Free Practice Questions for Microsoft AZ-400 Exam

To ensure that your Azure Web App namedaz400-38443478-maincan retrieve secrets from an Azure Key Vault namedaz400-3844J478-kv1using a system managed identity with the principle of least privilege, follow these detailed steps:

Enable a System Managed Identity for the Azure Web App:

Navigate to the Azure Portal.

Go to the Azure Web Appaz400-38443478-main.

SelectIdentityunder theSettingssection.

In theSystem assignedtab, switch theStatustoOn.

ClickSaveto apply the changes.

Grant the Web App Access to the Key Vault:

Go to the Azure Key Vaultaz400-3844J478-kv1.

SelectAccess policiesunder theSettingssection.

Click onAdd Access Policy.

ChooseSecret permissionsand selectGetandList. This grants the app the ability to read secrets, adhering to the principle of least privilege.

Click onSelect principal, search for your Web App nameaz400-38443478-main, and select it.

ClickAddto add the policy.

Don’t forget to clickSaveto save the access policy changes.

Retrieve Secrets in the Web App Code:

In your Web App’s code, use the Azure SDK to retrieve the secrets.

For example, in a .NET application,you can use theAzure.IdentityandAzure.Security.KeyVault.Secretsnamespaces.

Utilize theDefaultAzureCredentialclass which will automatically use the system managed identity when running on Azure.

using Azure.Identity;

usingAzure.Security.KeyVault.Secrets;

var client = new SecretClient(new Uri( " https://az400-3844J478-kv1.vault.azure.net/ " ), new DefaultAzureCredential());

KeyVaultSecret secret = await client.GetSecretAsync( " my-secret-name " );

string secretValue =secret.Value;

Replace " my-secret-name " with the actual name of the secret you want to retrieve.

By following these steps, your Azure Web App will be able to securely retrieve secrets from the Azure Key Vault using a system managed identity, without needingto store credentials in the code, and adhering to the principle of least privilege. Remember to replace the placeholder names with the actual names of your Web App and Key Vault.

To store signed images in an Azure Container Registry (ACR) instance and support your planned images while minimizing costs, you need to modify the SKU of your ACR instance to one that supports content trust and image signing. Here’s how you can do it:

Determine the Appropriate SKU:

Content trust and image signing are features of thePremiumservice tier of Azure ContainerRegistry1.

If cost minimization is a priority, ensure that the Premium tier is necessary for your use case. If you require content trust, the Premium tier is the appropriate choice.

Modify the SKU of the ACR Instance:

Navigate to the Azure Portal.

Go to your ACR instanceaz40038443478act1.

SelectUpdatefrom the overview pane.

Choose thePremiumSKU from the SKU drop-down menu2.

Review the changes and pricing, then save the configuration.

By upgrading to the Premium SKU, you’ll be able to store signed images in your ACR instance. Remember to monitor your usage and costs to ensure they align with your budget and requirements.

Step 1: Understand the Requirements

You need to create a self-hosted agent for Azure Pipelines.

It will be hosted in a pod (for example, in Kubernetes).

All pipelines in Project1 should be able to use this agent pool named Pool1 .

Step 2: Create the Agent Pool in Azure DevOps

Go to your Azure DevOps organization : https://dev.azure.com/{YourOrganizationName}

In the bottom-left corner, click on the Organization settings gear icon.

In the left menu, click on Agent pools .

Click on Add pool .

Provide the following:

Pool name: Pool1

Pool type: Self-hosted

Grant access permission to all pipelines: Checked (so that all Project1 pipelines can use this pool)

Click Create .

Now you have an empty agent pool named Pool1 .

Step 3: Prepare the Self-hosted Agent as a Pod

You need to deploy an Azure Pipelines agent container as a pod . Here’s how to do it:

Option 1: Using Kubernetes directly (YAML deployment)

Create a Kubernetes deployment YAML file for the agent pod:

apiVersion: apps/v1

kind: Deployment

metadata:

name: azure-pipelines-agent

labels:

app: azure-pipelines-agent

spec:

replicas: 1

selector:

matchLabels:

app: azure-pipelines-agent

template:

metadata:

labels:

app: azure-pipelines-agent

spec:

containers:

- name: agent

image: mcr.microsoft.com/azure-pipelines/vsts-agent:latest

env:

- name: AZP_URL

value: " https://dev.azure.com/{YourOrganizationName} "

- name: AZP_TOKEN

valueFrom:

secretKeyRef:

name: azure-pipelines-token

key: token

- name: AZP_POOL

value: " Pool1 "

- name: AZP_AGENT_NAME

value: " agent-pod "

Create a Kubernetes secret for the personal access token (PAT) :

kubectl create secret generic azure-pipelines-token --from-literal=token= < your-PAT >

Note:

Replace < your-PAT > with a PAT that has “Agent Pools (Read & manage)” scope.

Replace {YourOrganizationName} with your actual Azure DevOps organization.

Deploy the pod:

bash

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kubectl apply -f azure-pipelines-agent.yaml

Step 4: Validate the Agent Connection

Go back to Organization Settings > Agent pools > Pool1 in Azure DevOps.

You should see the agent pod connected and listed as online .

Step 5: Use the Pool in Pipelines

By default, all pipelines in Project1 will now have access to the Pool1 agent pool because you granted access during the pool creation.

In your pipeline YAML files, specify the pool name to use the self-hosted agent:

yaml

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pool:

name: Pool1

Graphical user interface, text, application, email Description automatically generated

Secure and Manage Open Source Software

Black Duck helps organizations identify and mitigate open source security, license compliance and code-quality risks across application and container portfolios.

Black Duck Hub and its plugin for Team Foundation Server (TFS) allows you to automatically find and fix open source security vulnerabilities during the build process, so you can proactively manage risk. The integration allows you to receive alerts and fail builds when any Black Duck Hub policy violations are met.

Note: WhiteSource would also be a good answer, but it is not an option here.

Sign in to the Azure portal.

Navigate to the container registry az40010480345acr1.

Under Services, select Webhooks.

Select the existing webhook https://contoso.com/statushook, and double-click on it to get its properties.

For Trigger actions select image push

Example web hook:

Box 1: A deployment group

When authoring an Azure Pipelines or TFS Release pipeline, you can specify the deployment targets for a job using a deployment group.

If the target machines are Azure VMs, you can quickly and easily prepare them by installing the Azure Pipelines Agent Azure VM extension on each of the VMs, or by using the Azure Resource Group Deployment task in your release pipeline to create a deployment group dynamically.

Box 2: A deployment group