Differentiate between activities and milestones and explain how each is represented in project schedules.

Differentiate between activities and milestones and explain how each is represented in project schedules.

• A. Activities are tasks with duration and resources; milestones are significant events with zero duration; both are represented in network diagrams.
• B. Milestones have durations; activities have no duration.
• C. Both are represented as nodes with edges.
• D. Milestones replace the schedule baseline.

Answer: (A)

Activities are the actual work items that take time and use resources; milestones are significant events that mark a point in the project and have zero duration. In CPM/PERT schedule networks, you visualize how work proceeds by linking activities to show their order and dependencies, while milestones appear as key events that indicate completion of a phase or deliverable without consuming time. Depending on the diagram style, activities are shown with duration on the path, and milestones are shown as events along that path to mark important checkpoints. This combination lets you see both how long tasks will take and when important goals should be reached. Milestones do not have duration, they don’t replace the schedule baseline, and while network diagrams can place events and activities together, it’s not accurate to say both are simply nodes in every representation.

Activities are the actual work items that take time and use resources; milestones are significant events that mark a point in the project and have zero duration. In CPM/PERT schedule networks, you visualize how work proceeds by linking activities to show their order and dependencies, while milestones appear as key events that indicate completion of a phase or deliverable without consuming time. Depending on the diagram style, activities are shown with duration on the path, and milestones are shown as events along that path to mark important checkpoints. This combination lets you see both how long tasks will take and when important goals should be reached. Milestones do not have duration, they don’t replace the schedule baseline, and while network diagrams can place events and activities together, it’s not accurate to say both are simply nodes in every representation.