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Professional Scrum Developer 1 (PSD I) Questions and Answers

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Questions # 21:

What is the step to take in TDD after the tests have failed?

Options:

Meet with the team to see why it fails

Change the test in a way that is passes

Run it again to verify it fails.

Write the code to satisfy the test

Answer

Explanation

In TDD you start with writing the test before the code. This test cannot pass. If it does, the test is wrong. When the tests are written, the production code to satisfy the test will be written. Once all the tests succeeds, the product code is done.

Questions # 22:

Which metric is least useful when measuring code maintainability?

Options:

Function points

Cyclometic complexity

Depth of inheritance

Answer

Explanation

The other two are good metrics. Function points are the points representing the amount of business functionality.

Questions # 23:

True or False: Best Practices are recommended to solve complex problems.

Options:

True

False

Answer

Explanation

Detailed Explanation: Best practices are based on past experiences and may not apply to complex, unpredictable problems. Empirical approaches and experimentation are better suited to such challenges.

Questions # 24:

What is test first development?

Options:

The continuous restructuring of software to retain flexibility

Having the tester in the development team write the test plans before coding

Creating tests before satisfying them

Testing existing code before adding more code to it

Answer

Explanation

Test first development is a different way of saying TDD.

Questions # 25:

When should the developers create their first automated build?

Options:

Just before the first check-in

Just before the product is released

When the product owner asks for a build

Just before the end of the sprint

As soon as there is code in the version control system

Answer

Explanation

Automated builds should be changed everytime the codebase gets changed. This happens the first time when the first bit of code gets added to the version control system.

Questions # 26:

What is not a desirable characteristics of a unit test?

Test code is as small as possible

Options:

Execution is fast

Independent of others

Includes exercising the persistence layer

Makes assertions about only one logical concept

Answer

Explanation

you don't want your unit test to really make changes so it cannot exercise the real persistence layer.

Questions # 27:

What is an integration test?

Options:

A test of the user interface

A test that runs during a continuous integration build

A test of multiple units of functionality

A test of a single unit of functionality

Answer

Explanation

An integration test is a test of multiple units of functionality.

Questions # 28:

Which best describes the Product Backlog? (choose the best answer)

Options:

It is allowed to grow and change as more is learned about the product and its customers.

It provides just enough information to enable a Scrum Team to start the design phase of a product.

It is baselined to follow change management processes.

It contains all foreseeable tasks and requirements from which the Scrum Team can develop and maintain a complete project plan.

Answer

Explanation

Detailed Explanation: The Product Backlog is a dynamic artifact that evolves as the Scrum Team learns more about customer needs and product requirements. It reflects Scrum's empirical nature.

Questions # 29:

What should the Scrum Team do during the first Sprint? (choose the best answer)

Options:

Analyze, describe, and document the requirements for the subsequent Sprints.

Define the major product features and a release plan architecture.

Make up a plan for the rest of the project.

Create at least one valuable and useful Increment.

Answer

Explanation

Detailed Explanation: The first Sprint is focused on delivering a valuable and usable Increment. This embodies Scrum's iterative approach, where value is delivered early and feedback is gathered.

Questions # 30:

When is a system's architecture decided? (choose the best answer)

Options:

It is designed along with the vision, before the first Sprint.

In the beginning of the project, during Sprint 0.

Before writing code.

Throughout development, as understanding emerges.

Answer

Explanation

Detailed Explanation: In Scrum, system architecture evolves iteratively. Decisions are made throughout development as more is learned about the requirements and product, aligning with Agile principles.

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