只有得到允许的人才能修改数据，并且能够判别出数据是否已被篡改，这体现了信息安全的（）。
- A.机密性
- B.可用性
- C.完整性
- D.可控性
正确答案及解析
正确答案
解析
信息安全的基本要素有：
(1)机密性：确保信息不暴露给未授权的实体或进程。
(2)完整性：只有得到允许的人才能修改数据，并且能够判别出数据是否已被篡改。
(3)可用性：得到授权的实体在需要时可访问数据，即攻击者不能占用所有的资源而阻碍授权者的工作。
(4)可控性：可以控制授权范围内的信息流向及行为方式。
(5)可审查性：对出现的网络安全问题提供调查的依据和手段。
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