IBM Mainframe Interview Questions

1) What is Control Area ?

A group of Control Intervals makes up a control area. Max size - 1 cylinder, Min size - 1 Track.

2) What is Control Interval Split ?

Not enough space in the control interval the control interval split is happens.

3) What is Control Area Split ?

If no free CI's found in CA it will go for the split of control area.

4) What is GDG ?

Generation Data Groups or GDG's are a group of data sets which are related to each other chronologically and functionally.