Question 1

Activity D on a CPM network has predecessors B and C,and has successor F.D has duration 6.B's earliest finish is 18,while C's is 20.F's late start is 26.Which of the following is definitely true?

Accepted Answer

A)  B is a critical activity.
B)  C is completed before B.
C)  D has no slack but is not critical.
D)  D is critical and has zero slack.
E)  F is critical and has zero slack.

Question 2

In PERT analysis,the identification of the critical path can be incorrect if a noncritical activity takes substantially more than its expected time.

Accepted Answer

A) True 
 B)False

Question 3

The ES of an activity that has only one predecessor is simply the EF of that predecessor.

Accepted Answer

A) True 
 B)False

Question 4

The shortest of all paths through the network is the critical path.

Accepted Answer

A) True 
 B)False

Question 5

A simple CPM network has five activities,A,B,C,D,and E.A is an immediate predecessor of C and of D.B is also an immediate predecessor of C and of D.C and D are both immediate predecessors of E.

Accepted Answer

A)  There are two paths in this network.
B)  There are four paths in this network.
C)  There are five paths in this network.
D)  There are 25 paths through this network.
E)  There is no critical path in this network.

Question 6

The main difference between PERT and CPM is that

Accepted Answer

A)  PERT is more accurate than CPM.
B)  PERT assumes that activity durations are known.
C)  PERT ignores activity costs.
D)  CPM assumes that activity durations can vary.
E)  they differ in terminology and in the construction of the network.

Question 7

An activity on a PERT network has these time estimates: optimistic = 2,most likely = 5,and pessimistic = 10.Its expected time is

Accepted Answer

A)  5.00.
B)  5.33.
C)  5.67.
D)  17.00.
E)  0.533.

Question 8

Which of the following statements regarding PERT analysis is true?

Accepted Answer

A)  Each activity has two estimates of its duration.
B)  Project variance is the sum of all activity variances.
C)  Project standard deviation is the sum of all critical activity standard deviations.
D)  Only critical activities contribute to the project variance.
E)  Only non-critical activities contribute to the project variance.

Question 9

________ is an organization formed to ensure that programs (projects)receive the proper management and attention.

Accepted Answer

Project or...

Question 10

Activity R on a CPM network has predecessors M and N,and has successor S.R has duration 5.N's late finish is 18,while M's is 20.S's late start is 14.Which of the following is definitely true?

Accepted Answer

A)  R is critical and has zero slack.
B)  R has no slack but is not critical.
C)  The set of given times cannot all be possible.
D)  N is a critical activity.
E)  S is a critical activity.

Question 11

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 day (rounded to nearest day)

Accepted Answer

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

Question 12

A project organization

Accepted Answer

A)  is effective for companies with multiple large projects.
B)  is appropriate only in construction firms.
C)  often fails when the project cuts across organizational lines.
D)  is only appropriate for technical projects.
E)  is especially useful for small project.

Question 13

The PERT pessimistic time estimate is an estimate of the minimum time an activity will require.

Accepted Answer

A) True 
 B)False

Question 14

The standard deviation of project duration is the average of the standard deviation of all activities on the critical path.

Accepted Answer

A) True 
 B)False

Question 15

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

Accepted Answer

The differences between a Gant...

Question 16

Match the following steps in Microsoft's development of Windows 7 to their respective WBS level. Step Level
Develop Windows 7 OS ?
System Testing ?
Compatible with Windows XP ?
Develop GUI's ?
Module Testing ?

Accepted Answer

A)  Level 1,Level 2,Level 4,Level 3,Level 3
B)  Level 1,Level 2,Level 3,Level 4,Level 5
C)  Level 0,Level 1,Level 2,Level 3,Level 4
D)  Level 0,Level 2,Level 2,Level 3,Level 3
E)  Level 0,Level 1,Level 1,Level 2,Level 3

Question 17

If an activity whose normal duration is 13 days can be shortened to 10 days for an added cost of $1,500,the crash cost per period is

Accepted Answer

A)  $500.
B)  $1,500.
C)  $750.
D)  $13,000.
E)  $15,000.

Question 18

A project manager is interested in crashing a project with variable activity times.Which of the following tools should he/she employ?

Accepted Answer

A)  PERT
B)  CPM
C)  Gantt Chart
D)  either PERT or CPM
E)  PERT,CPM,or a Gantt chart are fine

Question 19

Which of the following statements regarding Gantt charts is true?

Accepted Answer

A)  Gantt charts give a timeline and precedence relationships for each activity of a project.
B)  Gantt charts use the four standard spines of Methods,Materials,Manpower,and Machinery.
C)  Gantt charts are visual devices that show the duration of activities in a project.
D)  Gantt charts are expensive.
E)  Gantt charts identify the critical path.

Question 20

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

Accepted Answer

PERT or Pr...

Exam 3: Project Management

A project organization

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

Correct AnswerverifiedThe differences between a Gant...View AnswerShow Answer

The shortest of all paths through the network is the critical path.

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Match the following steps in Microsoft's development of Windows 7 to their respective WBS level. Step Level Develop Windows 7 OS ? System Testing ? Compatible with Windows XP ? Develop GUI's ? Module Testing ?

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The main difference between PERT and CPM is that

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If an activity whose normal duration is 13 days can be shortened to 10 days for an added cost of $1,500,the crash cost per period is

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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 day (rounded to nearest day)

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The PERT pessimistic time estimate is an estimate of the minimum time an activity will require.

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Which of the following statements regarding Gantt charts is true?

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A project manager is interested in crashing a project with variable activity times.Which of the following tools should he/she employ?

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The ES of an activity that has only one predecessor is simply the EF of that predecessor.

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An activity on a PERT network has these time estimates: optimistic = 2,most likely = 5,and pessimistic = 10.Its expected time is

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Activity D on a CPM network has predecessors B and C,and has successor F.D has duration 6.B's earliest finish is 18,while C's is 20.F's late start is 26.Which of the following is definitely true?

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In PERT analysis,the identification of the critical path can be incorrect if a noncritical activity takes substantially more than its expected time.

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________ is an organization formed to ensure that programs (projects)receive the proper management and attention.

Correct AnswerverifiedProject or...View AnswerShow Answer

Which of the following statements regarding PERT analysis is true?

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A simple CPM network has five activities,A,B,C,D,and E.A is an immediate predecessor of C and of D.B is also an immediate predecessor of C and of D.C and D are both immediate predecessors of E.

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

Correct AnswerverifiedPERT or Pr...View AnswerShow Answer

Activity R on a CPM network has predecessors M and N,and has successor S.R has duration 5.N's late finish is 18,while M's is 20.S's late start is 14.Which of the following is definitely true?

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The standard deviation of project duration is the average of the standard deviation of all activities on the critical path.

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The differences between a Gant...
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Project or...
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PERT or Pr...
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