ExpertHard1 markShort Answer
Task 6: Plan and manage schedulecritical-path-methodnetwork-diagramschedule-calculationproject-duration
PMP · Question 30 · Task 6: Plan and manage schedule
A project has the following network diagram with activity durations:<br/><br/>Activity A: 4 days (no predecessors)<br/>Activity B: 6 days (predecessor: A)<br/>Activity C: 3 days (predecessor: A)<br/>Activity D: 5 days (predecessors: B, C)<br/>Activity E: 2 days (predecessor: D)<br/><br/>What is the total project duration in days? (Enter numbers only)
A project has the following network diagram with activity durations:<br/><br/>Activity A: 4 days (no predecessors)<br/>Activity B: 6 days (predecessor: A)<br/>Activity C: 3 days (predecessor: A)<br/>Activity D: 5 days (predecessors: B, C)<br/>Activity E: 2 days (predecessor: D)<br/><br/>What is the total project duration in days? (Enter numbers only)
How to approach this question
Calculate the critical path by finding the longest path through the network. Path A-B-D-E = 4+6+5+2 = 17 days. Path A-C-D-E = 4+3+5+2 = 14 days. The critical path is 17 days.
Full Answer
Critical path method requires calculating all possible paths and selecting the longest. Path 1: A(4) + B(6) + D(5) + E(2) = 17 days. Path 2: A(4) + C(3) + D(5) + E(2) = 14 days. Critical path = 17 days.
Common mistakes
Adding all activity durations instead of finding the critical path, or miscalculating the path dependencies.
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