Question 1

A disadvantage of activity-on-node diagrams is the occasional need for dummy activities.

Accepted Answer

A) True 
 B)False

Question 2

What is the probability that this project will take more than 10 weeks to complete if the activity means and standard deviations are as shown below? $$\begin{array} { l c c } 
\text { Activity } & \text { Mean } & \text { Std.Dev. } \
\hline 1 - 2 & 5 & 1 \
2 - 3 & 4 & 1 \
1 - 3 & 8 & 1
\end{array}$$

Accepted Answer

Prob(duration exceed

Question 3

A PERT/CPM activity has an optimistic time estimate of three days, a most likely time estimate of eight days, and a pessimistic time estimate of 10 days. The expected time (in days) of this activity is:

Accepted Answer

A)  7.0. 
B)  7.5. 
C)  8.0. 
D)  8.5. 
E)  10.0. 
A)  7.0. 
B)  7.5. 
C)  8.0. 
D)  8.5. 
E)  10.0.

Question 4

Many activities have slack time; if we add these slack times together, this represents the potential improvement in early completion for the project.

Accepted Answer

A) True 
 B)False

Question 5

Consider the following work breakdown structure: $$\begin{array}{r}
\text { Duration Estimates (Days) }\quad\quad\quad\
\begin{array} { l c c c c } 
\text { Activity } & \text { Precedes } & \text { Optimistic } & \text { Most Likely } & \text { Pessimistic } \
\hline \text { Start } & \text { U, V } & - & - & - \
\text { U } & \text { W } & 35 & 50 & 65 \
\text { V } & \text { W, X } & 28 & 40 & 52 \
\text { W } & \text { Z } & 26 & 35 & 44 \
\text { X } & \text { Y } & 28 & 40 & 52 \
\text { Y } & \text { Z } & 26 & 29 & 38 \
\text { Z } & \text { End } & 36 & 60 & 84
\end{array}
\end{array}$$ What is the estimated slack time for activity W?

Accepted Answer

A)  0 days 
B)  25 days 
C)  35 days 
D)  45 days 
E)  85 days 
A)  0 days 
B)  25 days 
C)  35 days 
D)  45 days 
E)  85 days

Question 6

Consider the following work breakdown structure: $\begin{array}{r}
  \text { Duration Estimate (Days) }\quad \quad \quad \quad  \
\begin{array}{lccccc} 
& \text { Start } & \text { Finish } \
\text { Activity } & \text { Node } & \text { Node } & \text { Optimistic } & \text { Most Likely } & \text { Pessimistic } \
\hline \text { A } & 1 & 2 & 9 & 15 & 21 \
\text { B } & 1 & 3 & 13 & 21 & 23 \
\text { C } & 2 & 4 & 6 & 9 & 18 \
\text { D } & 2 & 5 & 23 & 35 & 47 \
\text { E } & 3 & 5 & 19 & 26 & 27 \
\text { F } & 4 & 6 & 23 & 29 & 41 \
\text { G } & 5 & 6 & 14 & 20 & 26 \
\text { H } & 6 & 7 & 2 & 5 & 8
\end{array}\end{array}$ What is the critical path for this project network?

Accepted Answer

Events 1-2

Question 7

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 standard deviation in the time for activity E?

Accepted Answer

A)  1 days 
B)  2 days 
C)  3 days 
D)  4 days 
E)  5 days 
A)  1 days 
B)  2 days 
C)  3 days 
D)  4 days 
E)  5 days

Question 8

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 project completion?

Accepted Answer

A)  160 days 
B)  170 days 
C)  200 days 
D)  210 days 
E)  300 days 
A)  160 days 
B)  170 days 
C)  200 days 
D)  210 days 
E)  300 days

Question 9

The earliest finish time for an activity is equal to the latest finish time minus the activity slack.

Accepted Answer

A) True 
 B)False

Question 10

Gantt charts are most closely associated with

Accepted Answer

A)  JIT. 
B)  PERT. 
C)  MRP. 
D)  MRPII. 
E)  Six Sigma. 
A)  JIT. 
B)  PERT. 
C)  MRP. 
D)  MRPII. 
E)  Six Sigma.

Question 11

Activity 7-8 is directly preceded by two activities-activity 5-7 and activity 6-7. Activity 5-7 has an expected time of five and an ES time of six. Activity 6-7 has an expected time of seven and an ES time of seven. Activity 7-8 has an expected time of 10. The ES for activity 7-8 is:

Accepted Answer

A)  11. 
B)  14. 
C)  21. 
D)  24. 
E) 25. 
A)  11. 
B)  14. 
C)  21. 
D)  24. 
E) 25.

Question 12

Activity 4-5 in a network diagram has an optimistic time estimate of five days, a most likely time estimate of seven days, and a pessimistic time estimate of 10 days. Its expected time (in days) is approximately:

Accepted Answer

A)  5. 
B)  6. 
C)  7. 
D)  8. 
E) 9. 
A)  5. 
B)  6. 
C)  7. 
D)  8. 
E) 9.

Question 13

Which of the following is not characteristic of good risk management?

Accepted Answer

A)  estimating the likelihood of chance events occurring 
B)  planning to eliminate chance events 
C)  identifying potential chance events 
D)  formulating contingency plans for chance events 
E)  analyzing the consequences of chance events 
A)  estimating the likelihood of chance events occurring 
B)  planning to eliminate chance events 
C)  identifying potential chance events 
D)  formulating contingency plans for chance events 
E)  analyzing the consequences of chance events

Question 14

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

Accepted Answer

A)  13. 
B)  15. 
C)  20. 
D)  52. 
E) 81. 
A)  13. 
B)  15. 
C)  20. 
D)  52. 
E) 81.

Question 15

Which of the following is not true about the use of dummy activities in project networking?

Accepted Answer

A)  They preserve the separate identities of activities. 
B)  They clarify precedence relationships among activities. 
C)  They have an activity time equal to zero. 
D)  They have an activity time variance equal to zero. 
E)  They are used in activities-on-nodes (AON) network diagrams. 
A)  They preserve the separate identities of activities. 
B)  They clarify precedence relationships among activities. 
C)  They have an activity time equal to zero. 
D)  They have an activity time variance equal to zero. 
E)  They are used in activities-on-nodes (AON) network diagrams.

Question 16

A hierarchical (vertical) listing of what must be done during a project is called matrix.

Accepted Answer

A) True 
 B)False

Question 17

Consider the following work breakdown structure: $\begin{array}{r}
  \text { Duration Estimate (Days) }\quad \quad \quad \quad  \
\begin{array}{lccccc} 
& \text { Start } & \text { Finish } \
\text { Activity } & \text { Node } & \text { Node } & \text { Optimistic } & \text { Most Likely } & \text { Pessimistic } \
\hline \text { A } & 1 & 2 & 9 & 15 & 21 \
\text { B } & 1 & 3 & 13 & 21 & 23 \
\text { C } & 2 & 4 & 6 & 9 & 18 \
\text { D } & 2 & 5 & 23 & 35 & 47 \
\text { E } & 3 & 5 & 19 & 26 & 27 \
\text { F } & 4 & 6 & 23 & 29 & 41 \
\text { G } & 5 & 6 & 14 & 20 & 26 \
\text { H } & 6 & 7 & 2 & 5 & 8
\end{array}\end{array}$ What is the estimated expected (mean) time (in weeks) for project completion?

Accepted Answer

The answer of Consider the following work breakdown structure: \(\begin{array}{r}
...

Question 18

A method used for establishing a logical framework for identifying the required activities for the project is called:

Accepted Answer

A)  work breakdown structure. 
B)  PERT. 
C)  planning matrix. 
D)  crashing. 
E)  critical path analysis. 
A)  work breakdown structure. 
B)  PERT. 
C)  planning matrix. 
D)  crashing. 
E)  critical path analysis.

Question 19

The sum of times of the longest path in a network indicates expected project completion time, and the activities represent the critical activities.

Accepted Answer

A) True 
 B)False

Question 20

The latest starting time for an activity is equal to the latest finish time minus the activity time.

Accepted Answer

A) True 
 B)False

Exam 17: Project Management

A disadvantage of activity-on-node diagrams is the occasional need for dummy activities.

What is the probability that this project will take more than 10 weeks to complete if the activity means and standard deviations are as shown below? Activity Mean Std.Dev. 1-2 5 1 2-3 4 1 1-3 8 1

A PERT/CPM activity has an optimistic time estimate of three days, a most likely time estimate of eight days, and a pessimistic time estimate of 10 days. The expected time (in days) of this activity is:

Many activities have slack time; if we add these slack times together, this represents the potential improvement in early completion for the project.

Consider the following work breakdown structure: Duration Estimates (Days) Activity Precedes Optimistic Most Likely Pessimistic Start U, V - - - U W 35 50 65 V W, X 28 40 52 W Z 26 35 44 X Y 28 40 52 Y Z 26 29 38 Z End 36 60 84 What is the estimated slack time for activity W?

Consider the following work breakdown structure: Time Estimates (days) Activity Precedes Optimistic Most Likely Pessimistic Start A, B - - - A C, D 44 50 56 B D 45 60 75 C E 42 45 48 D F 31 40 49 E F 27 36 39 F End 58 70 82 What is the estimated standard deviation in the time for activity E?

Consider the following work breakdown structure: Time Estimates (days) Activity Precedes Optimistic Most Likely Pessimistic Start A, B - - - A C, D 44 50 56 B D 45 60 75 C E 42 45 48 D F 31 40 49 E F 27 36 39 F End 58 70 82 What is the estimated expected (mean) time for project completion?

The earliest finish time for an activity is equal to the latest finish time minus the activity slack.

Gantt charts are most closely associated with

Activity 7-8 is directly preceded by two activities-activity 5-7 and activity 6-7. Activity 5-7 has an expected time of five and an ES time of six. Activity 6-7 has an expected time of seven and an ES time of seven. Activity 7-8 has an expected time of 10. The ES for activity 7-8 is:

Activity 4-5 in a network diagram has an optimistic time estimate of five days, a most likely time estimate of seven days, and a pessimistic time estimate of 10 days. Its expected time (in days) is approximately:

Which of the following is not characteristic of good risk management?

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

Which of the following is not true about the use of dummy activities in project networking?

A hierarchical (vertical) listing of what must be done during a project is called matrix.

A method used for establishing a logical framework for identifying the required activities for the project is called:

The sum of times of the longest path in a network indicates expected project completion time, and the activities represent the critical activities.

The latest starting time for an activity is equal to the latest finish time minus the activity time.

Introduction to Operations Management

Competitiveness, Strategy, and Productivity

Forecasting

Product and Service Design

Extension: Reliability

Strategic Capacity Planning for Products and Services

Extension: Decision Theory

Process Selection and Facility Layout

Work Design and Measurement

Extension: Learning Curves

Location Planning and Analysis

Extension: The Transportation Model

Management of Quality

Quality Control

Extension: Acceptance Sampling

Aggregate Planning and Master Scheduling

MRP and ERP

Inventory Management

Jit and Lean Operations

Extension: Maintenance

Supply Chain Management

Scheduling

Management of Waiting Lines

Linear Programming

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