ITPEC FE Morning October 2019 Question 54
ITPEC FE Morning October 2019 — Question 54 of 80
Critical Path Method — find the longest path through a project network to determine minimum project duration.
Calculate the total duration of every path from start to finish:
- •(a) A→B→E→I→L = 2+3+1+2+3 = 11
- •(b) A→C→D→E→H→K = 2+3+1+1+3+2 = 12
- •(c) A→C→F→I→L = 2+3+3+2+3 = 13
- •(d) A→C→G→J→L = 2+3+4+2+3 = 14 (longest)
The critical path is (d) A→C→G→J→L with a total duration of 14 days.
Why not others:
- (a) A→B→E→I→L = 11 days, 3 days shorter
- (b) A→C→D→E→H→K = 12 days, 2 days shorter
- (c) A→C→F→I→L = 13 days, 1 day shorter
Key rule: The critical path is the longest path from start to finish — any delay on it delays the entire project. Always check all paths before choosing.
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