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Scrum PSK-I Practice Test - Questions Answers, Page 2
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Question 11
True or False: Little's Law is used to forecast a Scrum Team's output.
True
False
Little's Law establishes a relationship between three flow metrics: Work in Progress (WIP), Cycle Time, and Throughput. It provides insights into how changes in one metric affect the others in a stable system.
Little's Law is used to understand and manage flow within a system but is not a forecasting tool for output or future performance. It assumes a stable and predictable system where the input and output rates are consistent.
Why Not True?
Forecasting requires variability, historical data, and often different statistical models. While Little's Law supports system predictability and capacity planning, it does not directly project future Scrum Team outputs or delivery dates.
Thus, Little's Law helps teams analyze and optimize flow but is not used for forecasting.
Question 12
Who must change the Work in Progress (WIP) Limits in the Definition of Workflow when urgent work emerges from the Sprint?
(choose the best answer)
The Developers.
The Product Owner.
The Scrum Master.
No one. Urgent work is not a reason to change WIP Limits.
No one. WIP Limits cannot be modified during a Sprint.
In Professional Scrum with Kanban, the Work in Progress (WIP) limits are set as a policy to maintain a sustainable flow of work. Urgent work emerging does not automatically warrant changing these WIP limits; instead, the team should first discuss how to accommodate the urgent work within the existing constraints. Modifying WIP limits for urgent work could undermine the benefits of a controlled flow, which is why urgent work should not be a reason to change WIP limits during a Sprint
Question 13
True or False: If you reduce your batch size, your overall efficiency will always increase.
True
False
Reducing batch size does not always guarantee an increase in overall efficiency. While smaller batch sizes can lead to faster feedback, more frequent deliveries, and reduced risk, there can be situations where reducing the batch size too much results in inefficiencies, such as increased overhead costs or excessive context switching. Thus, the relationship between batch size and efficiency depends on the context, system constraints, and the nature of the work
Question 14
When can a Work in Progress (WIP) Limit change?
(choose the best answer)
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Question 15
A Scrum Team's Definition of Workflow must have defined points at which the Scrum Team considers work to have started and to have finished. This allows the team to track their Work in Progress (WIP). How are these points defined?
(choose the best answer)
Question 16
True or False: Work Item Age is a leading indicator for the length of the Scrum Team's feedback loop for that (in progress) item.
Question 17
You still need a Scrum Master when applying Kanban practices in the Scrum framework.
(choose the best answer)
Question 18
What is a probabilistic forecast intended to communicate?
(choose the best answer)
Question 19
True or False: The Scrum Framework contains elements that can be treated as explicit policies.
Question 20
What are possible benefits of supplementing Scrum with Kanban practices?
(choose the best four answers)
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