单选

● 以下关于CPU 与主存之间增加高速缓存(Cache)的叙述中,错误的是 (4) 。

(4)

  • A. Cache扩充了主存储器的容量
  • B. Cache可以降低由于CPU 与主存之间的速度差异造成的系统性能影响
  • C. Cache的有效性是利用了对主存储器访问的局部性特征
  • D. Cache中通常保存着主存储器中部分内容的一份副本
参考答案
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