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Exam 17: Project Management

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Question 71

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Consider the following work breakdown structure: $\begin{array}{l}\begin{array} { l c c c c } &&&\text { Time Estimates (days) }\\\text { Activity } & \text { Precedes } & \text { Optimistic } & \text { Most Likely } & \text { Pessimistic } \\\hline \text { Start } & \text { A, B } & - & - & - \\\text { A } & \text { C, D } & 44 & 50 & 56 \\\text { B } & \text { D } & 45 & 60 & 75 \\\text { C } & \text { E } & 42 & 45 & 48 \\\text { D } & \text { F } & 31 & 40 & 49 \\\text { E } & \text { F } & 27 & 36 & 39 \\\text { F } & \text { End } & 58 & 70 & 82\end{array}\end{array}$ What is the estimated expected (mean) time for activity E?

A) 35 days
B) 36 days
C) 39 days
D) 40 days
E) 45 days

F) A) and B)
G) A) and C)

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Question 72

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A project consists of nine major activities, as shown below. There are three separate paths in the network: a-c-f, b-d-g, and e-h-i. (A) What is expected project duration time? (B) Determine the probability that the project will take more than 35 weeks to complete. (All times are in weeks.) $\begin{array} { l l l } \text { Activity } & \text { Exp. Duration } & \text { Std.Dev. } \\\hline \text { a } & 7 & 1 \\\text { b } & 10 & 1 \\\text { c } & 9 & 2 \\\text { d } & 11 & 2 \\\text { e } & 16 & 2 \\\text { f } & 14 & 2 \\\text { g } & 10 & 2 \\\text { h } & 8 & 1 \\\text { I } & 8 & 2\end{array}$

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(A) Expected duration = 32 wee...

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Question 73

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Which of the following is not typically treated as part of a project life cycle?

Consider the following work breakdown structure: $\begin{array}{r}{\text { Time Estimates (wks) }} \\\begin{array}{lccccc}& \text { Start } & \text { Finish } \\\text { Activity } & \text { Node } \quad\quad& \text { Node } \quad\quad& \mathrm{t}_{0} \quad\quad& \mathrm{t}_{\mathrm{m}} \quad& \mathrm{t}_{\mathrm{p}} \quad\\\hline \text { A } & 1 & 2 & 11 & 20 & 29 \\\text { B } & 2 & 3 & 2 & 5 & 8 \\\text { C } & 2 & 4 & 18 & 30 & 42 \\\text { D } & 3 & 4 & 7 & 10 & 13 \\\text { E } & 1 & 4 & 31 & 40 & 43\end{array}\end{array}$ What is the estimated slack time for activity E?

Project management differs from management of more traditional activities mainly because of: (I) its limited time frame. (II) its unique, defined set of activities. (III) the requirement for use of the appropriate resources. (IV) the need for planning and execution.

In the probabilistic approach to project network analysis, the time estimate annotated t_m for any activity is the:

Once a project is underway, the project manager usually is not responsible for effectively managing:

The main function of dummy activities is to clarify relationships in network diagrams.

Consider the following work breakdown structure: $\begin{array}{cccccc}&\text { Start }&\text { Finish }&&\text { Duration (Days) } \\\text { Activity } & \text { Node } & \text { Node } & \text { Optimistic } & \text { Most Likely } & \text { Pessimistic } \\\hline \text { A } & 1 & 2 & 41 & 50 & 59 \\\text { B } & 1 & 3 & 54 & 60 & 66 \\\text { C } & 2 & 4 & 58 & 70 & 82 \\\text { D } & 3 & 4 & 32 & 41 & 44\end{array}$ What is the estimated expected (mean) time for project completion?

Activity J has a duration of 7 and an earliest finish time of 21. If J's latest start time is 16, this must mean that J's slack is:

A project is represented by the following diagram: The expected duration of this project is:

Consider the following work breakdown structure: $\begin{array} { l c c c c } \text { Activity } & \text { Precedes } & \begin{array} { c } \text { Normal } \\\text { Time (wks) }\end{array} & \begin{array} { c } \text { Crashing } \\\text { Cost } \left( 1 ^ { \text {st } } \right. \text { week) }\end{array} & \left( 2 ^ { \text {nd } } \right. \text { week) } \\\hline\text { Start } & \text { A, B } & - & - & - \\\text { A } & \text { C, D } & 6 & 8 & - \\\text { B } & \text { G } & 4 & 5 & 6 \\\text { C } & \text { E } & 4 & - & - \\\text { D } & \text { F } & 5 & 6 & 6 \\\text { E } & \text { H } & 6 & 8 & 8 \\\text { F } & \text { H } & 6 & 7 & 10 \\\text { G } & \text { I } & 8 & 3 & 5 \\\text { H } & \text { End } & 5 & 12 & 15 \\\text { I } & \text { End } & 6 & 5 & -\end{array}$ What is the total cost of reducing the project to 18 weeks?

Some organizations use a matrix organization to integrate the activities of specialists within a functional framework.

In a project network, the critical path is the sequence of activities which has the:

The probability that the project will go beyond the desired time is equal to one minus the joint probability that all paths will be completed within the desired time.

Deterministic networks use three time estimates-shortest, most likely, and longest-for each activity in order to best determine the activity's estimated time.

Which of the following is not an element of the project management triangle?