单选题Which of the following security mitigation techniques is the MOST effective against zero-day attacks?（）AUpdate antivirus definitionsBMAC filteringCEffective security policiesDUser awareness training
单选题
Which of the following security mitigation techniques is the MOST effective against zero-day attacks?（）
A
Update antivirus definitions
B
MAC filtering
C
Effective security policies
D
User awareness training
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