[2022年01月20日] 検証済みのPSD問題集と122格別な問題
PSD問題集合格保証付きの合格できるPSD試験2022年更新
質問 58
What is an integration test?
- A. A test of multiple units of functionality
- B. A test of the user interface
- C. A test of a single unit of functionality
- D. A test that runs during a continuous integration build
正解: A
解説:
An integration test is a test of multiple units of functionality.
質問 59
What is static analysis?
- A. A tool that inspects the correctness of static keyword usage
- B. Work performed by the business analyst
- C. Analysis performed on software at runtime
- D. Analysis performed on code
正解: D
解説:
Static analys is performed on code (and not a running program or build).
質問 60
What is the size of the scrum team?
- A. typically 10 or fewer people
- B. this differs every sprint
- C. 3 to 11
- D. at least 8 people
正解: A
解説:
The scrum guide says: "The Scrum Team is small enough to remain nimble and large enough to complete significant work within a Sprint, typically 10 or fewer people. "
質問 61
Improvements that are outcome of the sprint retrospective can be added to the sprint backlog for the next sprint.
- A. True
- B. False
正解: A
解説:
The scrum guide says: "The most impactful improvements are addressed as soon as possible. They may even be added to the Sprint Backlog for the next Sprint."
質問 62
What is the commitment for the product backlog?
- A. Sprint goal
- B. Definition of done
- C. Sprint planning outcome
- D. Product goal
正解: D
解説:
If you are not sure, please review the section scrum artifacts in the scrum guide.
質問 63
What two things should the developers not do?
- A. Design the full architecture before starting
- B. Work together and self manage to create value
- C. Creating a plan for the entire project
- D. Create a potentially shippable functionality in the sprint
正解: A,C
解説:
Architecture emerges in scrum during the adding of functionality. The plan for the rest of the project cannot be made by the developers, they should just focus on their sprint.
質問 64
Who writes tests in a scrum team?
- A. Most junior developer
- B. Developers
- C. The tester
- D. Product owner
- E. QA specialists
- F. Scrum master
正解: B
解説:
Tests are part of the development, and the development is done by the developers. There are no specific roles in scrum, even though members of the scrum team can have their own expertise.
質問 65
Who is responsible for the sizing / estimate of the product backlog?
- A. Developers
- B. Scrum team
- C. The product owner
- D. The scrum master lets them know whether they need to be preset
正解: A
解説:
The scrum guide says: "The Developers who will be doing the work are responsible for the sizing. The Product Owner may influence the Developers by helping them understand and select trade-offs."
質問 66
What are two reasons to use mock objects in unit tests?
- A. Isolating a particular system component for controlled testing
- B. The behavior of a given object can be emulated to the system under test
- C. To increase tight coupling
- D. They are machine-generated and eliminate the need to write code by hand
- E. TDD is impossible without them
正解: A,B
解説:
Mock objects are simulating the behavior of dependencies such as persistance layers or APIs. By mocking these you can be sure about what you are testing, and not accidentally testing the external dependency.
質問 67
What is the practice of branching code in a version control system?
- A. Tagging or labeling a particular codebase as production ready
- B. Releasing a specific codebase into a production environment
- C. Creating a copy of existing code, isolated from the original code
- D. Combining two or more branches of code into a single code base
正解: C
解説:
Branching means that you create a new version from the code that exists indepently from the original code. It is not isolated forever, it can be merged back later.
質問 68
How long should the sprint review take? Choose the best answer
- A. Max two hours for a one month sprint
- B. Max four hours
- C. Max four hours for a one-month sprint
- D. Max two hours
- E. Until everyone is done.
正解: C
解説:
The scrum guide says: "The Sprint Review is the second to last event of the Sprint and is timeboxed to a maximum of four hours for a one-month Sprint."
質問 69
When might a sprint be cancelled?
- A. Never, the sprint must always be finished.
- B. When the project manager decides this.
- C. When the developers feel they aren't ready
- D. When the sprint goal becomes obsolete
正解: D
解説:
The product owner can cancel the sprint if the sprint goal becomes obsolete. This is a very rare event. It can happen when a company losing a client or the client decides to take a completely different turn.
質問 70
Several scrum teams share the scrum master. Developers of multiple teams approach the scrum master, because they need fulltime commitment from the same technical specialist for the next sprint. What should the scrum master consider for the response to this problem? Choose the two best answers.
- A. The need to have all developers busy with work
- B. The ability of the scrum teams to produce integrated increments
- C. The benefit of the teams figuring it out theirselves
- D. The need for a stable velocity
正解: B,C
解説:
The working increment is the goal of the sprint and should be kept in mind. The self-managing aspect of the teams is also crucial to take in mind. Stable velocity and optimally used developers are not the scrum master's concern.
質問 71
What relation does scrum have to development practices?
- A. Scrum is complemented by good development practices
- B. Scrum requires all development practices
- C. Scrum has no relationship to development practices
- D. Scrum requires a specific set of development practices
正解: A
解説:
Scrum requires no development practices, but good development practices do help and make scrum more successful.
質問 72
Who is responsible for a sprint backlog item that contains several database tasks?
- A. The company's database specialist
- B. Product owner
- C. Scrum master
- D. The developers
正解: D
解説:
Developers are responsible for conducting the work on the sprint backlog
質問 73
How is architecture decided in a scrum team during a project?
- A. The architecture cares for itself as code is written and deployed
- B. The developers emerge architecture as the system is created
- C. The architect works in the early part of each sprint to define the architecture of that sprint
- D. An architect on the team undertakes all architecture tasks
- E. Upfront designs are presented to the developers prior to the first sprint
正解: B
解説:
Architecture emerges as more is created. There are often guidelines and principles in place.
質問 74
Product backlog items are refined by
- A. Scrum master and product owner
- B. Developers and product owner
- C. Developers
- D. Scrum team
- E. Product owner
- F. Scrum master
正解: D
解説:
In the scrum guide it says: "The Scrum Team may refine these items during this process, which increases understanding and confidence."
質問 75
What would not be considered refactoring?
- A. Extracting interfaces
- B. Reordering method parameters to improve readability
- C. Renaming things to be more logical
- D. Changing external interfaces or APIs
- E. Extracting methods
正解: D
解説:
Refactoring is only about the own code, so not about changing an external interface or api.
質問 76
The three pillars of empirical process control are:
- A. respect
- B. inspection
- C. transparency
- D. adaptation
- E. commitment
- F. planning
正解: B,C,D
解説:
If you are not sure, please review the Scrum theory section in the scrum guide
質問 77
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