机房的防辐射处理（防止有用信息以各种途径辐射出去）是涉及信息系统安全的技术，它归属于信息的（ ）。
- A.可用性
- B.完整性
- C.保密性
- D.可控性
正确答案及解析
正确答案
解析
本题考查信息系统安全的基本概念。信息安全涉及到信息的保密性(Confidentiality)、完整性(Integrity)、可用性(Availability)、可控性(Controllability)等。综合起来，就是要保障电子信息的有效性。保密性就是对抗对手的被动攻击，保证信息不泄漏给未经授权的人。完整性就是对抗对手主动攻击，防止信息被未经授权的篡改。可用性就是保证信息及信息系统确实为授权使用者所用。可控性就是对信息及信息系统实施安全监控。机房的防辐射处理(防止有用信息以各种途径辐射出去)，它归属于信息保密性。
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