高等继续教育 / 计算机专业英语
正确率：100%
题型描述: 单选题
Which of the following is NOT an effective countermeasure to viruses. _ _ _ _ _ _ _ _ _ _
A.Updating operating system regularly to patch security holes.
B.Marking regular backups of data on different file system.
C.Installing and regularly updating anti-virus software.
D.Using different operating system on the same file system.
Which of the following is NOT an effective countermeasure to viruses. _ _ _ _ _ _ _ _ _ _
A.Updating operating system regularly to patch security holes.
B.Marking regular backups of data on different file system.
C.Installing and regularly updating anti-virus software.
D.Using different operating system on the same file system.
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