CPM & PERT Schedule Development Flashcards
7 cards from real CST practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 CPM & PERT Schedule Development flashcards as text
In CPM scheduling, a 'milestone' is typically represented as an activity with:
Answer: Zero duration, marking a significant event or decision point
Milestones are zero-duration events that represent key checkpoints, deliverables, or decision gates in the schedule.
Which PERT three-point estimate scenario indicates the highest level of uncertainty for an activity?
Answer: O=2, M=10, P=30 (range of 28 days)
A wider spread between optimistic and pessimistic estimates produces a larger variance, indicating greater uncertainty in the estimate.
The term 'resource leveling' in CPM scheduling refers to:
Answer: Shifting activity start dates within available float to smooth resource demand without changing the project end date
Resource leveling resolves resource conflicts by delaying non-critical activities within their float, smoothing peaks and valleys in resource demand.
A Start-to-Start (SS) relationship with a lag of 2 days between Activity A and Activity B means:
Answer: B cannot start until at least 2 days after A starts
An SS+2 lag requires B's start to be delayed at least 2 days after A begins, allowing partial completion of A before B commences.
When a CPM network is statused and the data date is advanced, activities that were planned to start but have not yet begun are considered:
Answer: Out-of-sequence if they have predecessors that are not yet complete
If an activity begins before all its predecessors are finished, it is out-of-sequence, which can create logic conflicts in the schedule.
In CPM, which of the following is NOT a valid method to shorten the critical path duration?
Answer: Adding float to non-critical activities
Adding float to non-critical activities has no effect on the critical path; only actions that reduce the duration or overlap of critical path activities shorten the project.
A scheduler notices that two separate paths through the network both calculate to the same longest duration. This condition is referred to as:
Answer: Multiple critical paths, which increases schedule risk
Multiple critical paths mean there are two or more sequences of activities that all must be managed with equal rigor to prevent project delay.