PK0-005 Project Life Cycle Practice Question
In a network diagram using PDM, activity B can start only after activity A has finished. Which dependency type does this represent?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Finish-to-Start (FS)
Finish-to-Start (FS) is the most common dependency, where the successor activity cannot start until the predecessor activity has finished.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
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Finish-to-Finish (FF)
Why it's wrong here
Finish-to-Finish links B's completion to A's completion, so B could begin before A ends. The stem requires B's start gated by A's finish, which is Finish-to-Start. FF is used where two activities must conclude together, such as testing finishing alongside documentation.
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Start-to-Finish (SF)
Why it's wrong here
Start-to-Finish makes A's completion depend on B's start, the reverse of the stem's relationship. The stem describes B starting after A finishes, which is Finish-to-Start. SF is rarely used, typically for just-in-time delivery where a new shift's start releases the old one.
- ✓
Finish-to-Start (FS)
Why this is correct
Finish-to-Start defines the successor's start as gated by the predecessor's completion, exactly matching the stem's condition that B begins only after A finishes. The other dependency types (SS, FF, SF) permit overlap or reversed sequencing.
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Start-to-Start (SS)
Why it's wrong here
Start-to-Start ties B's start to A's start, allowing both to begin simultaneously. The stem gates B's start on A's completion, which is Finish-to-Start. SS suits parallel activities that must commence together, such as two inspection tasks starting on the same date.
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