单选

●一进程刚获得3个主存块的使用权,若该进程访问页面的次序是{1,3,2,1,2,1,5,1,2,3}。当采用先进先出调度算法时,发生缺页次数是 (20) 次,而采用LRU算法时,缺页数是 (21) 次。

 (20) ,(21)

  • A.3    &n
  • bsp;  B.4    
  • C.5    
  • D.6
参考答案
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