Microsoft Microsoft Certifications AZ-400 Questions & Answers

• Question 351:

  You create an alert rule in Azure Monitor as shown in the following exhibit.

  

  Which action will trigger an alert?

  A. a failed attempt to delete the ASP-9bb7 resource

  B. a change to a role assignment for the ASP-9bb7 resource

  C. a successful attempt to delete the ASP-9bb7 resource

  D. a failed attempt to scale up the ASP-9bb7 resource

  Correct Answer: A

• Question 352:

  You have a containerized solution that runs in Azure Container Instances. The solution contains a frontend container named App1 and a backend container named DB1. DB1 loads a large amount of data during startup.

  You need to verify that DB1 can handle incoming requests before users can submit requests to Appl.

  What should you configure?

  A. a Iiveness probe

  B. an Azure Load Balancer health probe

  C. a readiness probe

  D. a performance log

  Correct Answer: C

  For containerized applications that serve traffic, you might want to verify that your container is ready to handle incoming requests. Azure Container Instances supports readiness probes to include configurations so that your container can't be accessed under certain conditions.

  Reference: https://docs.microsoft.com/en-us/azure/container-instances/container-instances-readiness-probe

• Question 353:

  You have an Azure DevOps organization named Contoso and art Azure subscription The subscription contains an Azure virtual machine scale set named VMSS1 that is configured for autoscaling.

  You use Azure DevOps to build a web app named Appl and deploy Appl to VMSS1. Appl is used heavily and has usage patterns that vary on a weekly basis.

  You need to recommend a solution to detect an abnormal rise in the rate of failed requests to Appl.

  The solution must minimize administrative effort.

  What should you include in the recommendation?

  A. an Azure Service Health alert

  B. the Failures feature in Azure Application Insights

  C. the Smart Detection feature m Azure Application Insights

  D. an Azure Monitor alert that uses an Azure Log Analytics query

  Correct Answer: C

  After setting up Application Insights for your project, and if your app generates a certain minimum amount of data, Smart Detection of failure anomalies takes 24 hours to learn the normal behavior of your app, before it is switched on and can send alerts.

  Reference: https://docs.microsoft.com/en-us/azure/azure-monitor/app/proactive-failure-diagnostics

• Question 354:

  You plan to create a project in Azure DevOps. Multiple developers will work on the project. The developers will work offline frequently and will require access to the full project history while they are offline. Which version control solution should you use?

  A. TortotseSVN

  B. Team Foundation Version Control

  C. Subversion

  D. Git

  Correct Answer: D

  Git history: File history is replicated on the client dev machine and can be viewed even when not connected to the server. You can view history in Visual Studio and on the web portal. Note: Azure Repos supports two types of version control: Git and Team Foundation Version Control (TFVC).

  Reference: https://docs.microsoft.com/en-us/azure/devops/repos/tfvc/comparison-git-tfvc

• Question 355:

  You have an existing project in Azure DevOps.

  You plan to integrate GitHub as the repository for the project You need to ensure that Azure Pipelines runs under the Azure Pipelines identity Which authentication mechanism should you use?

  A. GitHubApp

  B. OAuth

  C. personal access token (PAT)

  D. Azure Active Directory (Azure AD)

  Correct Answer: A

  GitHub App uses the Azure Pipelines identity.

  Reference: https://docs.microsoft.com/en-us/azure/devops/pipelines/repos/github

• Question 356:

  You have a multi-tier application. The front end of the application is hosted in Azure App Service. You need to identify the average load times of the application pages. What should you use?

  A. the diagnostics logs of the App Service

  B. Azure Application Insights

  C. Azure Advisor

  D. the activity log of the App Service

  Correct Answer: B

• Question 357:

  You plan to provision a self-hosted Linux agent

  Which authentication mechanism should you use to register the self-hosted agent?

  A. SSH key

  B. personal access token (PAT)

  C. Alternate credentials

  D. certificate

  Correct Answer: B

  Note: PAT Supported only on Azure Pipelines and TFS 2017 and newer. After you choose PAT, paste the PAT token you created into the command prompt window. Use a personal access token (PAT) if your Azure DevOps Server or TFS instance and the agent machine are not in a trusted domain. PAT authentication is handled by your Azure DevOps Server or TFS instance instead of the domain controller.

  Reference: https://docs.microsoft.com/en-us/azure/devops/pipelines/agents/v2-linux

• Question 358:

  You have a web app hosted on Azure App Service. The web app stores data in an Azure SQL database. You need to generate an alert when there are 10,000 simultaneous connections to the database. The solution must minimize deve4opment effort.

  Which option should you select in the Diagnostics settings of the database?

  A. Send to Log Analytics

  B. Archive to m storage account

  C. Stream to an event hub

  Correct Answer: A

  ENABLE DIAGNOSTICS TO LOG ANALYTICS This configuration is done PER DATABASE

  1. Click on Diagnostics Settings and then Turn On Diagnostics

  

  2. Select to Send to Log Analytics and select the Log Analytics workspace. For this sample I will selected only Errors

  

  Reference: https://techcommunity.microsoft.com/t5/azure-database-support-blog/azure-sql-db-and-log-analytics-better-together-part-1/ba-p/794833

• Question 359:

  You have a build pipeline in Azure Pipelines that uses different jobs to compile an application for 10 different architectures.

  The build pipeline takes approximately one day to complete.

  You need to reduce the time it takes to execute the build pipeline

  Which two actions should you perform? Each correct answer presents part of the solution.

  NOTE: Each correct selection is worth one point

  A. Move to a blue/green deployment pattern.

  B. Create an agent pool.

  C. Create a deployment group.

  D. Reduce the size of the repository.

  E. Increase the number of parallel jobs.

  Correct Answer: BE

• Question 360:

  You are building a Microsoft ASP.NET application that requires authentication. You need to authenticate users by using Azure Active Directory (Azure AD). What should you do first?

  A. Create a membership database in an Azure SQL database.

  B. Assign an enterprise application to users and groups.

  C. Create an app registration in Azure AD.

  D. Configure the application to use a SAML endpoint.

  E. Create a new OAuth token from the application.

  Correct Answer: C

  Register your application to use Azure Active Directory. Registering the application means that your developers can use Azure AD to authenticate users and request access to user resources such as email, calendar, and documents.

  Reference: https://docs.microsoft.com/en-us/azure/active-directory/manage-apps/developer-guidance-for-integrating-applications