【名词&注释】
有效性(effectiveness)、可用性、解决方案(solution)、软件工程(software engineering)、软件配置管理(software configuration management)、可执行(executable)、第二天(second day)
[单选题]某软件系统投入运行10天,计划运行时间为每早8点至晚6点。第二天(second day)上午发生一次失效,故障恢复用了1小时。第4天上午发生一次失效,故障恢复用了4小时。第9天上午发生一次失效,故障恢复用了1小时。根据《软件工程产品质量GB/16260-2006》,该软件系统的有效性(或可用性,availability)为()。
A. A.98%
B. B.95%
C. C.80%
D. D.94%
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学习资料:
[单选题]The uncertainty of an event is measured by its probability of occurrence and is inversely proportional to that. The more uncertain an event is. The more information is required to resolve uncertainty of that event. The amount of information is measured in ()
A. A、possibility
B. B、bits
C. C、bps
D. D、probability
[单选题]实施软件配置管理包括4个最基本活动,其中不包括()
A. A、配置项标识
B. B、配置项优化
C. C、配置状态报告
D. D、配置审计
[单选题]下列哪项是最为廉价的存储解决方案()
A. A、SAN
B. B、NAS
C. C、单个IDE设备
D. D、单个RAID5阵列
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