Critical path method in Software Engineering - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the Critical Path Method (CPM)?

CPM is a project management technique used to identify the longest sequence of dependent tasks that determine the shortest possible project duration.

beginner

Why is the critical path important in project management?

Because any delay in tasks on the critical path directly delays the entire project completion time.

intermediate

What does it mean if a task has 'float' or 'slack' in CPM?

Float or slack is the amount of time a task can be delayed without affecting the overall project completion date.

intermediate

How do you identify the critical path in a project network?

By calculating the earliest and latest start and finish times for tasks and finding the longest path with zero float.

intermediate

What happens if a task on the critical path is shortened?

The overall project duration can be reduced, as the critical path determines the minimum project time.

What does the critical path represent in a project?

A Tasks with the most resources

B The shortest task in the project

C Tasks that can be delayed without impact

D The longest sequence of dependent tasks

The critical path is the longest sequence of dependent tasks that determines the shortest project duration.

What is 'float' or 'slack' in CPM?

A Extra time a task can be delayed without affecting the project

B The total project duration

C The time a task takes to complete

D The time between project start and finish

Float or slack is the extra time a task can be delayed without delaying the project.

If a task on the critical path is delayed, what happens?

A The entire project is delayed

B Only that task is delayed

C The project finishes earlier

D No effect on the project

Delays on the critical path delay the whole project because it has no slack.

How can the critical path be shortened?

A By adding more tasks

B By delaying non-critical tasks

C By reducing the duration of tasks on the critical path

D By increasing float on all tasks

Shortening tasks on the critical path reduces the total project duration.

Which of these is NOT a characteristic of the critical path?

A It has zero float

B Tasks can be delayed without affecting the project

C It is the longest path of dependent tasks

D It determines the project completion time

Tasks on the critical path cannot be delayed without affecting the project.

Explain the concept of the critical path and why it matters in managing a project.

Think about which tasks control the project finish date.

Describe how float or slack works and how it helps in scheduling tasks.

Consider tasks that can be delayed without delaying the project.