Six Sigma Green Belt Certification Practice Exam

What is the definition of an activity network diagram in project management?

1. An analytical tool that emphasizes team interactions

2. An arrow diagram that incorporates practices from PERT and CPM

3. A tool that prioritizes tasks based on business impact

4. A diagram illustrating the relationship between different activities

The correct answer is: An arrow diagram that incorporates practices from PERT and CPM

An activity network diagram is primarily recognized as an arrow diagram that utilizes principles from both Project Evaluation and Review Technique (PERT) and Critical Path Method (CPM). This diagram provides a visual representation of a project's activities and the logical relationships between them, illustrating the sequence and dependencies of tasks involved in a project. By employing PERT and CPM techniques, the activity network diagram allows project managers to identify the critical path, which is the longest sequence of dependent tasks that determines the minimum time required to complete the project. This helps in effective scheduling and resource allocation, ensuring that project timelines are met. Other options, while they describe related concepts within project management, do not capture the specific essence of an activity network diagram. The focus on team interactions, task prioritization, or relationships between activities does not accurately define how this particular tool functions or its purpose in project management. Instead, the primary aim of the diagram is to showcase the flow of activities and their interdependencies, which is crucial for comprehensive project planning and execution.