威胁效果是指威胁成功后，给网络系统造成的影响。电子邮件炸弹能使用户在很短的时间内收到大量电子邮件，严重时会使系统崩溃、网络瘫痪，该威胁属于（ ）。
- A.欺骗
- B.非法访问
- C.拒绝服务
- D.暴力破解
正确答案及解析
正确答案
解析
电子邮件炸弹能使用户在很短的时间内收到大量电子邮件，严重时会使系统崩溃、网络瘫痪。这时系统无法提供正常的服务，相关资源无法访问，这种威胁属于拒绝服务。
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