Multiple choice technology mainframe How many number of versions a generartion of a gdg can have at the max? 1 99 999 No limit Reveal answer Fill a bubble to check yourself A Correct answer Explanation In IBM mainframe MVS/zOS, a Generation Data Group (GDG) can contain up to 255 generations (or 999 in newer releases), but each specific generation (e.g., G0001V00) can have only 1 version at a time.