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AZ-400 · Question #11

AZ-400 Question #11: Real Exam Question with Answer & Explanation

The correct answer is B: Azure Application Insights. Azure Application Insights is the most suitable service for comprehensive application performance monitoring and telemetry within an Azure environment, especially for migrated applications.

Submitted by chen.hong· Mar 6, 2026Implement an instrumentation strategy

Question

Case Study 3 - Woodgrove Bank Overview General Overview Woodgrove Bank is a financial services company that has a main office in the United Kingdom. Technical Requirements and Planned Changes Planned Changes Woodgrove Bank plans to implement the following project management changes: Implement Azure DevOps for project tracking. Centralize source code control in private GitHub repositories. Implement Azure Pipelines for build pipelines and release pipelines. Woodgrove Bank plans to implement the following changes to the identity environment: Deploy an Azure AD tenant named woodgrovebank.com. Sync the Active Directory domain to Azure AD. Configure App1 to use a service principal. Integrate GitHub with Azure AD. Woodgrove Bank plans to implement the following changes to the core apps: Migrate App1 to ASP.NET Core. Integrate Azure Pipelines and the third-party build tool used to develop App2. Woodgrove Bank plans to implement the following changes to the DevOps environment: Deploy App1 to Azure App Service. Implement source control for the DB1 schema. Migrate all the source code from TFS1 to GitHub. Deploy App2 to an Azure virtual machine named VM1. Merge the POC branch into the GitHub default branch. Implement an Azure DevOps dashboard for stakeholders to monitor development progress. Technical Requirements Woodgrove Bank identifies the following technical requirements: The initial databases for new environments must contain both schema and reference data. An Azure Monitor alert for VM1 must be configured to meet the following requirements: - Be triggered when average CPU usage exceeds 80 percent for 15 minutes. - Calculate CPU usage averages once every minute. The commit history of the POC branch must replace the history of the default branch. The Azure DevOps dashboard must display the metrics shown in the following table. Access to Azure DevOps must be restricted to specific IP addresses. Page load times for App1 must be captured and monitored. Administrative effort must be minimized. You need to meet the technical requirements for monitoring App1. What should you use?

Options

  • ASplunk
  • BAzure Application Insights
  • CAzure Advisor
  • DApp Service logs

Explanation

Azure Application Insights is the most suitable service for comprehensive application performance monitoring and telemetry within an Azure environment, especially for migrated applications.

Common mistakes.

  • A. Splunk is a third-party log management and analytics platform, not an Azure-native APM service designed for immediate integration and deep application insights within Azure's ecosystem.
  • C. Azure Advisor provides personalized recommendations for optimizing Azure resources but does not offer real-time application performance monitoring or collect application telemetry.
  • D. App Service logs collect diagnostic data specifically from Azure App Services, such as web server logs and error logs, but do not provide the comprehensive APM, dependency mapping, and user experience monitoring capabilities of Application Insights.

Concept tested. Azure application performance monitoring and telemetry

Reference. https://learn.microsoft.com/azure/azure-monitor/app/app-insights-overview

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