Question 1

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 probability that the project is completed in 31 days? $$\begin{array} { | l | l | l | l | l | } 
\hline \text { Activity } & \begin{array} { l } 
\text { Optimistic } \
\text { time }
\end{array} & \begin{array} { l } 
\text { Most Likely } \
\text { time }
\end{array} & \begin{array} { l } 
\text { Pessimistic } \
\text { time }
\end{array} & \text { Predecessor } \
\hline \text { Corner Posts } & 4 & 5 & 6 & - \
\hline \text { String Line } & 7 & 8 & 9 & - \
\hline \text { Dig Holes } & 10 & 12 & 14 & \text { Corner Posts } \
\hline \text { Plant Posts } & 11 & 14 & 17 & \text { String Line } \
\hline \text { Weld Top Bar } & 8 & 11 & 14 & \text { String Line } \
\hline \text { Paint } & 9 & & & \text { Dig Holes, Plant } \
\hline \text { Tack Wire } & 9 & 12 & 16 & \text { Posts } \
\hline
\end{array}$$

Accepted Answer

A)  0.055 
B)  0.092 
C)  0.125 
D)  0.187

Question 2

Hammock activities break a task into greater levels of detail so that each task is represented as two or more subtasks that each have their own duration and precedence requirements.

Accepted Answer

A) True 
 B)False

Question 3

What is the late start time for Activity B given the activity times and precedence requirements shown in the table? $$\begin{array} { | l | l | l | } 
\hline \text { Activity } & \text { Time } & \text { Predecessor } \
\hline \mathrm { A } & 5 & - \
\hline \mathrm { B } & 6 & \mathrm {~A} \
\hline \mathrm { C } & 4 & \mathrm {~A} \
\hline \mathrm { D } & 5 & \mathrm {~B} , \mathrm { C } \
\hline
\end{array}$$

Accepted Answer

A)  11 
B)  9 
C)  7 
D)  5

Question 4

The BEST candidate activities for shortening the overall project are:

Accepted Answer

A)  The shortest tasks. 
B)  The longest tasks. 
C)  The merge tasks. 
D)  The burst tasks.

Question 5

Use the information in the table to sketch the network and compute early and late start times.
 $$\begin{array} { | l | l | l | } 
\hline \text { Activity } & \text { Time } & \text { Predecessor } \
\hline \text { A } & 8 & \
\hline \text { B } & 4 & \text { A } \
\hline \text { C } & 5 & \text { B, F } \
\hline \text { D } & 12 & \text { A } \
\hline E & 8 & \text { D } \
\hline \text { F } & 4 & \text { D } \
\hline G & 9 & \text { E, F } \
\hline
\end{array}$$

Accepted Answer

The answer of Use the information in the table to...

Question 6

The length of time expected to complete an activity assuming that its development proceeds normally is called the:

Accepted Answer

A)  Optimistic duration. 
B)  Pessimistic duration. 
C)  Most likely duration. 
D)  Normal duration.

Question 7

What are three methods of duration estimation for project activities and what are the advantages and disadvantages of each method?

Accepted Answer

The answer of What are three methods of duration estimation...

Question 8

Use the values in the table to calculate activity durations and variances for the project.What is the project deadline such that there is a 75% chance it is completed on time?

Accepted Answer

The answer of Use the values in the table to...

Question 9

In general,the better candidates for shortening are:

Accepted Answer

A)  Early tasks opposed to later tasks. 
B)  Later tasks opposed to early tasks. 
C)  Merge tasks opposed to burst tasks. 
D)  Burst tasks opposed to merge tasks.

Question 10

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 probability that the project takes more than 34 days? $$\begin{array} { | l | l | l | l | l | } 
\hline \text { Activity } & \begin{array} { l } 
\text { Optimistic } \
\text { time }
\end{array} & \begin{array} { l } 
\text { Most Likely } \
\text { time }
\end{array} & \begin{array} { l } 
\text { Pessimistic } \
\text { time }
\end{array} & \text { Predecessor } \
\hline \text { Corner Posts } & 4 & 5 & 6 & - \
\hline \text { String Line } & 7 & 8 & 9 & - \
\hline \text { Dig Holes } & 10 & 12 & 14 & \text { Corner Posts } \
\hline \text { Plant Posts } & 11 & 14 & 17 & \text { String Line } \
\hline \text { Weld Top Bar } & 8 & 11 & 14 & \text { String Line } \
\hline \text { Paint } & 9 & 11 & 13 & \text { Dig Holes, Plant } \
\hline \text { Tack Wire } & 9 & 12 & 16 & \text { Wosts } \
\hline
\end{array}$$

Accepted Answer

A)  0.788 
B)  0.212 
C)  0.945 
D)  0.055

Question 11

Laddering is a technique that allows the project manager to redraw the network to more closely sequence project subtasks to make the overall network sequence more efficient.

Accepted Answer

A) True 
 B)False

Question 12

A project has the precedence requirements and activity durations shown in the table.After he draws the network,the project manager decides that activities B,C,and D can be represented by a hammock activity.What are the early start and late finish times associated with this hammock activity? $$\begin{array} { | l | l | l | } 
\hline & \text { Time } & \text { Predecessor } \
\hline \mathrm { A } & 7 & \
\hline \mathrm { B } & 8 & \mathrm {~A} \
\hline \mathrm { C } & 13 & \mathrm {~B} \
\hline \mathrm { D } & 8 & \mathrm { C } \
\hline \mathrm { E } & 7 & \mathrm {~A} \
\hline \mathrm { F } & 6 & \mathrm { E } \
\hline \mathrm { G } & 6 & \mathrm {~A} \
\hline \mathrm { H } & 11 & \mathrm { G } \
\hline \mathrm { I } & 12 & \mathrm { H } \
\hline \mathrm { T } & 14 & \mathrm { D } , \mathrm { F } , \mathrm { I } \
\hline
\end{array}$$

Accepted Answer

A)  11, 30 
B)  7, 24 
C)  11, 24 
D)  7, 36

Question 13

Float is always measured in exactly the same way as slack.

Accepted Answer

A) True 
 B)False

Question 14

What is the background of CPM and PERT? What are the differences between the two techniques?

Accepted Answer

The answer of What is the background of CPM and...

Question 15

-Activities C,D,and E in the project represented by the network are to be hammocked.What is the activity length of the hammock activity?

Accepted Answer

A)  20 
B)  16 
C)  13 
D)  11

Question 16

What is the early start time for Activity D given the activity times and precedence requirements shown in the table? $$\begin{array} { | l | l | l | } 
\hline \text { Activity } & \text { Time } & \text { Predecessor } \
\hline A & 5 & - \
\hline \text { B } & 6 & A \
\hline \text { C } & 4 & A \
\hline D & 5 & \text { B, C } \
\hline
\end{array}$$

Accepted Answer

A)  7 
B)  9 
C)  11 
D)  13

Question 17

An activity has an optimistic time estimate of 17 days,a most likely estimate of 22 days,and a pessimistic estimate of 32 days.What is the expected duration of the activity?

Accepted Answer

A)  22.83 days 
B)  23.67 days 
C)  24.33 days 
D)  25.17 days

Question 18

An activity has a pessimistic time that is four times as long as its most likely time and six times as long as its optimistic time.If the activity variance is 12,what is the expected time?

Accepted Answer

A)  About 8 days 
B)  About 9 days 
C)  About 10 days 
D)  About 11 days

Question 19

-Network logic suggests that:

Accepted Answer

A)  Activity D can start any time. 
B)  Activity A must be complete before Activity B can be done. 
C)  Activities A, B and C must be complete before Activity D can be done. 
D)  Activity C must begin before Activity B begins.

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 expected completion time of the project? $$\begin{array} { | l | l | l | l | l | } 
\hline \text { Activity } & \begin{array} { l } 
\text { Optimistic }
\end{array} & \begin{array} { l } 
\text { Most Likely }
\end{array} & \begin{array} { l } 
\text { Pessimistic }
\end{array} & \
\hline \text { time } & \text { time } & \text { time } & \text { Predecessor } \
\hline \text { Sorner Posts } & 4 & 5 & 6 & - \
\hline \text { Dig Holes } & 10 & 12 & 14 & \text { Corner Posts } \
\hline \text { Plant Posts } & 11 & 14 & 17 & \text { String Line } \
\hline \text { Weld Top Bar } & 8 & 11 & 14 & \text { String Line } \
\hline & & & & \text { Dig Holes, Plant } \
\hline \text { Paint } & 9 & 11 & 13 & \text { Posts } \
\hline \text { Tack Wire } & 9 & 12 & 16 & \text { Weld Top Bar } \
\hline
\end{array}$$

Accepted Answer

A)  32 days 
B)  33 days 
C)  34 days 
D)  35 days

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

Hammock activities break a task into greater levels of detail so that each task is represented as two or more subtasks that each have their own duration and precedence requirements.

The BEST candidate activities for shortening the overall project are:

The length of time expected to complete an activity assuming that its development proceeds normally is called the:

What are three methods of duration estimation for project activities and what are the advantages and disadvantages of each method?

Use the values in the table to calculate activity durations and variances for the project.What is the project deadline such that there is a 75% chance it is completed on time?

In general,the better candidates for shortening are:

Laddering is a technique that allows the project manager to redraw the network to more closely sequence project subtasks to make the overall network sequence more efficient.

Float is always measured in exactly the same way as slack.

What is the background of CPM and PERT? What are the differences between the two techniques?

-Activities C,D,and E in the project represented by the network are to be hammocked.What is the activity length of the hammock activity?

An activity has an optimistic time estimate of 17 days,a most likely estimate of 22 days,and a pessimistic estimate of 32 days.What is the expected duration of the activity?

An activity has a pessimistic time that is four times as long as its most likely time and six times as long as its optimistic time.If the activity variance is 12,what is the expected time?

-Network logic suggests that: