AZ-400 Free Practice Test

- (Exam Topic 4)
Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.
After you answer a question in this section, you will NOT be able to return to it. As a result, these questions will not appear in the review screen.
You need to recommend an integration strategy for the build process of a Java application. The solution must meet the following requirements:
The builds must access an on-premises dependency management system.
The build outputs must be stored as Server artifacts in Azure DevOps.
The source code must be stored in a Git repository in Azure DevOps.
Solution: Install and configure a self-hosted build agent on an on-premises machine. Configure the build pipeline to use the Default agent pool. Include the Java Tool Installer task in the build pipeline.
Does this meet the goal?

1. A. Yes
2. B. No

Correct Answer: B
Instead use Octopus Tentacle. References:
https://explore.emtecinc.com/blog/octopus-for-automated-deployment-in-devops-models

- (Exam Topic 4)
Your development team is building a new web solution by using the Microsoft Visual Studio integrated development environment (IDE).
You need to make a custom package available to all the developers. The package must be managed centrally, and the latest version must be available for consumption in Visual Studio automatically.
Which three actions should you perform? Each correct answer presents part of the solution. NOTE: Each correct selection is worth one point.

1. A. Publish the package to a feed.
2. B. Create a new feed in Azure Artifacts.
3. C. Upload a package to a Git repository.
4. D. Add the package URL to the Environment settings in Visual Studio.
5. E. Add the package URL to the NuGet Package Manager settings in Visual Studio.
6. F. Create a Git repository in Azure Repos.

Correct Answer: ABE
B: By using your custom NuGet package feed within your Azure DevOps (previously VSTS) instance, you’ll be able to distribute your packages within your organization with ease. Start by creating a new feed.
A: We can publish, pack and push the built project to our NuGet feed. E: Consume your private NuGet Feed
Go back to the Packages area in Azure DevOps, select your feed and hit “Connect to feed”. You’ll see some instructions for your feed, but it’s fairly simple to set up.
Just copy your package source URL, go to Visual Studio, open the NuGet Package Manager, go to its settings and add a new source. Choose a fancy name, insert the source URL. Done.
Search for your package in the NuGet Package Manager and it should appear there, ready for installation. Make sure to select the appropriate feed (or just all feeds) from the top right select box.
References:
https://medium.com/medialesson/get-started-with-private-nuget-feeds-in-azure-devops-8c7b5f022a68

- (Exam Topic 4)
During a code review, you discover many quality issues. Many modules contain unused variables and empty catch Modes. You need to recommend a solution to improve the quality o' the code. What should you recommend?

1. A. In a Gradle build task, select Run Checkstyle.
2. B. In an Xcode build task, select Use xcpretty from Advanced
3. C. In a Grunt build task, select Enabled from Control Options.
4. D. In a Maven build task, select Run PMD.

Correct Answer: D
PMD is a source code analyzer. It finds common programming flaws like unused variables, empty catch blocks, unnecessary object creation, and so forth.
There is an Apache Maven PMD Plugin which allows you to automatically run the PMD code analysis tool on your project's source code and generate a site report with its results.
References: https://pmd.github.io/

- (Exam Topic 4)
You need to recommend an integration strategy for the build process of a Java application. The solution must meet the following requirements:
• The builds must access an on-premises dependency management system.
• The build outputs must be stored as Server artifacts in Azure DevOps.
• The source code must be stored in a Git repository in Azure DevOps.
Solution: Configure the build pipeline to use a Microsoft-hosted agent pool running a Linux image. Include the Java Tool Installer task in the build pipeline.
Does this meet the goal?

1. A. Yes
2. B. No

Correct Answer: A
To run your jobs, you'll need at least one agent. A Linux agent can build and deploy different kinds of apps, including Java and Android apps.
If your pipelines are in Azure Pipelines and a Microsoft-hosted agent meets your needs, you can skip setting up a private Linux agent.
The Azure Pipelines agent pool offers several virtual machine images to choose from, each including a broad range of tools and software. We support Ubuntu, Red Hat, and CentOS.
Reference:
https://docs.microsoft.com/en-us/azure/devops/pipelines/agents/v2-linux?view=azure-devops https://docs.microsoft.com/en-us/azure/devops/pipelines/agents/hosted?view=azure-devops&tabs=yaml

- (Exam Topic 4)
You have an Azure subscription. The subscription contains virtual machines that run either Windows Server or Linux.
You plan to use Prometheus to monitor performance metrics. You need to integrate Prometheus and Azure Monitor.
Which two actions should you perform? Each correct answer presents part of the solution. NOTE: Each correct selection is worth one point.

1. A. Install a Prometheus server on a Windows virtual machine in Azure.
2. B. On each virtual machine, expose the metrics endpoint.
3. C. On each virtual machine, enable the Azure Diagnostics extension.
4. D. On each virtual machine, enable the containerized agent for Azure Monitor.
5. E. Expose a virtual network service endpoint for Azure Storage.
6. F. Install a Prometheus server on a Linux virtual machine in Azure.

Correct Answer: AB