問題文
An organization compares sending its isolated copy to a managed cloud vault, replicating it to a cluster that only it operates, and writing it to media that leaves the site. Why does the guidance describe these as three answers rather than one best answer?
選択肢
- Each of them buys isolation at a different cost in time to recover and in effort to operate, so the requirement for how fast the copy has to come back decides between them.
- Each of them buys isolation from a different attacker, so the profile of the threat that is expected decides between the three of them in practice.
- Each of them buys isolation for a different class of data, so the sensitivity of the records which are being protected here decides between the three of them in any given design.
- Each of them buys isolation for a different period, so the number of years that the copy has to be kept is the one thing that decides between the three of them.