扩展名为（ ）文件会受到宏病毒攻击。
- A.exe]
- B.com
- C.xls
- D.dll
正确答案及解析
正确答案
解析
本题考查计算机病毒基础知识。宏病毒攻击对象是Office文档，主要感染文件有Word、Excel文档。并且会驻留在Normal模板上，这类文件扩展名为：doc、dot、xls。宏病毒是一种寄存在文档或模板宏中计算机病毒。一旦打开这样文档，其中宏就会被执行，于是宏病毒就会被激活，转移到计算机上，并驻留在Normal模板上。此后，所有自动保存文档都会“感染”上这种宏病毒，而且如果其他用户打开了感染病毒文档，宏病毒又会转移到他计算机上。
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