DOL Lean Practices 2

Question 1

In Lean thinking, what does the concept of 'Muda' refer to?

Accepted Answer

Waste — activities that consume resources without adding value

Answer

Muda is the Japanese term for waste, encompassing any activity that consumes resources but does not add value from the customer's perspective.

Question 2

Which Lean principle focuses on producing only what the next process step needs, when it needs it?

Accepted Answer

Pull system

Answer

A pull system triggers production or work based on downstream demand, preventing overproduction and reducing inventory waste.

Question 3

A DevOps team uses A3 problem solving. What is the primary purpose of the A3 report?

Accepted Answer

Provide a structured single-page problem-solving and communication tool

Answer

The A3 report (named for the paper size) is a Lean tool that captures problem definition, current state, root cause, countermeasures, and follow-up on a single page.

Question 4

What does 'flow efficiency' measure in a Lean DevOps context?

Accepted Answer

The proportion of time work is actively being processed versus total lead time

Answer

Flow efficiency = touch time / (touch time + wait time), showing how much of a work item's life it is actually being worked on.

Question 5

Which of the following best describes 'Genchi Genbutsu' as applied in DevOps?

Accepted Answer

Going to the actual place where work happens to observe and understand the real situation

Answer

Genchi Genbutsu ('go and see') means leaders and engineers should personally observe the actual work environment rather than relying solely on reports.

(DOL) DevOps Leader Practice Test

(DOL) DevOps Leader Practice Test

DOL Lean Practices 2