评估信息系统安全时，需要对风险项进行量化来综合评估安全等级。如果对于需求变化频繁这一事件，其发生概率为0.5，产生的风险影响值为5，则该风险项的风险值为（ ）。
- A.10
- B.5.5
- C.4.5
- D.2.5
正确答案及解析
正确答案
解析
本考题考查的知识点为风险值计算知识。出自《系统集成项目管理工程师教程（第2版）》第十八章项目风险管理，全书第560页。
风险值=发生概率×风险影响值
5×0.5=2.5所以选D。
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