Professional Scrum Developer bài 5 - 2024 Dec 12 - 60 câu

What relationship does Scrum have to development practices? (choose the best answer)

• Scrum requires specific development practices.

• Scrum has no relationship to development practices.

• Scrum requires all development practices.

• Scrum is complemented by development practices.

Answer explanation

Scrum is a framework that guides teams in managing their work, but it does not dictate specific development practices. Instead, it is complemented by various development practices that enhance its effectiveness.

When should the Developers on a Scrum Team be replaced? (choose the best answer)

• As needed, with no special allowance for changes in productivity.

• Never, it reduces productivity.

• As needed, while taking into account a short-term reduction in productivity.

• Every Sprint to promote shared learning.

Answer explanation

Developers should be replaced as needed, considering that this may lead to a temporary drop in productivity. This approach balances team dynamics and project needs while acknowledging the adjustment period.

How often should Development Team membership change?

• As needed, with no special allowance for changes in productivity.

• Never, it reduces productivity.

• As needed, while taking into account a short-term reduction in productivity.

• Every Sprint to promote shared learning.

Answer explanation

The correct choice acknowledges that Development Team membership should change as needed, while recognizing that such changes may temporarily reduce productivity. This approach balances flexibility with team effectiveness.

Select three reasons why automated builds are important.

• They allow frequent validation of the unit of software being worked on, ensuring it remains in a potentially shippable state.

• They support Continuous Integration.

• They clearly define the build process

• They ensure your product remains bug free

• They eliminate the need for Build Engineers

Answer explanation

Automated builds are crucial as they enable frequent validation of software, support Continuous Integration, and clearly define the build process, ensuring the software remains in a potentially shippable state.

You are the Scrum Master of a new, to be developed product. Development is going to require 45 people. What is a good first question for you to suggest the group thinks about when forming into teams?

• Who are going to be the team leads?

• What is the right mixture of senior and junior people on each team?

• Who are the subject matter experts on each team?

• How will we make sure all teams have the right amount of expertise?

Answer explanation

The correct first question is about ensuring all teams have the right amount of expertise. This is crucial for balanced team performance and effective collaboration, making it a priority in team formation.

How is management external to the Scrum Team involved in the Daily Scrum?

• The Product Owner represents their opinions.

• The Scrum Master speaks on their behalf.

• Management gives an update at the start of each Daily Scrum.

• Managers are not required at the Daily Scrum

Answer explanation

Managers are not required at the Daily Scrum, as this event is primarily for the Scrum Team to synchronize and plan their work. External management involvement is not necessary for the effectiveness of the Daily Scrum.

What are two ways Developers can ensure a good application architecture? (choose the best two answers)

• The Developers at Sprint 0 create infrastructure that will be needed later.

• The Developers have a set of guiding architecture principles that are understood and followed when writing code.

• The Developers focus only on adding functionality. The architecture will take care of itself as the Developers add functionality

• The Scrum Team assigns someone to the role of software architect to provide architectural oversight

• Architecture is an ongoing discussion by the Developers, focusing on implementing current Sprint Backlog items

Answer explanation

Developers ensure good architecture by following guiding principles for consistency and engaging in ongoing discussions about architecture during sprints, which helps adapt to changes and maintain quality.

What are two reasons to use mock objects in unit tests? (choose the best two answers)

• They are machine-generated and eliminate the need to write code by hand

• Isolating a particular system component for controlled testing

• The behavior of a given object can be emulated to the system under test

• TDD is impossible without them

• To decrease cyclomatic complexity

Answer explanation

Mock objects are useful for isolating a system component for controlled testing and emulating the behavior of objects, allowing for focused and effective unit tests without dependencies on other components.

Which phrase best describes a Product Owner?

• Requirements engineer.

• Value optimizer.

• Team manager.

• Go-between between the Developers and customers.

Answer explanation

The Product Owner is best described as a 'Value optimizer' because their primary role is to maximize the value of the product by prioritizing features and ensuring alignment with customer needs, rather than just managing teams or requirements.

Choose two benefits of Continuous Integration. (choose the best two answers)

• It eliminates bugs completely.

• It leads to higher transparency and rapid feedback for the team.

• The build is executed once every night and at least once each weekend.

• It can increase collaboration within the Developers.

Answer explanation

Continuous Integration enhances team dynamics by fostering collaboration among developers and provides higher transparency and rapid feedback, allowing teams to identify issues early and improve overall project quality.