Activity networks and precedence tables Quiz
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5 questions, one answer each
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1. In an activity-on-arc network, what does an arc represent?
- A. An event
- B. An activity
- C. A float
- D. A critical path
2. What is the duration of a dummy activity?
- A. One unit
- B. The shortest activity duration
- C. Zero
- D. The same as the previous activity
3. Activities X and Y both have W as their only immediate predecessor, and Z follows both. Without a dummy, why is the network ambiguous?
- A. Z would start too early
- B. W would have two durations
- C. Both X and Y would run between the same two events
- D. The network would have two start events
4. K has immediate predecessors G and H; L has immediate predecessor G only. G and H have no other successors. Which drawing shows this?
- A. L starts at the end of G; K starts at the end of H, with a dummy from the end of G to the start of K
- B. K and L both start at the end of G
- C. L starts at the end of H; K starts at the end of G
- D. A dummy from the end of K to the start of L
5. A must precede C, and C must precede F. Nothing else precedes F. What is listed against F in the precedence table?
- A. A and C
- B. C only
- C. A only
- D. No predecessors