CAPM Practice Exam Question

A project manager is reviewing the project schedule and notes several tasks that are running concurrently but should have been sequenced. What tool or technique should the project manager use to adjust the dependencies between these tasks?

A) Fast tracking

B) Resource leveling

C) Critical Path Method

D) Precedence Diagramming Method (PDM)

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Best Answer: D) Precedence Diagramming Method (PDM)

Explanation:

The Precedence Diagramming Method (PDM) is the appropriate tool for adjusting and defining task dependencies within a project schedule. This method helps in establishing the correct sequence of tasks by identifying logical relationships and dependencies among them. PDM is a key technique used in the development of a project schedule and is essential for creating a network diagram that visually represents task sequences.

1. Identifying Logical Relationships: PDM involves defining and identifying four types of logical relationships or dependencies between tasks: Finish-to-Start (FS), Start-to-Start (SS), Finish-to-Finish (FF), and Start-to-Finish (SF). By applying these relationships, the project manager can accurately align tasks as they should sequentially occur.
2. Visual Representation of Task Sequences: Using PDM allows for the creation of a network diagram, which is a visual representation of the project’s tasks and their dependencies. This visual aid helps project managers and team members understand the flow of tasks and identify any potential scheduling conflicts or opportunities for rearrangement.
3. Facilitates Schedule Analysis: The network diagram generated using PDM is crucial for conducting further schedule analysis techniques like the Critical Path Method (CPM) or schedule compression techniques. It provides a clear pathway of activities and highlights which sequences are critical for project completion within the scheduled time.
4. Enhances Schedule Flexibility and Optimization: By correctly setting task dependencies, PDM can help in identifying areas where parallel task execution is possible without risk, potentially shortening the project duration (fast tracking) or adjusting resource allocations (resource leveling) more effectively.

Using the Precedence Diagramming Method, the project manager can rectify the sequencing errors observed in the project schedule, ensuring that all tasks are correctly aligned according to their logical dependencies. This will lead to a more efficient and effective project execution phase.