【计算机类职业资格】PMP资格认证考试-项目时间管理(二)及答案解析.doc

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1、PMP 资格认证考试-项目时间管理(二)及答案解析(总分：20.00，做题时间：90 分钟)一、单项选择题(总题数：20，分数：20.00)1.If task A has seven days of free float and 15 days of total float and the early start date is delayed 5 days, what does this do to the completion date of the project?A) Pushes the finish date out ten days.B) Delays the early sta

2、rt date of the next dependent task five days.C) Allows the project to finish five days earlier.D) The finish date doesnt change.（分数：1.00）A.B.C.D.2.If Task B has 15 days of free float and 25 days of total float, and the early start date of Task B is delayed 30 days, how is the project affected?A) The

3、 next dependent tasks start date will be delayed 15 days.B) The duration of the task will be shortened 15 days.C) The completion date of the project will be pushed out 5 days.D) Both A and C.（分数：1.00）A.B.C.D.3.If Task C has 0 days of free float and 0 days of total float, what does this mean to the p

4、roject?A) The project does not have adequate lead and lag times built in.B) The task is on the critical path.C) The duration of the task should be compressed.D) The dates for the task are not accurate.（分数：1.00）A.B.C.D.4.A master schedule is delayed or an executive presentation. What information must

5、 the PM gather to complete this schedule?A) Dates of major activities.B) Key milestones.C) Summary level task descriptions.D). All of above.（分数：1.00）A.B.C.D.5.What is one of the key problems with using crashing rather than fast tracking to compress project duration?A) Personnel overlap.B) Budget con

6、straints.C) Sub-dividing critical path tasks to work in parallel.D) Finish to start relationships are modified.（分数：1.00）A.B.C.D.6.Time planning _.A) involves determining how the various tasks required to completed the project, and the activities within the tasks, will be accomplished in terms of seq

7、uence and dependencyB) refers to setting up the vacation schedule for each member of the project teamC) is the sole responsibility of the project scheduling departmentD) is having a well staked scheduling department（分数：1.00）A.B.C.D.7.A prerequisite of effective time management is _.A) knowing the di

8、ctated project completion dateB) having the most advanced software package for project planning, scheduling, and controlC) having a good project WBS which identifies the major project deliverables and tasks, and the person responsible for each of themD) having a well staffed scheduling department（分数

9、：1.00）A.B.C.D.8.Slack time is _.A) a way of decreasing the time required for decision makingB) not used to level resourcesC) the same as float timeD) used to assist in developing a timetable of the major components of a schedule（分数：1.00）A.B.C.D.9.Network planning (PERT/ CPM/PDM) methods _.A) are usu

10、ally too complicated for practical use on most projectsB) require highly trained specialists for effective useC) always require computer support to be practicalD) are based on flow charts and they allow observation of what happens to the project schedule when changes occur to a tasks start and stop

11、dates（分数：1.00）A.B.C.D.10.The critical path _.A) is the earliest series of events and activities which have the highest technical risk in the projectB) is the series of events and activities which have the highest cost in the projectC) is the longest chain of events and activities from todays date to

12、 the end of the project, if the plan represented by the current network plan is executedD) is an interesting concept, but is has little significance to the project functional managers assigned to the project（分数：1.00）A.B.C.D.11.Trending is _.A) the practice of keeping up with the latest fashions in p

13、roject management (newest software packages, terms, concepts, etc)B) recording and evaluating the trends regarding schedule accomplishment, resource expenditures, and forecasting the impacts of the trends on the future work and ultimate completion of the projectC) generally impractical and not very

14、useful on larger projectsD) when the project manager determines the degree to which the schedule is meeting expectations（分数：1.00）A.B.C.D.12.The work breakdown structure(WBS) used in the classical sense is a practical methodology used for _.A) adding activities to the projectB) expanding the scope of

15、 the projectC) developing a responsibility matrix for work assignmentsD) delineating project work effort into discrete and logical sub-elements（分数：1.00）A.B.C.D.13.The expected time TE used in the PERT algorithm is calculated using the following equation _.A) (a+3m+b)/6B) (a+4m+b)/6C) (a+5m+b)/6D) (a

16、+m+b)/3Note: A major assumption for all network methods is that activity durations are statistically dependent and where a=most optimistic time, b=most pessimistic time, m=most likely time.（分数：1.00）A.B.C.D.14.In order to compute the probability of completing a project on time, the standard deviation

17、s (SD) of each activity must be known. These can be calculated using the following expression _.A) SD=(b-a)/6B) SD=b-a/6C) SD=(a-b)/6D) SD=(b-a)/12Note: The definitions of a=most optimistic time and b=most pessimistic time. Use the following information for questions 10 and 11 for the following is d

18、uration data related to an activity in a time scale network.Optimistic time=a=10 daysPessimistic time=b=20 daysMost likely time=m=12 days（分数：1.00）A.B.C.D.15.Using this data, what is the expected time for this activity?A) 12 days.B) 13 days.C) 17 days.D) 16 days.（分数：1.00）A.B.C.D.16.The standard devia

19、tion for the activity is _.A) 1.66 daysB) 5.00 daysC) 3.88 daysD) 6.05 days（分数：1.00）A.B.C.D.17.The difference between a project and a program is that the _.A) program has many projectsB) Project is typically longer than a programC) program is another name for processD) both B and C（分数：1.00）A.B.C.D.1

20、8.If you were crashing a project, you would focus attention on _.A) all non-critical tasksB) only those on the critical path without concern for costC) accelerating performance by minimizing costD) the critical task with the least cost first（分数：1.00）A.B.C.D.19.What is the key purpose of using projec

21、t control?A) Ensuing the project stays on track.B) To have a good WBS.C) To satisfy the customer.D) To assist in developing the upper management reports.（分数：1.00）A.B.C.D.20.Gantt charts are great for _.A) showing task relationshipsB) tracking actual versus plannedC) good communications with the cust

22、omers, management, and project teamD) B and C（分数：1.00）A.B.C.D.PMP 资格认证考试-项目时间管理(二)答案解析(总分：20.00，做题时间：90 分钟)一、单项选择题(总题数：20，分数：20.00)1.If task A has seven days of free float and 15 days of total float and the early start date is delayed 5 days, what does this do to the completion date of the project?A

23、) Pushes the finish date out ten days.B) Delays the early start date of the next dependent task five days.C) Allows the project to finish five days earlier.D) The finish date doesnt change.（分数：1.00）A.B.C.D. 解析：由于自由时差和总时差都大于 5，所以最早开始时间延迟 5 天将不影响项目完成。如果任务 A 有 7 天的自由时差和 15 天的总时差，最早开始时间延迟了 5 天，这对项目的完成有什

24、么样的影响?A) 将完工期限推迟 10 天。B) 推迟下一个相关任务最早开始日期 5 天的时间。C) 使项目提前 5 天完成。D) 完工时间不变。2.If Task B has 15 days of free float and 25 days of total float, and the early start date of Task B is delayed 30 days, how is the project affected?A) The next dependent tasks start date will be delayed 15 days.B) The duration

25、 of the task will be shortened 15 days.C) The completion date of the project will be pushed out 5 days.D) Both A and C.（分数：1.00）A.B.C.D. 解析：如果任务 B 有 15 天的自由时差和 25 天的总时差，并且最早开始时间延迟了 30 天，对项目有什么影响?A) 下一个相关的任务会延迟 15 天。B) 任务会缩短 15 天完成。C) 项目会推迟 5 天完成。D) A 和 C。3.If Task C has 0 days of free float and 0 da

26、ys of total float, what does this mean to the project?A) The project does not have adequate lead and lag times built in.B) The task is on the critical path.C) The duration of the task should be compressed.D) The dates for the task are not accurate.（分数：1.00）A.B. C.D.解析：如果任务 C 具有零天的自由时差和零天的总时差，对项目意味着什

27、么?A) 项目不具有充足的推迟和提前时限。B) 任务在关键路径上。C) 任务的周期应该被压缩。D) 任务的日期不准确。4.A master schedule is delayed or an executive presentation. What information must the PM gather to complete this schedule?A) Dates of major activities.B) Key milestones.C) Summary level task descriptions.D). All of above.（分数：1.00）A.B.C.D. 解

28、析：项目经理应该明确在什么时间必须还要做什么?所以应该收集主要活动的日期，主要的里程碑及摘要级别的任务描述。一个主进度计划由于管理汇报而延迟了。项目经理必须收集什么信息以完成这个进度?A) 主要活动的日期。B) 主要的里程碑。C) 摘要级别的任务描述。D) 以上全部。5.What is one of the key problems with using crashing rather than fast tracking to compress project duration?A) Personnel overlap.B) Budget constraints.C) Sub-dividin

29、g critical path tasks to work in parallel.D) Finish to start relationships are modified.（分数：1.00）A.B. C.D.解析：赶工往往会影响的预算。使用赶工而不是快速跟进方法来压缩项目周期时，产生的主要问题之一是什么?A) 人员重叠。B) 预算限制。C) 细分主线任务以便于并行处理。D) 修改了开始到结束的关系。6.Time planning _.A) involves determining how the various tasks required to completed the project

30、, and the activities within the tasks, will be accomplished in terms of sequence and dependencyB) refers to setting up the vacation schedule for each member of the project teamC) is the sole responsibility of the project scheduling departmentD) is having a well staked scheduling department（分数：1.00）A

31、. B.C.D.解析：时间计划_。A) 涉及如何将不同的任务按顺序和相互关系结合在一起来完成整个项目B) 指的是为项目成员制定休假计划C) 是项目进度规划部门的唯一责任D) 是拥有一个良好的进度规划团队7.A prerequisite of effective time management is _.A) knowing the dictated project completion dateB) having the most advanced software package for project planning, scheduling, and controlC) having a

32、 good project WBS which identifies the major project deliverables and tasks, and the person responsible for each of themD) having a well staffed scheduling department（分数：1.00）A.B.C. D.解析：WBS 是范围基线的一部分，范围基线是定义活动的重要输人，因此也是时间管理的前提条件。有效时间管理的先决条件是_。A) 了解口述的项目完工日期B) 拥有最先进的，用于项目规划、进度计划和控制的软件工具C) 拥有一个良好的 WB

33、S 来指明主要的项目可交付成果，任务和责任人D) 拥有一个良好的进度规划团队8.Slack time is _.A) a way of decreasing the time required for decision makingB) not used to level resourcesC) the same as float timeD) used to assist in developing a timetable of the major components of a schedule（分数：1.00）A.B.C. D.解析：松弛时间_。A) 是一种减少决策支持时间的方式B) 不

34、是用来平衡资源的C) 和浮动时间的概念是一样的D) 用来帮助完成进度计划主要部分的时间表9.Network planning (PERT/ CPM/PDM) methods _.A) are usually too complicated for practical use on most projectsB) require highly trained specialists for effective useC) always require computer support to be practicalD) are based on flow charts and they allo

35、w observation of what happens to the project schedule when changes occur to a tasks start and stop dates（分数：1.00）A.B.C.D. 解析：网络计划方法(计划评审技术/关键路径法/前导图)_。A) 对于大部分项目的使用来说通常太过复杂B) 需要受过良好训练的专家才能有效使用C) 总需要计算机支持以实用化D) 以流程图为基础，并当任务开始和结束日期发生变化时，可以显性化地了解项目进度的执行情况10.The critical path _.A) is the earliest series

36、 of events and activities which have the highest technical risk in the projectB) is the series of events and activities which have the highest cost in the projectC) is the longest chain of events and activities from todays date to the end of the project, if the plan represented by the current networ

37、k plan is executedD) is an interesting concept, but is has little significance to the project functional managers assigned to the project（分数：1.00）A.B.C. D.解析：关键路径_。A) 是最早一系列在项目中具有最高技术风险的事件和活动B) 是一系列在项目中具有最高成本的事件和活动C) 如果按现有网络计划执行的话，是项目生命期中最长的一系列事件和活动D) 是一个有趣的概念，对于项目的职能经理来说影响不大11.Trending is _.A) the

38、practice of keeping up with the latest fashions in project management (newest software packages, terms, concepts, etc)B) recording and evaluating the trends regarding schedule accomplishment, resource expenditures, and forecasting the impacts of the trends on the future work and ultimate completion

39、of the projectC) generally impractical and not very useful on larger projectsD) when the project manager determines the degree to which the schedule is meeting expectations（分数：1.00）A.B. C.D.解析：使用排除法。趋势是_。A) 在项目管理中保持和潮流的一致(最新的软件包，术语，概念，等等)B) 记录并评价进度完成，资源花费以及对未来工作和项目最终结果产生影响的趋势C) 对于大项目来说通常不十分实用D) 项目经理

40、决定进度满足期望的程度12.The work breakdown structure(WBS) used in the classical sense is a practical methodology used for _.A) adding activities to the projectB) expanding the scope of the projectC) developing a responsibility matrix for work assignmentsD) delineating project work effort into discrete and log

41、ical sub-elements（分数：1.00）A.B.C.D. 解析：WBS 用来把项目工作人工量分成逻辑上独立的子元素。正统意义下的工作分解结构是一种方法学，用来_。A) 为项目添加活动B) 扩大项目的范围C) 为工作分配完成责任矩阵D) 把项目工作人工量分成逻辑上独立的子元素13.The expected time TE used in the PERT algorithm is calculated using the following equation _.A) (a+3m+b)/6B) (a+4m+b)/6C) (a+5m+b)/6D) (a+m+b)/3Note: A ma

42、jor assumption for all network methods is that activity durations are statistically dependent and where a=most optimistic time, b=most pessimistic time, m=most likely time.（分数：1.00）A.B. C.D.解析：在 PERT 算法中使用的期望时间 TE 使用_计算。A) (a+3m+b)/6B) (a+4m+b)/6C) (a+5m+b)/6D) (a+m+b)/3注意：所有网络方法的一个主要假设是所有活动周期在统计上是互

43、相依赖的，其中，a=最乐观时间，b=最悲观时间，m=最可能时间。14.In order to compute the probability of completing a project on time, the standard deviations (SD) of each activity must be known. These can be calculated using the following expression _.A) SD=(b-a)/6B) SD=b-a/6C) SD=(a-b)/6D) SD=(b-a)/12Note: The definitions of a=

44、most optimistic time and b=most pessimistic time. Use the following information for questions 10 and 11 for the following is duration data related to an activity in a time scale network.Optimistic time=a=10 daysPessimistic time=b=20 daysMost likely time=m=12 days（分数：1.00）A. B.C.D.解析：为了计算按时完成项目的概率，必须

45、知道每个活动的标准方差。可以通过_计算相应的方差。A) SD=(b-a)/6B) SD=b-a/6C) SD=(a-b)/6D) SD=(b-a)/12注意：定义 a=最乐观时间，b=最悲观时间。使用以下的条件来解答第 10 和第 11 题。乐观时间=a=10 天悲观时间=b=20 天最可能时间=m=12 天15.Using this data, what is the expected time for this activity?A) 12 days.B) 13 days.C) 17 days.D) 16 days.（分数：1.00）A.B. C.D.解析：(10+412+20)/6=13

46、。使用上面的信息，这个活动的期望时间是多少?A) 12 天。B) 13 天。C) 17 天。D) 16 天。16.The standard deviation for the activity is _.A) 1.66 daysB) 5.00 daysC) 3.88 daysD) 6.05 days（分数：1.00）A. B.C.D.解析：活动的标准方差是_。A) 1.66 天B) 5.00 天C) 3.88 天D) 6.05 天17.The difference between a project and a program is that the _.A) program has many

47、 projectsB) Project is typically longer than a programC) program is another name for processD) both B and C（分数：1.00）A. B.C.D.解析：项目群和项目之间的区别是_。A) 项目群由很多项目组成B) 项目一般比项目群时间长C) 项目群又称为过程D) B 和 C18.If you were crashing a project, you would focus attention on _.A) all non-critical tasksB) only those on the

48、critical path without concern for costC) accelerating performance by minimizing costD) the critical task with the least cost first（分数：1.00）A.B.C.D. 解析：起工时要权衡成本与进度，确定如何以最小的成本最大限度地压缩进度。如果你要赶工的话，你应该集中精力于_。A) 所有不重要的任务B) 不惜成本，仅考虑关键路径的任务C) 通过减少成本来加速绩效D) 首先考虑成本最低的关键任务19.What is the key purpose of using pro

49、ject control?A) Ensuing the project stays on track.B) To have a good WBS.C) To satisfy the customer.D) To assist in developing the upper management reports.（分数：1.00）A. B.C.D.解析：项目控制的目的是确保项目按步进行。使用项目控制的主要目的是什么?A) 确保项目按步进行。B) 建立良好的 WBS。C) 满足顾客。D) 帮助完成上层管理报告。20.Gantt charts are great for _.A) showing task relationshipsB) tracking actual versus plannedC) good communications with t