下列进程状态变化中，______是不可能发生的。
- A.等待→运行
- B.运行→等待
- C.等待→就绪
- D.运行→就绪
正确答案及解析
正确答案
解析
通常一个进程应有3种基本状态：就绪状态、运行状态和等待状态(或称阻塞状态)。进程的3个状态的转换如下图所示。
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