单项选择题
软件可用性是指在某个给定时间点上程序能够按照需求执行的概率,其定义为()
A.可用性=MTTF/(MTTF+MTTR)x100%
B.可用性=MTTR/(MTTF+MTTR)x100%
C.可用性=MTTF/(MTTF-MTTR)x100%
D.可用性=MTTR/(MTTF-MTTR)x100%
点击查看答案&解析
单项选择题
A.可用性=MTTF/(MTTF+MTTR)x100%
B.可用性=MTTR/(MTTF+MTTR)x100%
C.可用性=MTTF/(MTTF-MTTR)x100%
D.可用性=MTTR/(MTTF-MTTR)x100%