Question 1

Describe in words how to calculate a project's standard deviation.What assumption allows that calculation to be accurate?

Accepted Answer

Add the variances of the activ

Question 2

Identify several advantages of using PERT (and CPM).

Accepted Answer

The advantages include (1)its usefulness

Question 3

The ________ distribution is appropriate for calculating expected activity times and activity variances in PERT networks.

Accepted Answer

The answer of The ________ distribution is appropriate for calculating...

Question 4

What are the three phases of a project? Describe each in a sentence or two.

Accepted Answer

The three phases are planning,scheduling

Question 5

A project whose critical path has an estimated time of 120 days with a variance of 100 has a 20% chance that the project will be completed before which day (rounded to nearest day)?

Accepted Answer

A) 98 
B) 112 
C) 120 
D) 124 
E) 220 
A) 98 
B) 112 
C) 120 
D) 124 
E) 220

Question 6

Which of the following statements regarding time-cost tradeoffs in CPM networks is false?

Accepted Answer

A) Crashing shortens project duration by assigning more resources to critical tasks. 
B) Crashing sometimes has the reverse result of lengthening the project duration. 
C) Crashing must consider the impact of crashing an activity on all paths in the network. 
D) Activities not on the critical path can become critical after crashing takes place. 
E) A negative crash cost per period would imply that either crashing is cheaper than not crashing or that the crash time was slower than the normal time. 
A) Crashing shortens project duration by assigning more resources to critical tasks. 
B) Crashing sometimes has the reverse result of lengthening the project duration. 
C) Crashing must consider the impact of crashing an activity on all paths in the network. 
D) Activities not on the critical path can become critical after crashing takes place. 
E) A negative crash cost per period would imply that either crashing is cheaper than not crashing or that the crash time was slower than the normal time.

Question 7

Describe the differences between a Gantt chart and a PERT/CPM network.

Accepted Answer

The differences between a Gant

Question 8

In project management,crashing an activity must consider the impact on all paths in the network.

Accepted Answer

A) True 
 B)False

Question 9

What is the basic difference between PERT and CPM?

Accepted Answer

The basic difference between P

Question 10

Pirmin's Bike Shop is behind on a custom bike and needs to crash 8 hours of time from the 8-step project.Given the project table below calculate the crash cost for 8 hours of time-savings.Suppose Pirmin calls the customer and asks for a project extension,reducing the amount of time he needs to crash.Calculate both the maximum time-savings available on a $25 crash budget and the cost to crash four hours of savings.

Accepted Answer

@#IMG-DLM& The critical path is ABCEFGH with a tim

Question 11

A simple CPM network has three activities,A,B,and C.A is an immediate predecessor of B and of C.B is an immediate predecessor of C.The activity durations are A=4,B=3,C=8.

Accepted Answer

A) The critical path is A-B-C,duration 15. 
B) The critical path is A-C,duration 12. 
C) The critical path is A-B-C,duration 13.5 
D) The critical path cannot be determined without knowing PERT expected activity times. 
E) The network has no critical path. 
A) The critical path is A-B-C,duration 15. 
B) The critical path is A-C,duration 12. 
C) The critical path is A-B-C,duration 13.5 
D) The critical path cannot be determined without knowing PERT expected activity times. 
E) The network has no critical path.

Question 12

A code of ethics especially for project managers:

Accepted Answer

A) has been established by the Project Management Institute. 
B) has been formulated by the Federal government. 
C) has been formulated by the World Trade Organization. 
D) is inappropriate,since everyone should use the same guidance on ethical issues. 
E) does not exist at this time. 
A) has been established by the Project Management Institute. 
B) has been formulated by the Federal government. 
C) has been formulated by the World Trade Organization. 
D) is inappropriate,since everyone should use the same guidance on ethical issues. 
E) does not exist at this time.

Question 13

The fundamental difference between PERT and CPM is that PERT uses the beta distribution for crashing projects while CPM uses cost estimates.

Accepted Answer

A) True 
 B)False

Question 14

Ethical issues that can arise in projects include gifts from contractors,pressure to mask delays with false status reports,and pressure to compromise project quality to meet bonuses or avoid penalties related to schedules.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following statements regarding critical paths is true?

Accepted Answer

A) The shortest of all paths through the network is the critical path. 
B) Some activities on the critical path may have slack. 
C) Every network has only one critical path. 
D) On a specific project,there can be multiple critical paths,all with exactly the same duration. 
E) The duration of the critical path is the average duration of all paths in the project network. 
A) The shortest of all paths through the network is the critical path. 
B) Some activities on the critical path may have slack. 
C) Every network has only one critical path. 
D) On a specific project,there can be multiple critical paths,all with exactly the same duration. 
E) The duration of the critical path is the average duration of all paths in the project network.

Question 16

Shortening the project's duration by deleting unnecessary activities is called "project crashing."

Accepted Answer

A) True 
 B)False

Question 17

The beta distribution is used in project management to:

Accepted Answer

A) determine which activity should be crashed. 
B) calculate the probability that a project will be completed within its budget. 
C) calculate expected activity times. 
D) calculate slack for activities on the critical path. 
E) none of the above 
A) determine which activity should be crashed. 
B) calculate the probability that a project will be completed within its budget. 
C) calculate expected activity times. 
D) calculate slack for activities on the critical path. 
E) none of the above

Question 18

Contract requirements state that a project must be completed within 180 working days,or it will incur penalties for late completion.Analysis of the activity network reveals an estimated project time of 145 working days with a project variance of 400.What is the probability that the project will be completed before the late-payment deadline?

Accepted Answer

A) 0.0401 
B) 0.4599 
C) 0.8056 
D) 0.9599 
E) near 1.0000,or almost certain 
A) 0.0401 
B) 0.4599 
C) 0.8056 
D) 0.9599 
E) near 1.0000,or almost certain

Question 19

The network analysis method that allows activity times to vary is ________.

Accepted Answer

PERT or Pr

Question 20

A network consists of the following list.Times are given in weeks.
   a.Draw the network diagram.
b.Which activities form the critical path?
c.How much slack exists at activities A and F?
d.What is the duration of the critical path?

Accepted Answer

(a)Network diagram @#IMG-DLM& (b)paths A

Exam 3: Project Management

Describe in words how to calculate a project's standard deviation.What assumption allows that calculation to be accurate?

Identify several advantages of using PERT (and CPM).

The ________ distribution is appropriate for calculating expected activity times and activity variances in PERT networks.

What are the three phases of a project? Describe each in a sentence or two.

A project whose critical path has an estimated time of 120 days with a variance of 100 has a 20% chance that the project will be completed before which day (rounded to nearest day)?

Which of the following statements regarding time-cost tradeoffs in CPM networks is false?

Describe the differences between a Gantt chart and a PERT/CPM network.

In project management,crashing an activity must consider the impact on all paths in the network.

What is the basic difference between PERT and CPM?

A simple CPM network has three activities,A,B,and C.A is an immediate predecessor of B and of C.B is an immediate predecessor of C.The activity durations are A=4,B=3,C=8.

A code of ethics especially for project managers:

The fundamental difference between PERT and CPM is that PERT uses the beta distribution for crashing projects while CPM uses cost estimates.

Ethical issues that can arise in projects include gifts from contractors,pressure to mask delays with false status reports,and pressure to compromise project quality to meet bonuses or avoid penalties related to schedules.

Which of the following statements regarding critical paths is true?

Shortening the project's duration by deleting unnecessary activities is called "project crashing."

The beta distribution is used in project management to:

The network analysis method that allows activity times to vary is ________.

A network consists of the following list.Times are given in weeks. a.Draw the network diagram. b.Which activities form the critical path? c.How much slack exists at activities A and F? d.What is the duration of the critical path?

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