Which network schedule uses the Activity-on-Arrow method?

Which network schedule uses the Activity-on-Arrow method?

• A. Gantt Chart
• B. Network Diagram
• C. Arrow Diagram Method (ADM)
• D. Precedence Diagramming Method (PDM)

Answer: (C)

Activity-on-Arrow is a way to represent a project network by drawing each activity as an arrow from a starting event to an ending event, with the events shown as nodes. The duration is typically reflected by the arrow’s length, and the arrows connect to show how one activity leads to the next. This approach is exactly what the term “Activity-on-Arrow” describes, making it the correct characterization for a network schedule that uses this method. By contrast, the Gantt chart is a timeline of activities shown as bars, focusing on start and finish dates rather than the network relationships. The Precedence Diagramming Method uses boxes (nodes) for activities, with arrows indicating dependencies, so it’s a different way of modeling the network. The distinguishing feature of ADM is that the activities themselves are depicted by arrows, not by nodes.

Activity-on-Arrow is a way to represent a project network by drawing each activity as an arrow from a starting event to an ending event, with the events shown as nodes. The duration is typically reflected by the arrow’s length, and the arrows connect to show how one activity leads to the next. This approach is exactly what the term “Activity-on-Arrow” describes, making it the correct characterization for a network schedule that uses this method.

By contrast, the Gantt chart is a timeline of activities shown as bars, focusing on start and finish dates rather than the network relationships. The Precedence Diagramming Method uses boxes (nodes) for activities, with arrows indicating dependencies, so it’s a different way of modeling the network. The distinguishing feature of ADM is that the activities themselves are depicted by arrows, not by nodes.