DOL Value Stream Mapping 2

Question 1

Which metric in a VSM directly reflects the proportion of time work is actively being processed versus waiting?

Accepted Answer

Process cycle efficiency (PCE)

Answer

Process cycle efficiency is calculated as value-added time divided by total lead time, showing the percentage of time work is actually being worked on.

Question 2

In a value stream map, a 'push' system is represented by which symbol?

Accepted Answer

A striped arrow pointing right

Answer

A striped (push) arrow indicates that work is pushed downstream regardless of the downstream process's capacity or readiness.

Question 3

When mapping the current state, a team discovers a queue of 200 items between two steps. What does this queue primarily indicate?

Accepted Answer

A bottleneck or capacity mismatch upstream

Answer

Large queues between steps signal that the upstream process produces faster than the downstream can consume, revealing a capacity mismatch or bottleneck.

Question 4

A DevOps team wants to reduce lead time by 40%. Which VSM analysis step should they perform first?

Accepted Answer

Identify the step with the longest wait time

Answer

Identifying the longest wait time pinpoints where the most lead time is lost, making it the highest-leverage target for improvement.

Question 5

What does 'takt time' represent in value stream mapping?

Accepted Answer

The available production time divided by customer demand rate

Answer

Takt time is the pace of customer demand — how frequently one unit must be completed to meet demand within available working time.

(DOL) DevOps Leader Practice Test

(DOL) DevOps Leader Practice Test

DOL Value Stream Mapping 2