Which type of project scheduling technique uses nodes to represent activities?

The project scheduling technique that uses nodes to represent activities is known as Activity-on-Node. In this method, each node or circle in the graphical representation signifies an activity, while the arrows between the nodes indicate the dependencies and the sequence of those activities. This approach allows for a clear visualization of how different tasks interconnect, making it easier to identify the critical path - the longest sequence of dependent tasks that determines the minimum project duration.

The other scheduling techniques mentioned operate differently. Activity-on-Arrow uses arrows to represent activities, with the nodes indicating the starting and ending points. Gantt schedules provide a timeline format that visually represents the duration and timing of activities but does not utilize nodes for representation. Linear scheduling is more suited for projects with repetitive tasks and organizes activities along a timeline without the node and arrow structure characteristic of the activity-on-node method.