Time Facts & Task Relationships

Question 1

Lag

Answer 1

Waiting time between activities (positive
time

Question 2

Lead

Answer 2

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

Question 3

Crashing

Answer 3

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

Question 4

Fast Tracking

Answer 4

Allows project phases to overlap
to reduce the project duration. Fast-tracking adds
risk to the project.

Question 5

Free Float

Answer 5

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

Question 6

Total Float

Answer 6

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

Question 7

Finish-to-Start (FS)

Answer 7

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

Question 8

Start-to-start (SS)

Answer 8

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

Question 9

Finish-to-finish (FF)

Answer 9

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.

Question 10

Start-to-finish (SF)

Answer 10

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.