Microsoft Microsoft Certifications AZ-400 Questions & Answers

• Question 281:

  You have an Azure web app named webapp1 that uses the .NET Core runtime stack. You have an Azure Application Insights resource named AppInsights1. Webapp1 sends telemetry data to AppInsights1.

  You need to ensure that webapp1 sends the telemetry data at a fixed sampling rate.

  What should you do?

  A. From the code repository of webapp1, modify the ApplicationInsights.config file.

  B. From the code repository of webapp1, modify the Startup.cs file.

  C. From AppInsights1, modify the Usage and estimated costs settings.

  D. From AppInsights1, configure the Continuous export settings.

  Correct Answer: B

  Explanation:

  Configure the Application Insights SDK

  You can customize the Application Insights SDK for ASP.NET Core to change the default configuration. Users of the Application Insights ASP.NET SDK might be familiar with changing configuration by using ApplicationInsights.config or by

  modifying TelemetryConfiguration.Active. For ASP.NET Core, make almost all configuration changes in the ConfigureServices() method of your Startup.cs class, unless you're directed otherwise (see line marked with **This line! below).

  Example: Configuring fixed-rate sampling for ASP.NET Core applications.

  Changes can be made after the WebApplication.CreateBuilder() method:

  C#

  var builder = WebApplication.CreateBuilder(args);

  builder.Services.Configure(telemetryConfiguration => // **This line! { var builder = telemetryConfiguration.DefaultTelemetrySink.TelemetryProcessorChainBuilder;

  // Using fixed rate sampling

  double fixedSamplingPercentage = 10;

  builder.UseSampling(fixedSamplingPercentage);

  });

  builder.Services.AddApplicationInsightsTelemetry(new ApplicationInsightsServiceOptions { EnableAdaptiveSampling = false, });

  var app = builder.Build();

  Reference: https://learn.microsoft.com/en-us/azure/azure-monitor/app/sampling https://learn.microsoft.com/en-us/azure/azure-monitor/app/asp-net-core

• Question 282:

  Your company has multiple microservices-based apps that use the following tracing libraries: OpenTelemetry OpenCensus OpenTracing

  Honeycomb

  Jaeger

  The company purchases an Azure subscription and implements Application Insights in Azure Monitor.

  You plan to centralize distributed tracing for the apps.

  You need to identify which libraries can integrate directly with Application Insights.

  Which two libraries should you identify? Each correct answer presents a complete solution.

  NOTE: Each correct solution is worth one point.

  A. Honeycomb

  B. OpenTracing

  C. Jaeger

  D. OpenTelemtry

  E. OpenCensus

  Correct Answer: DE

  Explanation:

  You can use OpenTelemetry Collector to collect traces to send to AppInsights. Run OpenTelemetry Collector to push to your Application Insights instance

  Track incoming requests with OpenCensus Python

  Incoming request data is collected using OpenCensus Python and its various integrations. Track incoming request data sent to your web applications built on top of the popular web frameworks django, flask and pyramid. The data is then sent

  to Application Insights under Azure Monitor as requests telemetry.

  Reference:

  https://docs.dapr.io/operations/monitoring/tracing/otel-collector/open-telemetry-collector-appinsights/

  https://learn.microsoft.com/en-us/azure/azure-monitor/app/opencensus-python-request

• Question 283:

  You are evaluating the use of code review assignments in GitHub.

  Which two requirements can be met by using code review assignments?

  Each correct answer presents a complete solution. NOTE: Each correct selection is worth one point

  A. Automatically choose and assign reviewers based on a list of available personnel

  B. Automatically choose and assign reviewers based on who has the most completed review requests.

  C. Ensure that each team member reviews an equal number of pull requests during any 30-day period.

  D. Automatically choose and assign reviewers based on who received the least recent review requests.

  Correct Answer: AC

• Question 284:

  You use GitHub for source control and project-related discussions.

  You receive a notification when an entry is made to any team discussion.

  You need to ensure that you receive email notifications only for discussions in which you commented or in which you are mentioned.

  Which two Notifications settings should you clear? Each correct answer presents part of the solution.

  NOTE: Each correct selection is worth one point.

  A. Participating

  B. Automatically watch repositories

  C. Automatically watch teams

  D. Watching

  Correct Answer: BC

• Question 285:

  You build an iOS app.

  You receive crash reports from Crashlytics.

  You need to capture the following data:

  Crash-free users

  Custom events

  Breadcrumbs

  What should you do?

  A. Configure the xcworkspace file in the project

  B. Add the GoogleAnalytics pod to the app.

  C. Configure the Crashlytics pod in the app.

  D. Import the Firebase module to UIApplicationDelegate.

  Correct Answer: D

  Explanation:

  Step 1: Add the Firebase Crashlytics SDK to your app.

  Configure the Firebase module:

  Import the Firebase module in your App struct or UIApplicationDelegate

  Reference: https://firebase.google.com/docs/crashlytics/get-started?platform=ios

• Question 286:

  You have multiple teams that work on multiple projects in Azure DevOps.

  You need to plan and manage the consumers and producers for each project. The solution must provide an overview of all the projects.

  What should you do?

  A. Add a Predecessor or Successor link to the feature or user story for the items of each project.

  B. Add a Parent or Child link to the feature or user story for the items of each project.

  C. Install the Dependency Tracker extension and create dependencies for each project.

  D. Create a custom query to show the consumers and producers and add a widget to a dashboard.

  Correct Answer: C

  Explanation:

  The Dependency Tracker extension enables management of dependencies across teams, projects, and organizations. It provides filterable views to show all dependencies a team is consuming and producing. These views allow you to track

  the state and schedule of dependencies to support you in assessing the risk of dependencies to product deliverables.

  You use the Dependency Tracker to plan dependencies at the beginning of an iteration or release, and to track the status during development. For any given dependency, there are two parties involved:

  Consumer: Feature team who has a need and starts a request for work

  Producer: Feature team who makes a commitment to deliver work

  Reference:

  https://docs.microsoft.com/en-us/azure/devops/boards/extensions/dependency-tracker?view=azure-devops

• Question 287:

  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:

  1.

  The build must access an on-premises dependency management system.

  2.

  The build outputs must be stored as Server artifacts in Azure DevOps.

  3.

  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?

  A. Yes

  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-devopsandtabs=yaml

• Question 288:

  You have an Azure virtual machine that is monitored by using Azure Monitor.

  The virtual machine has the Azure Log Analytics agent installed.

  You plan to deploy the Service Map solution from Azure Marketplace.

  What should you deploy to the virtual machine to support the Service Map solution?

  A. the Telegraf agent

  B. the Azure Monitor agent

  C. the Dependency agent

  D. the Windows Azure diagnostics extension (WAD)

  Correct Answer: C

• Question 289:

  You have an Azure solution that contains a build pipeline in Azure Pipelines.

  You experience intermittent delays before the build pipeline starts.

  You need to reduce the time it takes to start the build pipeline.

  What should you do?

  A. Enable self-hosted build agents.

  B. Create a new agent pool.

  C. Split the build pipeline into multiple stages.

  D. Purchase an additional parallel job.

  Correct Answer: D

  We need to ensure that resources are available without a startup delay. We don't have enough concurrency.

  To check how much concurrency you have:

  To check your limits, navigate to Project settings, Parallel jobs.

  

• Question 290:

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

  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:

  1.

  The build must access an on-premises dependency management system.

  2.

  The build outputs must be stored as Server artifacts in Azure DevOps.

  3.

  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 the Windows Server 2019 with Visual Studio 2019 image. Include the Java Tool Installer task in the build pipeline.

  Does this meet the goal?

  A. Yes

  B. No

  Correct Answer: B

  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-devopsandtabs=yaml