問題文
The database maintains one baseline automatically, and an administrator can also create another kind by hand. What distinguishes the automatically maintained one?
選択肢
- It covers the last snapshot only so its contents are replaced whenever the next snapshot reaches the repository.
- It holds the repository data that lies inside the retention period so the window moves on in time and the older data is dropped.
- It covers the schedule on which future baselines will be created so its contents describe a rule rather than collected data.
- It covers a period that an administrator picked as representing the system at its best so its contents stay the same until it is dropped by hand.