In a certain cache system, the modified cache block is written to main memory only when the block is replaced. All of the following are used to describe this policy EXCEPT(71).
【正确答案】 D
【答案解析】解析:本题考查专业英语应用能力。参考译文:在Cache系统中,当Cache数据块需要被置换时,系统就将这个被修改了的cache数据块保存到主存中,所有选项中不能用来描述这个策略的是write-through。