in the order in which they are taken.
Objective: Operating Systems
