在一个分布式软件系统中，一个构件失去了与另一个远程构件的连接。在系统修复后，连接于30秒之内恢复，系统可以重新正常工作直到其它故障发生。这一描述体现了软件系统的（）。
- A.安全性
- B.可用性
- C.兼容性
- D.性能
正确答案及解析
正确答案
解析
可用性(availability)是系统能够正常运行的时间比例。经常用两次故障之间的时间长度或在出现故障时系统能够恢复正常的速度来表示。
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