单选题Which of the following are necessary components of a Multi-Level Security Policy? 下面哪项是多级安全策略的必要组成部分吗？（）ASensitivity Labels for only objects and Mandatory Access Control.适合于唯一客体的敏感标记和强制访问控制。BSensitivity Labels for subjectsobjects andasystem highevaluation.适合于主体与客体的敏感标记以及“高级别系统”评价。CSecurity Clearances for subjectsSecurity Labels for objects and Mandatory Access Control.主体安全声明适合于唯一客体的敏感标记和强制访问控制。DSensitivity Labels for subjectsobjects and Discretionary Access Control.适合于主体与客体的敏感标记和自主访问控制。
单选题
Which of the following are necessary components of a Multi-Level Security Policy? 下面哪项是多级安全策略的必要组成部分吗？（）
A
Sensitivity Labels for only objects and Mandatory Access Control.适合于唯一客体的敏感标记和强制访问控制。
B
Sensitivity Labels for subjects&objects andasystem highevaluation.适合于主体与客体的敏感标记以及“高级别系统”评价。
C
Security Clearances for subjects&Security Labels for objects and Mandatory Access Control.主体安全声明&适合于唯一客体的敏感标记和强制访问控制。
D
Sensitivity Labels for subjects&objects and Discretionary Access Control.适合于主体与客体的敏感标记和自主访问控制。
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