Rolf created a full backup of a server’s hard drive on Monday. He then created a second
backup tape set that contains only files created on Tuesday. On Wednesday, he backed
up to another set of tapes only files created on that day. This process continues until
Friday, when he restarts the process with an epochal backup. Which type of backup
strategy is this?

A.
Differential

B.
Incremental

C.
Epochal

D.
Duplex

Explanation:
This is an incremental backup scheme. You start with a full backup,
and then only backup the files that changed that day.
Incorrect Answers:
A: This is not a differental. If it was, then the backup on Wednesday would backup thefiles that
changed on both Tuesday & Wednesday, but the problem indicates that onWednesday only
Wednesday data was backed up.
C: Epochal is the same as a full backup, and although a full backup is use in the cycle,Epochal is
not the name for the backup cycle.
D: A duplex backup is when two copies of the backup are created at the same time.Duplex is
usually used when one backup stays onsite and another is shipped offsite fordisaster recovery
procedures.