Question 1

Mick has a project consisting of eight activities (listed in the table with durations and precedence requirements)to complete.He assigned his intern Guinness to sketch a network diagram in AOA and Guinness produced the sketch shown below.Discuss any issues with the apprentice's diagram.
 $$\begin{array} { | l | l | l|} 
\hline \text { Activity } & \text { Activity time } & \text { Predecessar } \
\hline\mathrm { A } & 6 & \
\hline\mathrm { B }& 8 & \
\hline \mathrm { C } & 5 & \text { A } \
\hline \mathrm { D } & 9 & \text { A, B } \
\hline \mathrm { E } & 12 & \mathrm {~A} \
\hline \mathrm { F } & 11 & \mathrm { D } , \mathrm { E } \
\hline \mathrm { G } & 6 & \mathrm { C } , \mathrm { F } \
\hline
\end{array}$$

Accepted Answer

The answer of Mick has a project consisting of eight...

Question 2

-Which of the activities in the diagram have slack?

Accepted Answer

A) C and D 
B) B and D 
C) C and E 
D) B and E

Question 3

What is the cost to finish this project (all activity durations are in weeks and costs in US dollars)as quickly as possible?
 $\begin{array}{|l|l|l|l|l|l|} 
\hline &&\text { Normal }&\text { Minimum }&\text { Normal }\  
\text { Activity } & \text {  Predecessor } & \text { Time } &\text { Time }  & \text { Cost }&\text { Crash Cost }\  
\hline \mathbf{A} & & 12 & 10 & 1000 & 1500 \
\hline \text { B } & \text { A } & 5 & 3 & 1200 & 1950 \
\hline \text { C } & \text { A } & 9 & 7 & 1500 & 2100 \
\hline \text { D } & \text { B, C } & 14 & 10 & 1800 & 2100 \
\hline \text { E } & \text { B } & 4 & 3 & 1400 & 1875 \
\hline \text { F } & \text { D } & 9 & 8 & 1000 & 1450 \
\hline \text { G } & \text { E } & 7 & 5 & 700 & 1200 \
\hline \text { H } & \text { F, G } & 11 & 8 & 2000 & 3000 \
\hline \text { I } & \text { H } & 8 & 6 & 1100 & 1700 \
\hline 
\end{array}$

Accepted Answer

The answer of What is the cost to finish this...

Question 4

The heir to the throne was due 56 days from now and the first-time father had a serious construction project on his hands converting his man cave into a nursery.The seven activities,their normal and expedited times (in days)and costs appear in the table.What is the minimum cost to ensure that this project is completed in 56 days? Which activities should be reduced and by how many days?
 $$\begin{array} { | l | l | l | l | l | l |} 
\hline & \text { Normal } & \text { Crash } & \text { Normal } & \text { Crash } & \
\text { Activity }  & \text { time } & \text { time } & \text { Cost } & \text { Cast } & \text { Predecesar } \
\hline\mathrm {  A }& 5 & 500 & 1100 & \
\hline \mathrm { B } & 18 & 15 & 900 & 2300 &\mathrm {  A } \
\hline \mathrm { C } & 12 & 9 & 2500 & 3000 & \mathrm { A } \
\hline \mathrm { D } & 9 & 7 & 500 & 650 &\mathrm { B } \
\hline \mathrm { E } & 15 & 12 & 3000 & 5000 &\mathrm { B } \
\hline \mathrm { F } & 12 & 10 & 4000 & 5000 & \mathrm { C } , \mathrm { D } \
\hline \mathrm {G}&20&15&3600&4800& \mathrm {E,F}\
\hline
\end{array}$$

Accepted Answer

The answer of The heir to the throne was due...

Question 5

-Use the Gantt chart and activity list to determine which resource has the greatest continual use. $$\begin{array} { | l | l | l | l | } 
\hline \text { Activity } & \text { Resources } & \text { Activity } & \text { Resources } \
\hline  \mathrm {R }& 3 &  \mathrm { M } & 1 \
\hline \mathrm { H } & 1 &  \mathrm { K } & 5 \
\hline \mathrm {G } & 4 & \mathrm {~J} & 3 \
\hline \mathrm { F } & 2 & \mathrm { P } & 1 \
\hline \mathrm { B } & 2 & \mathrm {S } & 2 \
\hline \mathrm { T } & 4 & \mathrm {~W} & 3 \
\hline 
\end{array}$$

Accepted Answer

A) Resource 3 
B) Resource 1 
C) Resource 2 
D) Resource 4

Question 6

AOA networks have an advantage over AON networks:

Accepted Answer

A) If the project is complex. 
B) Because they are easier to read for novices. 
C) When it comes to software packages for project management. 
D) When the task of network labeling is considered.

Question 7

An AOA network:

Accepted Answer

A) Cannot show a merge activity. 
B) Cannot show a burst activity. 
C) Cannot have consecutive merge and burst activities. 
D) Can have all of the features described in A-C above.

Question 8

Use the information in the table (all times are in days)to determine the lowest cost minimum completion time if the base cost for each activity finished in normal time is $1,000. $\begin{array}{|l|l|l|l|l|} 
\hline&\text { Normal }&\text {Minimum}&\text { Crash Cost }\ 
\text {Activity}&\text {Time}&\text {Time}&\text { (\$/day) }& \text { Predecessor }\
\hline \mathrm{A}& 10 & 6 & \$ 70 & -- \ 
\hline\mathrm{ B} & 6 & 3 & \$ 40 & -- \
\hline \mathrm{C} & 2 & 2 & - & \mathrm{ B } \
\hline\mathrm{D} & 4 & 2 & \$ 60 &\mathrm{C } \
\hline \mathrm{E} & 6 & 4 & \$ 80 & \mathrm{ A } \
\hline \mathrm{F} & 8 & 5 & \$ 90 & \mathrm{D}, \mathrm{ E }\
\hline 
\end{array}$

Accepted Answer

A) $7,120 
B) $6,910 
C) $6,790 
D) $6,830

Question 9

Finish to start lags are the same as additional activity slack.

Accepted Answer

A) True 
 B)False

Question 10

What are the three principal methods for accelerating a project and under what circumstances might these methods yield little gain?

Accepted Answer

The answer of What are the three principal methods for...

Question 11

The critical path of this network is:

Accepted Answer

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

Question 12

-Use the Gantt chart and activity list to determine which resource is used the most. $$\begin{array} { | l | l | l | l | } 
\hline \text { Activity } & \text { Resources } & \text { Activity } & \text { Resources } \
\hline  \mathrm {R }&5&  \mathrm { M } & 1 \
\hline \mathrm { H } & 1 &  \mathrm { K } & 4 \
\hline \mathrm {G } & 5& \mathrm {~J} & 3 \
\hline \mathrm { F } & 2 & \mathrm { P } & 1 \
\hline \mathrm { B } & 2 & \mathrm {S } & 2 \
\hline \mathrm { T } & 4 & \mathrm {~W} & 3 \
\hline 
\end{array}$$

Accepted Answer

A) Resource 1 
B) Resource 2 
C) Resource 4 
D) Resource 5

Question 13

A complex project that is managed using a top-down,bottom-up approach to network diagrams means that:

Accepted Answer

A) Management's top-down portion of the network contains the greatest detail. 
B) Top management does not have a basis for understanding the actual development of the project. 
C) The top tier summary network does not give top management the basis for understanding the actual development of the project. 
D) The bottom level information cannot be understood by those performing the actual work.

Question 14

AOA is a more useful technique than AON if the project is complex and has many significant milestones.

Accepted Answer

A) True 
 B)False

Question 15

What is project crashing and what are three reasons why it might be important to do so?

Accepted Answer

The answer of What is project crashing and what are...

Question 16

Use the information in the table (all times are in days)to determine the lowest extra cost for an 18-day project if the base cost for each activity finished in normal time is $1,000. $\begin{array}{|l|l|l|l|l|} 
\hline&\text { Normal }&\text {Minimum}&\text { Crash Cost }\ 
\text {Activity}&\text {Time}&\text {Time}&\text { (\$/day) }& \text { Predecessor }\
\hline \mathrm{A}& 10 & 6 & \$ 70 & -- \ 
\hline \mathrm{B} & 6 & 3 & \$ 40 & -- \
\hline\mathrm{C} & 2 & 2 & - &\mathrm{B } \
\hline\mathrm{D} & 4 & 2 & \$ 60 &\mathrm{ C } \
\hline \mathrm{E} & 6 & 4 & \$ 80 &\mathrm{ A } \
\hline\mathrm{F} & 8 & 5 & \$ 90 & \mathrm{D},\mathrm{ E }\
\hline 
\end{array}$

Accepted Answer

A) $400 
B) $420 
C) $440 
D) $460

Question 17

The critical path may not contain a dummy activity.

Accepted Answer

A) True 
 B)False

Question 18

The heir to the throne was due 60 days from now and the first-time father had a serious construction project on his hands converting his man cave into a nursery.The seven activities,their normal and expedited times (in days)and costs appear in the table.Just to be on the safe side,he decided to bring the project in at 53 days in case the delivery was a week early.Tell him what the least expensive 53-day project is;which activities should be reduced in duration,by how many days,and at the total cost,so he can roll up the sleeves on his "World's Greatest Dad" sweatshirt,and get to work.
 $$\begin{array} { | l | l | l | l | l | l |} 
\hline & \text { Normal } & \text { Crash } & \text { Normal } & \text { Crash } & \
\text { Activity }  & \text { time } & \text { time } & \text { Cost } & \text { Cast } & \text { Predecesar } \
\hline\mathrm {  A }& 5 & 500 & 1100 & \
\hline \mathrm { B } & 18 & 15 & 900 & 2300 &\mathrm {  A } \
\hline \mathrm { C } & 12 & 9 & 2500 & 3000 & \mathrm { A } \
\hline \mathrm { D } & 9 & 7 & 500 & 650 &\mathrm { B } \
\hline \mathrm { E } & 15 & 12 & 3000 & 5000 &\mathrm { B } \
\hline \mathrm { F } & 12 & 10 & 4000 & 5000 & \mathrm { C } , \mathrm { D } \
\hline \mathrm {G}&20&15&3600&4800& \mathrm {E,F}\
\hline
\end{array}$$

Accepted Answer

The answer of The heir to the throne was due...

Question 19

In an actual project,one means of crashing critical path activities would be to perform at a lower level of quality.

Accepted Answer

A) True 
 B)False

Question 20

For large projects,network diagrams are more useful if they are completely detailed.

Accepted Answer

A) True 
 B)False

Exam 10: Project Scheduling: Lagging, Crashing, and Activity Networks

-Which of the activities in the diagram have slack?

AOA networks have an advantage over AON networks:

An AOA network:

Finish to start lags are the same as additional activity slack.

What are the three principal methods for accelerating a project and under what circumstances might these methods yield little gain?

The critical path of this network is:

A complex project that is managed using a top-down,bottom-up approach to network diagrams means that:

AOA is a more useful technique than AON if the project is complex and has many significant milestones.

What is project crashing and what are three reasons why it might be important to do so?

The critical path may not contain a dummy activity.

In an actual project,one means of crashing critical path activities would be to perform at a lower level of quality.

For large projects,network diagrams are more useful if they are completely detailed.