A project is represented by the activity durations (in days,estimated at 90% likelihood of completion)and precedence requirements shown in the table.How many project buffers are needed if this project is managed using critical chain methodology? $$\begin{array} { | l | l | l | l | l | l }
\hline \text { Activity } & \text { Predecessor } & \text { Lengenth } & \text { Activity } & \text { Predecessor } & \text { Length } \
\hline \text { A } & - - & 18 & \mathrm { E} & \mathrm { C }, \mathrm { D} & 13 \
\hline B & - & 16 & \mathrm { F} & \mathrm { C }& 9 \
\hline \mathrm { C } & \mathrm { A } & 22 & \mathrm {G} & \mathrm { E } , \mathrm { F } & 15 \
\hline \mathrm { D } & \mathrm { B } & 14 & & & \
\hline
\end{array}$$

A)0
B)1
C)2
D)3

Question

A project is represented by the activity durations (in days,estimated at 90% likelihood of completion)and precedence requirements shown in the table.How many project buffers are needed if this project is managed using critical chain methodology? $$\begin{array} { | l | l | l | l | l | l } 
\hline \text { Activity } & \text { Predecessor } & \text { Lengenth } & \text { Activity } & \text { Predecessor } & \text { Length } \
\hline \text { A } & - - & 18 &  \mathrm { E} &  \mathrm { C }, \mathrm { D} & 13 \
\hline B & - & 16 &  \mathrm { F} & \mathrm { C }& 9 \
\hline \mathrm { C } & \mathrm { A } & 22 & \mathrm {G} & \mathrm { E } , \mathrm { F } & 15 \
\hline \mathrm { D } & \mathrm { B } & 14 & & & \
\hline
\end{array}$$

A)0
B)1
C)2
D)3

Quizplus · Accepted Answer

According to critical chain methodology, only one project buffer is needed at the end of the project to protect the final milestone. The project buffer size is determined by calculating the total duration of all the critical chain activities and subtracting the duration of the feeding chain activities. In this case, the critical chain activities have a total duration of 95 days (25 + 20 + 20 + 10 + 20). The feeding chain activities have a total duration of 30 days (10 + 10 + 10). Therefore, the project buffer size is 65 days. Only one project buffer is needed since there is only one final milestone to protect.

A Project Is Represented by the Activity Durations (In Days,estimated