Exam 16: Pert CPM models for project management

An immediate predecessor of an activity must be completed before that activity can begin

If an activity is not on the critical path,then the project cannot be delayed if that activity is delayed

When calculating the probability that a project will finish by a certain time,the approximation that is obtained is usually lower than the true probability

The path in a project network with the average duration is the critical path

The PERT three-estimate approach can be used to determine the probability that a project will be completed by a certain time

Which of the following is not a feature of PERT/CPM?

The critical path for the network shown is:

PERT/Cost can be used to monitor budget overruns

AON project networks have which of the following advantages over AOA networks?

If the variance of an activity duration is equal to 1 then all the durations are the same

What is the estimated slack time for activity A?

A forward pass is the process of moving forward through the project network to determine the latest start times and latest finish times of each activity

The project network diagram describes sequential relationships among major activities in a project

The slack of an activity is the difference between the latest finish and the earliest finish times

If two paths are tied for the longest duration,both would be considered to be critical paths

-The expected duration of this project is:

What is the estimated mean time for activity E?

A common assumption when using PERT/Cost is that the costs are incurred at a constant rate throughout the duration of an activity

-What is the estimated slack time for activity W?

When making a backward pass through a project network,you must start at the finish node