HKSM

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?

1. Project schedule network diagram
2. Milestone list
3. RACI chart
4. 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.