See the solution below in explanation.
Explanation:
Step 1: Initialize the Default Main Branch
Navigate to Azure DevOps:
Go to Azure DevOps and sign in with your credentials.
Select Your Project:
Choose Project1 from your list of projects.
Initialize theMain Branch:
Go to Repos > Files.
If the main branch does not exist, you will see an option to initialize it. Click on Initialize and follow the prompts to create the main branch1.
Step 2: Create a New Branch for the Pipeline
Navigate to Branches:
Go to Repos > Branches.
Click on New branch.
Create the Branch:
Enter azure-pipelines as the branch name.
Select main as the base branch.
Click Create2.
Step 3: Create a New Azure Pipelines YAML Pipeline
Navigate to Pipelines:
Go to Pipelines > New pipeline.
Select the Repository:
Choose Azure Repos Git and select the relevant repository.
Configure the Pipeline:
Select Starter pipeline.
Replace the default YAML with the ASP.NET template. You can find the ASP.NET template in the Azure Pipelines documentation oruse the following example:
trigger:
- main
pool:
vmImage: ' windows-latest '
variables:
buildConfiguration: ' Release '
steps:
- task: UseDotNet@2
inputs:
packageType: ' sdk '
version: ' 5.x '
installationPath: $(Agent.ToolsDirectory)/dotnet
- script: |
dotnet build --configuration $(buildConfiguration)
displayName: ' Build project '
- script: |
dotnet test --no-build --configuration $(buildConfiguration)
displayName: ' Run tests '
Save the Pipeline:
Click on Save and enter azure-pipelines as the branch name.
Click on Save and run to save the pipeline to the new branch named azure-pipelines3.
By following these steps, you will have successfully initialized the main branch, created a new branch named azure-pipelines, and set up a new Azure Pipelines YAML pipeline using the ASP.NET template

Explanation:

Step 1: Create a repository
A Git repository, or repo, is a folder that you ' ve told Git to help you track file changes in. You can have any number of repos on your computer, each stored in their own folder.
Step 2: Create a branch
Branch policies help teams protect their important branches of development. Policies enforce your team ' s code quality and change management standards.
Step 3: Add a build validation policy
When a build validation policy is enabled, a new build is queued when a new pull request is created or when changes are pushed to an existing pull request targeting this branch. The build policy then evaluates the results of the build to determine whether the pull request can be completed.
Scenario:
Implement a code flow strategy for Project2 that will:
Enable Team2 to submit pull requests for Project2.
Enable Team2 to work independently on changes to a copy of Project2.
Ensure that any intermediary changes performed by Team2 on a copy of Project2 will be subject to the same restrictions as the ones defined in the build policy of Project2.

References: https://docs.microsoft.com/en-us/azure/devops/repos/git/man age-your-branch es

Explanation:

Box 1: RBAC
Management plane access control uses RBAC.
The management plane consists of operations that affect the key vault itself, such as:
* Creating or deleting a key vault.
* Getting a list of vaults in a subscription.
* Retrieving Key Vault properties (such as SKU and tags).
* Setting Key Vault access policies that control user and application access to keys and secrets.
Box 2: RBAC
References:
https:// docs.microso ft.com/en-us/az ure /azure-resource-m anager/resource-manager-tutorial-use-key-va ult

To build and deploy Windows, Azure, and other Visual Studio solutions you'll needat least one Windows agent. Windows agents can also build Java and Android apps.
The Azure Pipelines agent pool offers several virtual machine images to choose from, each including a broad range of tools and software. One such image is Windows Server 2019with Visual Studio 2019.
Reference:
https://docs.microsoft.com/en-us/azure/devops/pipelines/agents/v2-windows?view=azure-devops
https://docs.microsoft.com/en-us/azure/devops/pipelines/agents/hosted?view=azure-devops&tabs=yaml