In the GFS backup tape rotation plan, which type of backup is the Grandfather?

A.
copy

B.
normal

C.
differential

D.
incremental

Explanation:
Industry Standard Architecture – Student Guide 2 – Page 302
Grandfather-Father-Son tape rotation The Grandfather-Father-Son (GFS) tape rotation scheme is
the most commonly used and requires a weekly backup capacity of at least double the server
storage capacity. It uses three levels of backup to provide redundancy and security. Among other
things, this scheme allows for different levels of data retention. The system administrator can
select which generation of tapes to store temporarily and which to archive.
GFS backup requires the following:
Monthly grandfathers
Weekly fathers
Daily sons

Example
The system administrator typically performs a full backup every Monday (father) and incremental
backups on Tuesdays, Wednesdays, and Thursdays (sons). The administrator performs another
full backup at the end of the week (father) and another at the end of the month (grandfather).