What scheduling concept defines the longest sequence of activities that determines the minimum time to complete the project?

What scheduling concept defines the longest sequence of activities that determines the minimum time to complete the project?

• A. GERT
• B. PERT
• C. CPM
• D. Critical Chain Method

Answer: (C)

The scheduling concept tested is the critical path—the longest sequence of dependent activities that determines the project’s minimum completion time. In CPM, you determine earliest and latest start/finish times for each activity; the slack (float) for an activity is the difference between those times. Activities on the path with zero slack form the critical path, and since they have no room to delay without delaying the project, any delay there pushes the project’s finish date. Other approaches address different aspects: PERT uses probabilistic time estimates to handle uncertainty, GERT allows probabilistic branching in the network, and the Critical Chain Method focuses on resource constraints and buffers rather than the overall duration path. The crucial idea is that the critical path defines the minimum possible duration of a project.

The scheduling concept tested is the critical path—the longest sequence of dependent activities that determines the project’s minimum completion time. In CPM, you determine earliest and latest start/finish times for each activity; the slack (float) for an activity is the difference between those times. Activities on the path with zero slack form the critical path, and since they have no room to delay without delaying the project, any delay there pushes the project’s finish date.

Other approaches address different aspects: PERT uses probabilistic time estimates to handle uncertainty, GERT allows probabilistic branching in the network, and the Critical Chain Method focuses on resource constraints and buffers rather than the overall duration path. The crucial idea is that the critical path defines the minimum possible duration of a project.