题目详情

中级软件设计师,章节练习,软件水平考试《中级软件设计师》计算机基础

  • A.3
  • B.4
  • C.5
  • D.6

正确答案及解析

正确答案
C
解析

这个题目从其描述来看,非常复杂,但结合图来看,其实非常简单,从图a我们可以看出,MOVE执行属于页面0和1,而Data1属于页面2和3,Data2属于页面4和5,另外,结合图b可以看出,编号为1、2、3、4、5的页面都不在内存中,如果要取这几个页面的数据,必须先将其置换进内存,因此总共是5次缺页中断,其中取指令产生1次缺页中断,取Data1和Data2操作数分别产生2次缺页中断。

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