以下选项中,属于死锁产生必要条件是?
概念:当若干个进程互相竞争对方占有资源,并无限期地等待,导致不能向前推进。死锁是系统一种出错状态,应该尽量预防和避免。
产生原因:供共享系统资源不足,资源分配策略和进程推进顺序不当。
产生必要条件:互斥条件,保持和等待条件,不剥夺条件和环路等待。
在几种不同类型的软件维护中,通常情况下()所占工作量最大。
在()中,项目经理的权力是最小的。
在项目实施的过程中,项目经理通过项目周报中的项目进度分析图表发现机房施工进度有延期风险。项目经理立即组织相关人员进行分析,下达了关于改进措施的书面指令。该指令属于( )
The IT service manager resigns from a project that meets the scheduleand budget. After hiring an alternativenew manager, the team is opposed to the comments from the new manager. The team is at () developmentstages。
()is closet to Deming's definition of Quality。
The IT service manager has learned that a software canimprove the efficiency of current and future project tasks. Because the software is fresh to the Company. Theengineer is not familiar with the software. The lT service manager decides to send the highest level engineero attend the external training course. The proiect manager uses () risk strategies。
The process control charts are used ()。