Network
In project scheduling, a network is a diagram that maps activities and their logical dependencies, showing sequence, concurrency, and paths that drive total duration (critical path); commonly called a project schedule network diagram.
Key Points
- Also known as a project schedule network diagram; it visualizes activity sequencing and dependencies.
- Enables critical path and float analysis, supports leads and lags, and highlights parallel work.
- Typically built with the Precedence Diagramming Method (AON) using FS, SS, FF, and SF relationships.
- Forms the basis for schedule development, what-if analysis, and ongoing schedule updates.
Example
For an IT rollout: A = Configure server, B = Install application, C = Migrate data, D = System test. B and C depend on A; D depends on both B and C. Drawing the network reveals two parallel paths (A-B-D and A-C-D). The longer path determines the critical path and overall project duration.
PMP Example Question
A project manager needs a visual model to analyze dependencies and determine the critical path before finalizing the baseline. What should the PM develop?
- Project schedule network diagram
- Milestone list
- RACI chart
- Product breakdown structure
Correct Answer: A — Project schedule network diagram (network)
Explanation: The network shows activity relationships and paths, enabling critical path and float analysis; the other options do not model dependencies.
