有两台交换机分别安装在某幢办公楼的第4层和第5层，同属于财务部门的6台PC分别连接在这两台交换机的端口上。为了提高网络安全性和易管理性，最好的解决方案是(21)。

(75) are individuals and organizations that are actively involved in the project，or whose interests may be affected as a result of project execution or project completion.

Estimating schedule activity costs involves developing an (74) of the cost of the resources needed to complete each schedule activity．

The project (73) is a key input to quality planning since it documents major project deliverables，the project objectives that serve to define important stakeholder requirements，thresholds，and acceptance criteria．

(72) is ameasurable，verifiable work poduct such as specification．Feasibility study report，detail document，or working prototype．

The (71) defines the phases that connect the beginning of a project to its end.

客户已经正式接收了项目，该项目的项目经理下一步工作将是(70)。

在进行项目风险定量分析时，可能会涉及到(68)。

人力资源风险、进度计划风险、成本风险和质量风险是管理项目时可能出现的4种风险。从客户的角度来看，如果没有管理好(69)，将会造成最长久的影响。

有效的项目风险管理首先要求(67)。

如果项目实际进度比计划提前20%，实际成本只用了预算成本的60%，首先应该(66)。