Practice Test
True or False: Power BI supports source control.
- True
- False
Answer: True.
Explanation: Power BI supports source control and you can use various version control systems, like Azure DevOps (formerly VSTS), Git, TFS etc. to manage your Power BI files.
Which of the following can be used as version control tool for Power BI development?
- a) Git
- b) Azure DevOps
- c) SVN
- d) Microsoft Teams
Answer: a) Git, b) Azure DevOps.
Explanation: Git and Azure DevOps can be used as version control tool for Power BI. SVN and Microsoft Teams are not used as version control systems.
True or False: Power BI does not allow integration with Azure DevOps.
- True
- False
Answer: False.
Explanation: Power BI allows integration with Azure DevOps to leverage the advantages of source control for Power BI assets.
Which of the following are benefits of using source control with Power BI assets?
- a) Backup and recovery
- b) Versioning
- c) Collaboration
- d) Scheduling
Answer: a) Backup and recovery, b) Versioning, c) Collaboration.
Explanation: Source control offers benefits like versioning, backup and recovery, and collaboration among teams. However, it does not directly help with scheduling.
True or False: Power BI datasets can be source controlled.
- True
- False
Answer: False.
Explanation: Power BI does not currently support source control for datasets. It only supports source control for pbix files.
Power BI Desktop integrates with which source control tool by default?
- a) Git
- b) Azure DevOps
- c) TFS
- d) None
Answer: d) None.
Explanation: Power BI Desktop does not integrate with any source control tool by default. You have to manually set up the integration.
Which is recommended for source control strategy with Power BI?
- a) Committing pbix files
- b) Embedding power query scripts in your .NET code
- c) Exporting report definitions and dashboards as Excel files
Answer: a) Committing pbix files.
Explanation: It’s recommended to use a source control system to commit pbix files to track changes and versions of your Power BI reports.
True or False: It’s advisable to frequently commit changes to Power BI files while in development to avoid data loss.
- True
- False
Answer: True.
Explanation: Regular commits during Power BI development are advisable to avoid significant data loss and to maintain a clean history of file changes.
Which approach is recommended for managing collaboration in a Power BI project?
- a) All team members should use a single copy of pbix file.
- b) Each team member should maintain their own copies of pbix files.
Answer: b) Each team member should maintain their own copies of pbix files.
Explanation: It’s advisable to maintain separate copies of pbix files for each team member to avoid conflicts and sync issues.
True or False: DAX scripts can be source controlled.
- True
- False
Answer: True.
Explanation: Even though Power BI does not provide native source control for DAX scripts, you can use tools like Tabular Editor to export these scripts and commit them to a source control system.
Interview Questions
What is an example of a source control system that can be used with Power BI?
Git is an example of a source control system that can be used with Power BI.
How does source control benefit Power BI development?
Source control allows multiple developers to work on the same Power BI project simultaneously, and safely merge their changes and revisions. It also provides a history of changes, making it possible to track and revert mistakes if necessary.
What is a recommended strategy for storing Power BI assets in a source control system?
A recommended strategy is to break down Power BI projects into smaller parts before storing them in a source control system. This enhances collaboration by reducing merge conflicts and making changes easier to understand and manage.
What Power BI assets can be stored in a source control system?
Power BI assets like reports, dashboards, dataflows, and datasets can be stored in a source control system.
Why is it important to implement a good branching strategy in your source control for Power BI assets?
A good branching strategy allows for feature isolation, task-based development, and easy tracking of changes. It also ensures that the main or master branch remains stable and deployable at any given time.
What is the purpose of the ‘master’ branch in a source control strategy for Power BI assets?
The ‘master’ branch serves as the main branch where the source code of HEAD always reflects a stable, deployable state.
Can you use Azure DevOps for source control in Power BI?
Yes, Azure DevOps provides a Git-based version control system that can be used for implementing source control for Power BI.
Should Power BI Desktop files be stored directly in a source control system?
No, because Power BI Desktop files are binary files, they are not suitable for source control. Instead, their components should be exported into textual formats, such as .pbix or .pbit files, which are suitable for source control.
What is a potential issue when multiple individuals are working on a single Power BI file without using source control?
One potential issue is the risk of overwriting changes, as there is a lack of record of who has changed what and when. Source control minimizes this risk by maintaining a history of changes.
What does it mean to “commit” changes in source control in relation to Power BI assets?
To “commit” changes means to save the current state of the Power BI assets to the repository in the source control system. This provides a checkpoint to which you can revert if needed.
What tools or extensions can be used to facilitate the integration of Power BI with Git for source control?
Tools such as Tabular Editor or the Power BI ALM Toolkit can be used to facilitate the integration of Power BI with Git for source control.
How does source control strategy benefit the overall data strategy and data governance in Power BI?
A robust source control strategy improves the overall data strategy and governance by promoting collaboration, tracking changes and revisions, and maintaining the stability of the Power BI project.
How can conflicts be resolved when they arise during the merging of changes in a Power BI source control strategy?
Conflicts can be resolved by manually reviewing and merging the changes. A good source control system provides tools to visualize and manage these conflicts.
What is a ‘Pull Request’ in a source control strategy for Power BI assets?
A ‘Pull Request’ is a process in which a developer makes changes in a separate branch and then requests those changes to be merged into the master branch. It allows for code review and discussion before the changes are integrated.
Can source control strategy be used for versioning of Power BI assets?
Yes, a source control strategy helps in maintaining different versions of Power BI assets, allowing for changes to be tracked and previous versions to be accessed when required.
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