MBA 624 PERT/CPM activity has an optimistic time estimate

1.

Consider the following project.

Compute the slack time for activity C.
0
4
2
3
1 points

QUESTION 2

1.

A PERT/CPM activity has an optimistic time estimate of 3 days, a most
likely time estimate of 8 days, and a pessimistic time estimate of 10 days.
The expected time (in days) of this activity is:
7.
0
7.
5
8.
0
8.
5
1 points

1.

QUESTION 3

A PERT/CPM activity has an optimistic time estimate of 3 days, a most
likely time estimate of 8 days, and a pessimistic time estimate of 10 days.
The standard deviation of this activity is:
7/
9
7/
6
1/
3
2/
3
1 points

QUESTION 4

1.

A dummy activity in a PERT network allows us to
specify the positive time and resources required to

complete the activity.
maintain the precedence relationships.
add more starting nodes.
add more ending nodes.
1 points

1.

QUESTION 5

A dummy activity is used to show a precedence relationship, but it
does not represent a
relationship between
activities.
change in relationship.
real activity.
passage of time.
1 points

QUESTION 6

1.

A list of the tasks, broken down into modules, components, and
individual tasks, is called a
work breakdown structure
(WBS).
PERT.
planning matrix.
critical path.
1 points

1.

QUESTION 7

Consider the following project.

What is the critical path?
ACFG
ADFG

BEG
ACDF
G
1 points

1.

QUESTION 8

Consider the following project.

What is the latest finish time for activity F?
9
7
1
3
1
6
1 points

QUESTION 9

1.

Consider the following project.

What is the latest possible time that Activity E can be started without
delaying the completion of the project?
8

3
7
9
1 points

1.

QUESTION 10

Consider the following project.

What is the latest time that activity B can finish without delaying any other
activities?
0
8
9
4
1 points

QUESTION 11

1.

Consider the following project.

What is the latest time that activity B can start without delaying the project?
0
8

4
7
1 points

1.

QUESTION 12

Consider the following project.

What is the minimum possible time for completing this project?
15
days
16
days
18
days
20
days
1 points

QUESTION 13

1.

Consider the following project.

Determine the critical path.
ACEH

BCEH
BDFH
BDG
H
1 points

1.

QUESTION 14

Consider the following project.

Determine the estimated completion time of the project.
23
days
22
days
25
days
20
days
1 points

QUESTION 15

1.

Consider the following project.

Determine the slack for activity D.
2
days
4
days
6
days
5
days
1 points

1.

QUESTION 16

Consider the following project.

Determine the slack for activity F.
2
days
3
days
4
days
5
days
1 points

QUESTION 17

1.

Consider the following project.

How much can activity F be delayed without delaying the project
completion?
1
day
2
days
3
days
4
days
1 points

1.

QUESTION 18

If an activity cannot be delayed without affecting the entire project,
then it is a ________ activity.
complet
ed
critical
crashed
normal
1 points

QUESTION 19

1.

If t is the expected completion time for a given activity, then:
LF = LS t
EF = ES t
EF = ES
+t
EF = LS t

1 points

1.

QUESTION 20
The diagram below shows the activities on the nodes, and the table shows the normal
time and crash time (in days) and cost for each activity.

Activity
A
B
C
D
E
F

4.

2.
3.

Normal Time Crash Time
6
10
5
4
9
2

6
8
4
1
7
1

Cost per day
to crash
--$100
$300
$700
$500
$650

Determine which activities should be crashed to shorten the project by 1 day.
B
C
D
E
1 points

1.

QUESTION 21
The diagram below shows the activities on the nodes, and the table shows the normal
time and crash time (in days) and cost for each activity.

Activity

Normal Time Crash Time

A
B
C
D
E
F
2.
3.

6
10
5
4
9
2

6
8
4
1
7
1

Cost per day
to crash
--$100
$300
$700
$500
$650

Determine which activities should be crashed to shorten the project by 2 days.

4.
Crash activity B by 1 day and Activity C
by 1 day.
Crash activity E by 2 days.
Crash activity C by 1 day and activity E
by 1 day.
Crash activity B by 2 days.
1 points

1.

QUESTION 22

The normal cost for an activity is $7,000 and the crash cost is $12,000.
The normal time to complete this activity is 8 days and crash time is 4 days.
If this activity is crashed by 2 days it will cost an additional:
$10
00
$12
50
$20
00
$25
00

1 points

QUESTION 23

1.

Which of these statements regarding project crashing is true?
Crashing is not possible unless there are multiple critical paths.
Activities not on the critical path cannot become critical after crashing.
Crashing shortens the project duration by assigning more resources to
one or more of the critical tasks.
Crashing a project often reduces the time it takes for lengthy or complex,
but noncritical activities.
1 points

1.

QUESTION 24

In a CPM/PERT network the critical path is the

lowest path through the
network.
highest path through the
network.
shortest path through the
network.
longest path through the
network.
1 points

QUESTION 25

1.

Joe used a project management software package and has determined
the following results for a given project.:
What is the probability of completing the project over 20 days?
0.38
49
0.88
49
0.11
51
0.76
42
1 points

1.

QUESTION 26

Joe used a project management software package and has determined
the following results for a given project:
What is the probability of completing the project within 20 days?

0.38
49
0.88
49
0.11
51
0.76
42
1 points

1.

QUESTION 27

On an AOA diagram, a ________ represents the beginning and end of
activities, referred to as events.
path
arc
bran
ch
node
1 points

QUESTION 28

1.

The LS and LF are calculated using the
backward pass through the network.
forward pass through the network.
values for ES and EF.
backward and forward pass through
the network.
1 points

1.

QUESTION 29

Once a project is underway, the project manager is responsible for the

people.
cost.
time.
All of
these
1 points

QUESTION 30

1.

The activities that must be completed prior to the start of an activity in
question are called the immediate ________ of the activity in question.
successors

predecessors
successors and
predecessors
followers