Activity networks and critical paths

Activity networks and critical paths Quiz

Spec DE1–DE4 · AQA A-Level Further Maths: Quiz

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5 questions, one answer each

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1. In an activity-on-node network there are arrows from $B$ and from $C$ into $E$ . What does this mean?
- A. $E$ must finish before $B$ and $C$
- B. $B$ and $C$ must both finish before $E$ can start
- C. $E$ can start when either $B$ or $C$ finishes
- D. $B$ , $C$ and $E$ all start together
2. An activity has predecessors with earliest finish times 8 and 11. What is its earliest start time?
- A. Day 11
- B. Day 8
- C. Day 19
- D. Day 3
3. An activity is followed by two activities whose latest start times are 14 and 10. What is its latest finish time?
- A. Day 24
- B. Day 14
- C. Day 10
- D. Day 4
4. An activity has earliest start time 5, duration 4 and latest finish time 14. What is its float?
- A. 9 days
- B. 0 days
- C. 4 days
- D. 5 days
5. Which statement about a critical activity is true?
- A. It has the longest duration
- B. Any delay to it delays the project
- C. It has positive float
- D. It has no predecessors