Time Facts and Task Relationships

Question 1

This relationship is unusual and is rarely used. It requires Task A to start so that Task B may finish. It is also known as just-in-time (JIT) scheduling.

Answer 1

Start-to-finish (SF)

Question 2

This relationship means Task A must start before Task B can start. This relationship allows both activities to happen in tandem.

Answer 2

Start-to-start (SS)

Question 3

This network diagramming approach is based on the availability of project resources to determine project completion. It is more accurate than the traditional network diagram, but is more complex to create.

Answer 3

Critical chain

Question 4

An opportunity to delay an activity. Also called slack

Answer 4

Float

Question 5

Activities are moved closer together or even overlap (negative time).

Answer 5

Lead

Question 6

Waiting time between activities (positive time).

Answer 6

Lag

Question 7

Allows project phases to overlap to reduce the project duration. This adds risk to the project

Answer 7

Fast tracking

Question 8

Adding resources to reduce the project duration. This adds costs to the project

Answer 8

Crashing

Question 9

The amount of time an activity can be delayed without delaying the next activity’s start date

Answer 9

Free float

Question 10

This relationship means Task A must complete before Task B can begin. This is the most common relationship.

Answer 10

Finish-to-start (FS)

Question 11

The amount of time an activity can be delayed without delaying the project’s end date

Answer 11

Total float

Question 12

This relationship means Task A must complete before Task B does. Ideally, two tasks must finish at exactly the same time, but this is not always the case.

Answer 12

Finish-to-finish (FF)