试题与答案

一个CPU面对多个进程的情况,关于这个问题,下列说法不正确的是() A.一个CPU只

题型:单项选择题

题目:

一个CPU面对多个进程的情况,关于这个问题,下列说法不正确的是()

A.一个CPU只能执行一个进程。执行另一个进程时需将前一个进程从内存中清除以腾出空间给后一个进程使用;

B.一个CPU可以采取分时处理的办法,执行多个进程,而使每个进程都感觉其独占CPU;

C.一个CPU执行多个进程时,必须要解决进程切换前后的状态保护问题,即一个进程在此前被中断执行,而当其恢复时应做到在哪里中断则在哪里恢复;

D.进程被CPU中断运行时,该进程可能仍旧在内存中保留,只是其状态被改变为“就绪”或者“等待”。

答案:

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参考答案:错

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