10. 5Why - Principle

1 point possible (graded)

What principle of 5Why do you know from the lecture?

Machines do not fail, methods do

"People do not fail, processes do"

Processes do not fail, people do

Methods do not fail, machines do.

11. 5Whys - SRC and ORC

1 point possible (graded)

What is the relationship between the systemic root cause (SRC) and the occurrence root cause (ORC)?

The Occurrence Root Cause can be seen as a consequence of the Systemic Root Cause.

The Systemic Root Cause can be seen as a consequence of the Occurence Root Cause.

They have no relationship at all.

13. - 15. 5Whys - CPU Utilization

3 points possible (graded)

Q13- You are given the following 5Why analysis:

1. Why is the website down? The CPU (Central Processing Unit) utilization spiked to over 100% on all servers.

2. Why is the CPU utilization that high? A new part of code contains an infinite loop.

3. Why was this piece of code written? Employee A made a mistake.

4. Why did her mistake get submitted? A didnt write a test run for the feature.

5. Why did she not write a test run? She is a new employee and was not properly trained.

6. Why was she not properly trained? No training procedure for new employees established.

What is the problem statement to this 5Why analysis?

A- No training procedure for new employees established.

B- The CPU utilization is over 100% on all servers.

C- The website is down.

D- Employee A reported that the CPU utilization might spike to over 100% on all servers.

What is the occurrence root cause (ORC)?

A- Employee A didnt write a test run for the feature.

B- The website is down.

C- No training procedure for new employees established.

D- The CPU utilization is over 100% on all servers.

What is the systemic root cause (SRC)?

A- Employee A didnt write a test run for the feature.

B- No training procedure for new employees established.

C- The website was down.

D- The CPU utilization is over 100% on all servers.