PMI-SP Activity Sequencing 3 — Questions and Answers
Question 1: A construction project requires that concrete must cure for 72 hours before framing can begin. This waiting period is best represented as:
- A lead on the Finish-to-Start dependency
- A lag on the Finish-to-Start dependency (Correct answer)
- A discretionary dependency with no duration
- A mandatory Start-to-Start dependency
Correct answer: A lag on the Finish-to-Start dependency
Mandatory waiting time between activities is modeled as a lag on the Finish-to-Start relationship.
Question 2: Which output of the Sequence Activities process is a graphical representation of all scheduled activities and their logical relationships?
- Activity list
- Project schedule network diagram (Correct answer)
- Milestone list
- Activity attributes
Correct answer: Project schedule network diagram
The project schedule network diagram is the key output showing activities and their dependencies graphically.
Question 3: A PMI-SP candidate reviews a network diagram and notices a 'dummy activity' represented by a dashed arrow. This construct is associated with which diagramming method?
- Precedence Diagramming Method (PDM)
- Arrow Diagramming Method (ADM) (Correct answer)
- Critical Chain Method (CCM)
- Dependency Structure Matrix (DSM)
Correct answer: Arrow Diagramming Method (ADM)
Dummy activities in ADM (also called Activity on Arrow) show logical dependencies without consuming resources or time.
Question 4: When sequencing activities, a scheduler uses 'best practices' from previous similar projects to define the preferred order of work. This represents which type of dependency?
- Mandatory internal
- Mandatory external
- Discretionary internal (Correct answer)
- Discretionary external
Correct answer: Discretionary internal
Discretionary internal dependencies are based on knowledge of best practices within the team's domain and are within the team's control.
Question 5: Which input to the Sequence Activities process provides the project's high-level milestones that must be reflected in the network logic?
- Activity list
- Project scope statement
- Milestone list (Correct answer)
- Resource calendars
Correct answer: Milestone list
The milestone list identifies mandatory and optional milestones that constrain or guide how activities must be sequenced.
Question 6: An activity network shows Activity G with no successors. What term describes Activity G's position in the network?
- Predecessor node
- Burst activity
- Terminal node (sink) (Correct answer)
- Merge activity
Correct answer: Terminal node (sink)
An activity with no successors is called a terminal node or sink, representing the end of a network path.
Question 7: A scheduler is updating the network logic after a major scope change adds three new activities. Which document should be updated to formally capture these new sequencing relationships?
- Risk register
- Project schedule network diagram (Correct answer)
- Communications management plan
- Stakeholder register
Correct answer: Project schedule network diagram
The project schedule network diagram must be updated whenever new activities are added or sequencing logic changes.
PMI-SP Activity Sequencing 3
A construction project requires that concrete must cure for 72 hours before framing can begin.
This waiting period is best represented as: