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質問 65
Upon what type of process control is scrum based?
- A. Deductive
- B. Empirical
- C. Hybrid
- D. Technical
正解: B
解説:
If you are not sure, please review the Scrum theory section in the scrum guide
質問 66
Which three of the following are feedback loops in scrum?
- A. Release planning
- B. Daily scrum
- C. Sprint review
- D. Refinement meeting
- E. Sprint retrospective
正解: B,C,E
解説:
Refinement meeting and release planing are no scrum events. The others are, and they are all about feedback: inspection and adaptation. (And in order for the inspection to have a good outcome, the artifacts need to be transparent)
質問 67
When should a newly discovered huge bug of a previous sprint be fixed?
- A. Immediately.
- B. Don't fix it, but stub out the code that causes it.
- C. Depends on what the product owner wants.
- D. Don't fix it immediately, but change the test to not show it as a temporary fix.
正解: C
解説:
Hiding the bug won't make it go away. Discussing with the product owner is a good step to take, because he knows what work leads to maximum value.
質問 68
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 69
Which best describes the practice of expressing requirements as acceptance tests?
- A. Regression testing
- B. Quality Oriented Requirements Development
- C. Objective Driven Development
- D. Acceptance test driven development
正解: D
解説:
This is pretty much the definition of ATDD.
質問 70
The product owner determines how many product backlog items the developers select for the sprint in the sprint planning.
- A. True, if the developers have enough capacity
- B. False, the project manager does that
- C. True
- D. False
- E. True, in line with what was promised to the stakeholders
- F. False, the scrum master does that
正解: D
解説:
It is false, the developers select the items, because they will have to commit to it.
質問 71
What topics can be addressed during the sprint review? Choose the best answer.
- A. All of these
- B. Coding and engineering practices
- C. The scrum process
- D. The increment
正解: A
解説:
These are all potentional topics for the sprint review. If you are not sure, please read the sprint review section in the scrum guide again.
質問 72
The practice of decomposing a requirement into failing tests is called:
- A. Regression testing
- B. Behavior driven development
- C. Scrum testing
- D. Acceptance test driven development
正解: D
質問 73
What is a sprint burn down chart?
- A. A chart that shows whether bugs came up
- B. A chart showing progress towards the product goal
- C. Visual representation of work that is still to do and time that is left
- D. Visual representation of the product backlog items left
正解: C
質問 74
The practice of decomposing a requirement into failing tests is called:
- A. Regression testing
- B. Behavior driven development
- C. Scrum testing
- D. Acceptance test driven development
正解: D
解説:
In ATDD you start with writing tests to represent the requirement. Since you start with this, there is no production code to satisfy the test which is why the tests will fail.
質問 75
The goal of the daily scrum is inspecting the progress toward the sprint goal and producing an actionable plan for the next day of work
- A. True
- B. False
正解: A
解説:
If you are not sure, review the daily scrum section in the scrum guide.
質問 76
While developing new functionality, you find a bug that has already been delivered to the customer. What do you do?
- A. Revise the tests to hide the bug from the tests reports
- B. Stub out the code that causes the bug
- C. Fix the bug
- D. Talk to the product owner
正解: D
解説:
The product owner knows what creates most value. Since this is already delivered, it is not part of the current sprint.
質問 77
What event is timeboxed?
- A. Sprint
- B. All of these
- C. Sprint retrospective
- D. Sprint planning
- E. Sprint review
- F. Daily Scrum
正解: B
質問 78
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 79
Why does a test written using TDD always fail?
- A. Because the tests are checked in before the code exists
- B. Because the test needs to be refactored
- C. Because the product code to satisfy the test doesn't exist yet
- D. Because testers are terrible coders
正解: C
解説:
TDD stands for test driven development. It makes developers think before starting to code. This leads to better organized code. It requires the developer to write the code for the test first, the test fails because the code it's testing doesn't exist yet.
質問 80
What is a unit test?
- A. A technique for ensuring that units of co-dependent systems integrate correctly
- B. A way to ensure product code satisfies the user requirements
- C. A test that isolates and verifies individual units of functionality
- D. A test that ensures a specific method integrates properly with the code calling it
正解: C
解説:
A unit test is a test that isolates and verifies the functionality of one unit.
質問 81
Which are four attributes of a good bug report?
- A. Includes code for a proposed fix
- B. Expected results and observed results
- C. Provides simple and repeatable reproduction steps
- D. Explains some new system functionality desired
- E. Includes build or version number where bug was found
- F. Screenshots or pictures of the bug in action, if possible
正解: B,C,E,F
質問 82
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 83
If multiple teams are working on the same product, they should each have their own product backlog
- A. True
- B. False
正解: B
解説:
One product backlog per product
質問 84
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 85
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