EMC Information Storage Fundamentals — Question 5

An organization performs a full back up every Sunday and cumulative back ups on the remaining days. On Thursday, a data corruption occurs that requires a data restoration from the backup copies.
How many backup copies are required to perform this restoration?

Answer options

• A. 1
• B. 2
• C. 3
• D. 4

Correct answer: B

Explanation

To restore data after a corruption on Thursday, the latest cumulative backup from Wednesday and the full backup from Sunday are needed, totaling two backups. The other options are incorrect because 1 would not include both necessary backups, while 3 and 4 exceed the requirement for this specific restoration scenario.