Question 1

Burst activities are those with two or more successor activities.

Accepted Answer

A) True 
 B)False

Question 2

-Use the network diagram and activity lengths in the nodes to determine the early start time for activity D.

Accepted Answer

A)  8 
B)  13 
C)  14 
D)  21

Question 3

Preceding activities are those that must occur before others can be done.

Accepted Answer

A) True 
 B)False

Question 4

The variance of an activity is given by:

Accepted Answer

A)  [1/6(b-a)]2. 
B)  1/6[b-a]. 
C)  [1/36(b-a)]2. 
D)  1/36[b-a].

Question 5

Serial activities are those that:

Accepted Answer

A)  Flow from one to the next in sequence. 
B)  Have sequential numbers. 
C)  Have the same numbers. 
D)  Should be performed simultaneously.

Question 6

-What is the earliest that Activity D can begin if Activity A takes 3 days,Activity B takes 5 days,and Activity C takes 7 days?

Accepted Answer

A)  Day 15 
B)  Day 7 
C)  Day 5 
D)  Day 3

Question 7

An activity has an optimistic time estimate of 17 days,a most likely estimate of 23 days,and a pessimistic estimate of 37 days.What is the variance of the activity?

Accepted Answer

A)  3.33 
B)  6.66 
C)  9.99 
D)  11.11

Question 8

-Use the network diagram and activity lengths in the nodes to determine the late start time for activity F.

Accepted Answer

A)  21 
B)  24 
C)  26 
D)  23

Question 9

Which technique would accelerate the completion of a project?

Accepted Answer

A)  Hammocking 
B)  Bursting 
C)  Laddering 
D)  Passing

Question 10

Use the information in the table to determine the slack time for Activity B.

Accepted Answer

A)  6 days 
B)  4 days 
C)  2 days 
D)  0 days

Question 11

Summaries for some subsets of the activities identified in the overall project network are called:

Accepted Answer

A)  Ladder activities. 
B)  Hammock activities. 
C)  Negative float activities. 
D)  Compressed activities.

Question 12

-Which of these statements about this network is BEST?

Accepted Answer

A)  Activities A and B are serial activities. 
B)  Activities B and C are serial activities. 
C)  Activities A and C are serial activities. 
D)  Activity D is a merge activity.

Question 13

An activity has an optimistic time estimate of 12 days,a most likely estimate of 16 days,and a pessimistic estimate of 22 days.What is the expected standard deviation of the activity?

Accepted Answer

A)  Between 1 and 2 days 
B)  Between 2 and 3 days 
C)  Between 3 and 4 days 
D)  Between 4 and 5 days

Question 14

What is the early finish time for Activity F given the activity times and precedence requirements shown in the table? $$\begin{array} { | l | l | l | } 
\hline \text { Activity } & \text { Time } & \text { Predecessor } \
\hline \text { A } & 5 & - \
\hline \text { B } & 7 & - \
\hline \text { D } & 8 & \text { A } \
\hline \text { D } & 7 & \text { A } \
\hline \text { E } & 4 & \text { B } \
\hline \text { F } & 8 & \text { C, D } \
\hline \text { G } & 9 & \text { E, F } \
\hline \text { H } & 7 & \text { G } \
\hline
\end{array}$$

Accepted Answer

A)  15 
B)  17 
C)  19 
D)  21

Question 15

A backward pass is performed when it is necessary to undo some work that has been performed in order to complete it properly.

Accepted Answer

A) True 
 B)False

Question 16

The PERT technique assumes that durations are more deterministic.

Accepted Answer

A) True 
 B)False

Question 17

-Use the network diagram and activity lengths in the nodes to determine the late finish time for activity C.

Accepted Answer

A)  12 
B)  13 
C)  14 
D)  15

Question 18

The overall effect of laddering activities is to:

Accepted Answer

A)  Streamline the linkage and sequencing between activities and keep project resources fully employed. 
B)  Summarize some subsets of the activities identified in the overall project network. 
C)  Allow the project team to disaggregate the overall project network into logical summaries. 
D)  Allow the project manager to more fully deploy resources and complete the project with zero slack.

Question 19

-Based on the activity network pictured,what is the BEST statement?

Accepted Answer

A)  Activity C is a burst activity. 
B)  Activity E has one predecessor, Activity B. 
C)  Activity A and Activity C are merge activities. 
D)  There are no serial activities in this network.

Question 20

A gentleman farmer maniacally works on academic projects to raise funds for his true passion,farming.He has identified seven tasks and developed three time estimates (all in days)of the next big project on the farm,replacing the fence at the comedy pasture.Tasks,precedence requirements,and time estimates are shown in the table.What is the late finish for the Plant Posts activity? $$\begin{array} { | l | l | l | l | l | } 
\hline \text { Activity } & \begin{array} { l } 
\text { Optimistic } \
\text { time }
\end{array} & \begin{array} { l } 
\text { Most Likely } \
\text { time }
\end{array} & \begin{array} { l } 
\text { Pessimistic } \
\text { time }
\end{array} & \text { Predecessor } \
\hline \text { Corner Posts } & 4 & 5 & 6 & - \
\hline \text { String Line } & 7 & 8 & 9 & - \
\hline \text { Dig Holes } & 10 & 12 & 14 & \text { Corner Posts } \
\hline \text { Plant Posts } & 11 & 14 & 17 & \text { String Line } \
\hline \text { Weld Top Bar } & 8 & 11 & 14 & \text { String Line } \
\hline \text { Paint } & 9 & & 11 & \begin{array} { l } 
\text { Dig Holes, Plant } \
\text { Posts }
\end{array} \
\hline \text { Tack Wire } & 9 & 12 & 16 & \text { Weld Top Bar } \
\hline
\end{array}$$

Accepted Answer

A)  13.3 days 
B)  8 days 
C)  20.83 days 
D)  22 days

Exam 9: Project Scheduling: Networks,Duration Estimation,and Critical Path

Burst activities are those with two or more successor activities.

-Use the network diagram and activity lengths in the nodes to determine the early start time for activity D.

Preceding activities are those that must occur before others can be done.

The variance of an activity is given by:

Serial activities are those that:

-What is the earliest that Activity D can begin if Activity A takes 3 days,Activity B takes 5 days,and Activity C takes 7 days?

An activity has an optimistic time estimate of 17 days,a most likely estimate of 23 days,and a pessimistic estimate of 37 days.What is the variance of the activity?

-Use the network diagram and activity lengths in the nodes to determine the late start time for activity F.

Which technique would accelerate the completion of a project?

Use the information in the table to determine the slack time for Activity B.

Summaries for some subsets of the activities identified in the overall project network are called:

-Which of these statements about this network is BEST?

An activity has an optimistic time estimate of 12 days,a most likely estimate of 16 days,and a pessimistic estimate of 22 days.What is the expected standard deviation of the activity?

A backward pass is performed when it is necessary to undo some work that has been performed in order to complete it properly.

The PERT technique assumes that durations are more deterministic.

-Use the network diagram and activity lengths in the nodes to determine the late finish time for activity C.

The overall effect of laddering activities is to:

-Based on the activity network pictured,what is the BEST statement?