Question 1

A Gantt chart of a project shows the scheduled start and finish times for activities.

Accepted Answer

A) True 
 B)False

Question 2

Figure  (time in days) 
-What is the estimated mean time for project completion?

Accepted Answer

A)  135 days.
B)  145 days.
C)  170 days.
D)  180 days.
E)  255 days.F) All of the above
G) A) and E)

Question 3

Figure  (time in days) 
-What is the estimated mean time for activity E?

Accepted Answer

A)  35 days.
B)  36 days.
C)  39 days.
D)  40 days.
E)  45 days.F) None of the above
G) All of the above

Question 4

Although PERT and CPM were originally developed for somewhat different types of projects,they are now nearly identical in terms of analysis and procedures.

Accepted Answer

A) True 
 B)False

Question 5

The length of the critical path is determined by adding the expected completion times for all the activities in the project.

Accepted Answer

A) True 
 B)False

Question 6

The values assigned to the nodes in a project network are there to identify the precedence relationships.

Accepted Answer

A) True 
 B)False

Question 7

A normal distribution is usually used to describe the form of the probability distribution of activity durations in the PERT three-estimate approach.

Accepted Answer

A) True 
 B)False

Question 8

Figure 
-The duration of the critical path is:

Accepted Answer

A)  11 days.
B)  20 days.
C)  18 days.
D)  22 days.
E)  15 days.F) C) and E)
G) C) and D)

Question 9

A forward pass is the process of moving forward through the project network to determine the latest start times and latest finish times of each activity.

Accepted Answer

A) True 
 B)False

Question 10

In PERT,the path with the fewest activities is referred to as the critical path.

Accepted Answer

A) True 
 B)False

Question 11

If two paths are tied for the longest duration,both would be considered to be critical paths.

Accepted Answer

A) True 
 B)False

Question 12

There are four activities on the critical path,and they have standard deviations of 1,2,4,and 2 days.The standard deviation of the critical path is:

Accepted Answer

A)  3 days.
B)  5 days.
C)  9 days.
D)  16 days.
E)  25 days.F) A) and B)
G) A) and C)

Question 13

A manager has decided that an activity has a pessimistic estimate of 15 days,a most-likely estimate of 6 days,and an optimistic estimate of 3 days.The expected duration of this activity is 6 days.

Accepted Answer

A) True 
 B)False

Question 14

Figure  (time in days) 
-What is the probability that this project will be completed within 205 days?

Accepted Answer

A)  0.6826.
B)  0.8413.
C)  0.9544.
D)  0.9772.
E)  0.9987.F) B) and C)
G) A) and E)

Question 15

In project network analysis,slack refers to the difference between:

Accepted Answer

A)  observed and predicted times.
B)  optimistic and pessimistic times.
C)  latest finish and latest start times.
D)  earliest finish and earliest start times.
E)  latest start and earliest start times.F) A) and C)
G) All of the above

Question 16

A common assumption when using PERT/Cost is that the costs are incurred at a constant rate throughout the duration of an activity.

Accepted Answer

A) True 
 B)False

Question 17

Concerning PERT and CPM:

Accepted Answer

A)  These are two different names for essentially the same technique.
B)  CPM tends to focus more on the critical path.
C)  PERT gives a better indication of activity slack,CPM a better picture of path slack.
D)  Because of its recent discovery,much less is known about CPM that PERT.
E)  All of the above are true.F) C) and D)
G) A) and D)

Question 18

Projects involve routine activities that are performed repeatedly.

Accepted Answer

A) True 
 B)False

Question 19

When calculating the probability that a project will finish by a certain time,the approximation that is obtained is usually lower than the true probability.

Accepted Answer

A) True 
 B)False

Question 20

The latest finish of an activity is the earliest late start of any immediately preceding activity.

Accepted Answer

A) True 
 B)False

Exam 19: CD - Pertcpm Models for Project Management

Projects involve routine activities that are performed repeatedly.

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In PERT,the path with the fewest activities is referred to as the critical path.

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Concerning PERT and CPM:

Correct AnswerverifiedShow Answer

A common assumption when using PERT/Cost is that the costs are incurred at a constant rate throughout the duration of an activity.

Correct AnswerverifiedShow Answer

A normal distribution is usually used to describe the form of the probability distribution of activity durations in the PERT three-estimate approach.

Correct AnswerverifiedShow Answer

A forward pass is the process of moving forward through the project network to determine the latest start times and latest finish times of each activity.

Correct AnswerverifiedShow Answer

When calculating the probability that a project will finish by a certain time,the approximation that is obtained is usually lower than the true probability.

Correct AnswerverifiedShow Answer

In project network analysis,slack refers to the difference between:

Correct AnswerverifiedShow Answer

Although PERT and CPM were originally developed for somewhat different types of projects,they are now nearly identical in terms of analysis and procedures.

Correct AnswerverifiedShow Answer

If two paths are tied for the longest duration,both would be considered to be critical paths.

Correct AnswerverifiedShow Answer

Figure (time in days) -What is the estimated mean time for project completion?

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The latest finish of an activity is the earliest late start of any immediately preceding activity.

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The length of the critical path is determined by adding the expected completion times for all the activities in the project.

Correct AnswerverifiedShow Answer

A Gantt chart of a project shows the scheduled start and finish times for activities.

Correct AnswerverifiedShow Answer

The values assigned to the nodes in a project network are there to identify the precedence relationships.

Correct AnswerverifiedShow Answer

Figure (time in days) -What is the probability that this project will be completed within 205 days?

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There are four activities on the critical path,and they have standard deviations of 1,2,4,and 2 days.The standard deviation of the critical path is:

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Figure (time in days) -What is the estimated mean time for activity E?

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A manager has decided that an activity has a pessimistic estimate of 15 days,a most-likely estimate of 6 days,and an optimistic estimate of 3 days.The expected duration of this activity is 6 days.

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Figure -The duration of the critical path is:

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