Microsoft Certified: Azure Developer Associate Certification AZ-204 Practice Test Online

1. Topic 1, Windows Server 2016 virtual machine



Case study

This is a case study. Case studies are not timed separately. You can use as much exam time as you would like to complete each case. However, there may be additional case studies and sections on this exam. You must manage your time to ensure that you are able to complete all questions included on this exam in the time provided.



To answer the questions included in a case study, you will need to reference information that is provided in the case study. Case studies might contain exhibits and other resources that provide more information about the scenario that is described in the case study. Each question is independent of the other questions in this case study.



At the end of this case study, a review screen will appear. This screen allows you to review your answers and to make changes before you move to the next section of the exam. After you begin a new section, you cannot return to this section.



To start the case study

To display the first question in this case study, click the Next button. Use the buttons in the left pane to explore the content of the case study before you answer the questions. Clicking these buttons displays information such as business requirements, existing environment, and problem statements. If the case study has an All Information tab, note that the information displayed is identical to the information displayed on the subsequent tabs. When you are ready to answer a question, click the Question button to return to the question.



Current environment

Windows Server 2016 virtual machine

This virtual machine (VM) runs BizTalk Server 2016. The VM runs the following workflows:

- Ocean Transport C This workflow gathers and validates container information including container contents and arrival notices at various shipping ports.

- Inland Transport C This workflow gathers and validates trucking information including fuel usage, number of stops, and routes.



The VM supports the following REST API calls:

- Container API C This API provides container information including weight, contents, and other attributes.

- Location API C This API provides location information regarding shipping ports of call and trucking stops.

- Shipping REST API C This API provides shipping information for use and display on the shipping website.



Shipping Data

The application uses MongoDB JSON document storage database for all container and transport information.



Shipping Web Site

The site displays shipping container tracking information and container contents. The site is located at http://shipping.wideworldimporters.com/



Proposed solution

The on-premises shipping application must be moved to Azure. The VM has been migrated to a new Standard_D16s_v3 Azure VM by using Azure Site Recovery and must remain running in Azure to complete the BizTalk component migrations. You create a Standard_D16s_v3 Azure VM to host BizTalk Server.

The Azure architecture diagram for the proposed solution is shown below:







Requirements

Shipping Logic app

The Shipping Logic app must meet the following requirements:

- Support the ocean transport and inland transport workflows by using a Logic App.

- Support industry-standard protocol X12 message format for various messages including vessel content details and arrival notices.

- Secure resources to the corporate VNet and use dedicated storage resources with a fixed costing model.

- Maintain on-premises connectivity to support legacy applications and final BizTalk migrations.



Shipping Function app

Implement secure function endpoints by using app-level security and include Azure Active Directory (Azure AD).



REST APIs

The REST API’s that support the solution must meet the following requirements:

- Secure resources to the corporate VNet.

- Allow deployment to a testing location within Azure while not incurring additional costs.

- Automatically scale to double capacity during peak shipping times while not causing application downtime.

- Minimize costs when selecting an Azure payment model.



Shipping data

Data migration from on-premises to Azure must minimize costs and downtime.



Shipping website

Use Azure Content Delivery Network (CDN) and ensure maximum performance for dynamic content while minimizing latency and costs.



Issues

Windows Server 2016 VM

The VM shows high network latency, jitter, and high CPU utilization. The VM is critical and has not been backed up in the past. The VM must enable a quick restore from a 7-day snapshot to include in-place restore of disks in case of failure.



Shipping website and REST APIs

The following error message displays while you are testing the website:

Failed to load http://test-shippingapi.wideworldimporters.com/: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://test.wideworldimporters.com/' is therefore not allowed access.



You need to support the requirements for the Shipping Logic App.

What should you use?

2. DRAG DROP

You need to support the message processing for the ocean transport workflow.

Which four actions should you perform in sequence? To answer, move the appropriate actions from the list of actions to the answer area and arrange them in the correct order.

3. HOTSPOT

You need to resolve the Shipping web site error.

How should you configre the Azure Table Storage service? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

4. You need to migrate on-premises shipping data to Azure.

What should you use?

5. HOTSPOT

You need to update the APIs to resolve the testing error.

How should you complete the Azure CLI command? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

6. HOTSPOT

You need to configure Azure App Service to support the REST API requirements.

Which values should you use? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

7. You need to secure the Shipping Logic App.

What should you use?

8. HOTSPOT

You need to secure the Shipping Function app.

How should you configure the app? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

9. HOTSPOT

You need to configure Azure CDN for the Shipping web site.

Which configuration options should you use? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

10. HOTSPOT

You need to correct the VM issues.

Which tools should you use? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

11. Topic 2, Contoso, Ltd



Case study

This is a case study. Case studies are not timed separately. You can use as much exam time as you would like to complete each case. However, there may be additional case studies and sections on this exam. You must manage your time to ensure that you are able to complete all questions included on this exam in the time provided.



To answer the questions included in a case study, you will need to reference information that is provided in the case study. Case studies might contain exhibits and other resources that provide more information about the scenario that is described in the case study. Each question is independent of the other questions in this case study.



At the end of this case study, a review screen will appear. This screen allows you to review your answers and to make changes before you move to the next section of the exam. After you begin a new section, you cannot return to this section.



To start the case study

To display the first question in this case study, click the Next button. Use the buttons in the left pane to explore the content of the case study before you answer the questions. Clicking these buttons displays information such as business requirements, existing environment, and problem statements. When you are ready to answer a question, click the Question button to return to the question.



Background

Overview

You are a developer for Contoso, Ltd. The company has a social networking website that is developed as a Single Page Application (SPA). The main web application for the social networking website loads user uploaded content from blob storage.

You are developing a solution to monitor uploaded data for inappropriate content.



The following process occurs when users upload content by using the SPA:

• Messages are sent to ContentUploadService.

• Content is processed by ContentAnalysisService.

• After processing is complete, the content is posted to the social network or a rejection message is posted in its place.



The ContentAnalysisService is deployed with Azure Container Instances from a private Azure Container Registry named contosoimages.

The solution will use eight CPU cores.



Azure Active Directory

Contoso, Ltd. uses Azure Active Directory (Azure AD) for both internal and guest accounts.



Requirements

ContentAnalysisService

The company’s data science group built ContentAnalysisService which accepts user generated content as a string and returns a probable value for inappropriate content. Any values over a specific threshold must be reviewed by an employee of Contoso, Ltd.

You must create an Azure Function named CheckUserContent to perform the content checks.



Costs

You must minimize costs for all Azure services.



Manual review

To review content, the user must authenticate to the website portion of the ContentAnalysisService using their Azure AD credentials. The website is built using React and all pages and API endpoints require authentication. In order to review content a user must be part of a ContentReviewer role. All completed reviews must include the reviewer’s email address for auditing purposes.



High availability

All services must run in multiple regions. The failure of any service in a region must not impact overall application availability.



Monitoring

An alert must be raised if the ContentUploadService uses more than 80 percent of available CPU cores.



Security

You have the following security requirements:

- Any web service accessible over the Internet must be protected from cross site scripting attacks.

- All websites and services must use SSL from a valid root certificate authority.

- Azure Storage access keys must only be stored in memory and must be available only to the service.

- All Internal services must only be accessible from internal Virtual Networks (VNets).

- All parts of the system must support inbound and outbound traffic restrictions.

- All service calls must be authenticated by using Azure AD.



User agreements

When a user submits content, they must agree to a user agreement. The agreement allows employees of Contoso, Ltd. to review content, store cookies on user devices, and track user’s IP addresses.

Information regarding agreements is used by multiple divisions within Contoso, Ltd.

User responses must not be lost and must be available to all parties regardless of individual service uptime. The volume of agreements is expected to be in the millions per hour.



Validation testing

When a new version of the ContentAnalysisService is available the previous seven days of content must be processed with the new version to verify that the new version does not significantly deviate from the old version.



Issues

Users of the ContentUploadService report that they occasionally see HTTP 502 responses on specific pages.



Code

ContentUploadService











HOTSPOT

You need to implement the bindings for the CheckUserContent function.

How should you complete the code segment? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

12. HOTSPOT

You need to add code at line AM09 to ensure that users can review content using ContentAnalysisService.

How should you complete the code? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

13. HOTSPOT

You need to ensure that validation testing is triggered per the requirements.

How should you complete the code segment? To answer, select the appropriate values in the answer area. NOTE: Each correct selection is worth one point.

14. HOTSPOT

You need to ensure that network security policies are met.

How should you configure network security? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

15. You need to configure the ContentUploadService deployment.

Which two actions should you perform? Each correct answer presents part of the solution. NOTE: Each correct selection is worth one point.

16. You need to store the user agreements.

Where should you store the agreement after it is completed?

17. DRAG DROP

You need to add markup at line AM04 to implement the ContentReview role.

How should you complete the markup? To answer, drag the appropriate json segments to the correct locations. Each json segment may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content. NOTE: Each correct selection is worth one point.

18. DRAG DROP

You need to add YAML markup at line CS17 to ensure that the ContentUploadService can access Azure Storage access keys.

How should you complete the YAML markup? To answer, drag the appropriate YAML segments to the correct locations. Each YAML segment may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content. NOTE: Each correct selection is worth one point.

19. HOTSPOT

You need to add code at line AM10 of the application manifest to ensure that the requirement for manually reviewing content can be met.

How should you complete the code? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

20. You need to investigate the http server log output to resolve the issue with the ContentUploadService.

Which command should you use first?

21. You need to monitor ContentUploadService accourding to the requirements.

Which command should you use?

22. Topic 3, City Power & Light



Case study

This is a case study. Case studies are not timed separately. You can use as much exam time as you would like to complete each case. However, there may be additional case studies and sections on this exam. You must manage your time to ensure that you are able to complete all questions included on this exam in the time provided.



To answer the questions included in a case study, you will need to reference information that is provided in the case study. Case studies might contain exhibits and other resources that provide more information about the scenario that is described in the case study. Each question is independent of the other questions in this case study.

At the end of this case study, a review screen will appear. This screen allows you to review your answers and to make changes before you move to the next section of the exam. After you begin a new section, you cannot return to this section.



To start the case study

To display the first question in this case study, click the Next button. Use the buttons in the left pane to explore the content of the case study before you answer the questions. Clicking these buttons displays information such as business requirements, existing environment, and problem statements. When you are ready to answer a question, click the Question button to return to the question.



Background

City Power & Light company provides electrical infrastructure monitoring solutions for homes and businesses. The company is migrating solutions to Azure.



Current environment

Architecture overview

The company has a public website located at http://www.cpandl.com/. The site is a single-page web application that runs in Azure App Service on Linux. The website uses files stored in Azure Storage and cached in Azure Content Delivery Network (CDN) to serve static content.



API Management and Azure Function App functions are used to process and store data in Azure Database for PostgreSQL. API Management is used to broker communications to the Azure Function app functions for Logic app integration. Logic apps are used to orchestrate the data processing while Service Bus and Event Grid handle messaging and events.



The solution uses Application Insights, Azure Monitor, and Azure Key Vault.



Architecture diagram

The company has several applications and services that support their business. The company plans to implement serverless computing where possible.

The overall architecture is shown below.







User authentication

The following steps detail the user authentication process:

✑ The user selects Sign in in the website.

✑ The browser redirects the user to the Azure Active Directory (Azure AD) sign in page.

✑ The user signs in.

✑ Azure AD redirects the user’s session back to the web application. The URL includes an access token.

✑ The web application calls an API and includes the access token in the authentication header. The application ID is sent as the audience (‘aud’) claim in the access token.

✑ The back-end API validates the access token.



Requirements

Corporate website

✑ Communications and content must be secured by using SSL.

✑ Communications must use HTTPS.

✑ Data must be replicated to a secondary region and three availability zones.

✑ Data storage costs must be minimized.



Azure Database for PostgreSQL

The database connection string is stored in Azure Key Vault with the following attributes:

✑ Azure Key Vault name: cpandlkeyvault

✑ Secret name: PostgreSQLConn

✑ Id: 80df3e46ffcd4f1cb187f79905e9a1e8



The connection information is updated frequently. The application must always use the latest information to connect to the database.



Azure Service Bus and Azure Event Grid

✑ Azure Event Grid must use Azure Service Bus for queue-based load leveling.

✑ Events in Azure Event Grid must be routed directly to Service Bus queues for use in buffering.

✑ Events from Azure Service Bus and other Azure services must continue to be routed to Azure Event Grid for processing.



Security

✑ All SSL certificates and credentials must be stored in Azure Key Vault.

✑ File access must restrict access by IP, protocol, and Azure AD rights.

✑ All user accounts and processes must receive only those privileges which are essential to perform their intended function.



Compliance

Auditing of the file updates and transfers must be enabled to comply with General Data Protection Regulation (GDPR). The file updates must be read-only, stored in the order in which they occurred, include only create, update, delete, and copy operations, and be retained for compliance reasons.



Issues

Corporate website

While testing the site, the following error message displays:

CryptographicException: The system cannot find the file specified.



Function app

You perform local testing for the RequestUserApproval function. The following error

message displays:

'Timeout value of 00:10:00 exceeded by function: RequestUserApproval'



The same error message displays when you test the function in an Azure development environment when you run the following Kusto query: FunctionAppLogs

| where FunctionName = = "RequestUserApproval"



Logic app

You test the Logic app in a development environment. The following error message displays:

'400 Bad Request'

Troubleshooting of the error shows an HttpTrigger action to call the RequestUserApproval function.



Code

Corporate website

Security.cs:







Function app

RequestUserApproval.cs:







HOTSPOT

You need to correct the Azure Logic app error message.

Which configuration values should you use? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

23. You need to correct the RequestUserApproval Function app error.

What should you do?

24. HOTSPOT

You need to retrieve the database connection string.

Which values should you use? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

25. HOTSPOT

You need to configure security and compliance for the corporate website files.

Which Azure Blob storage settings should you use? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

26. HOTSPOT

You need to configure the integration for Azure Service Bus and Azure Event Grid.

How should you complete the CLI statement? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

27. HOTSPOT

You need to configure API Management for authentication.

Which policy values should you use? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

28. HOTSPOT

You need to configure the Account Kind, Replication, and Storage tier options for the corporate website’s Azure Storage account.

How should you complete the configuration? To answer, select the appropriate options in the dialog box in the answer area. NOTE: Each correct selection is worth one point.

29. You need to authenticate the user to the corporate website as indicated by the architectural diagram.

Which two values should you use? Each correct answer presents part of the solution. NOTE: Each correct selection is worth one point.

30. DRAG DROP

You need to correct the corporate website error.

Which four actions should you recommend be performed in sequence? To answer, move the appropriate actions from the list of actions to the answer area and arrange them in the correct order.

31. You need to investigate the Azure Function app error message in the development environment.

What should you do?

32. HOTSPOT

You need to configure Azure Service Bus to Event Grid integration.

Which Azure Service Bus settings should you use? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

33. You need to ensure that all messages from Azure Event Grid are processed.

What should you use?

34. Topic 4, Proseware, Inc



Case study

This is a case study. Case studies are not timed separately. You can use as much exam time as you would like to complete each case. However, there may be additional case studies and sections on this exam. You must manage your time to ensure that you are able to complete all questions included on this exam in the time provided.



To answer the questions included in a case study, you will need to reference information that is provided in the case study. Case studies might contain exhibits and other resources that provide more information about the scenario that is described in the case study. Each question is independent of the other questions in this case study.



At the end of this case study, a review screen will appear. This screen allows you to review your answers and to make changes before you move to the next section of the exam. After you begin a new section, you cannot return to this section.



To start the case study

To display the first question in this case study, click the Next button. Use the buttons in the left pane to explore the content of the case study before you answer the questions. Clicking these buttons displays information such as business requirements, existing environment, and problem statements. When you are ready to answer a question, click the Question button to return to the question.



Background

You are a developer for Proseware, Inc. You are developing an application that applies a set of governance policies for Proseware’s internal services, external services, and applications. The application will also provide a shared library for common functionality.



Requirements

Policy service

You develop and deploy a stateful ASP.NET Core 2.1 web application named Policy service to an Azure App Service Web App. The application reacts to events from Azure Event Grid and performs policy actions based on those events.

The application must include the Event Grid Event ID field in all Application Insights telemetry.

Policy service must use Application Insights to automatically scale with the number of policy actions that it is performing.



Policies

Log policy

All Azure App Service Web Apps must write logs to Azure Blob storage. All log files should be saved to a container named logdrop. Logs must remain in the container for 15 days.



Authentication events

Authentication events are used to monitor users signing in and signing out. All authentication events must be processed by Policy service. Sign outs must be processed as quickly as possible.



PolicyLib

You have a shared library named PolicyLib that contains functionality common to all ASP.NET Core web services and applications.

The PolicyLib library must:

✑ Exclude non-user actions from Application Insights telemetry.

✑ Provide methods that allow a web service to scale itself.

✑ Ensure that scaling actions do not disrupt application usage.



Other

Anomaly detection service

You have an anomaly detection service that analyzes log information for anomalies. It is implemented as an Azure Machine Learning model. The model is deployed as a web service. If an anomaly is detected, an Azure Function that emails administrators is called by using an HTTP WebHook.



Health monitoring

All web applications and services have health monitoring at the /health service endpoint.



Issues

Policy loss

When you deploy Policy service, policies may not be applied if they were in the process of being applied during the deployment.



Performance issue

When under heavy load, the anomaly detection service undergoes slowdowns and rejects connections.



Notification latency

Users report that anomaly detection emails can sometimes arrive several minutes after an anomaly is detected.



App code

EventGridController.cs

Relevant portions of the app files are shown below. Line numbers are included for reference only and include a two-character prefix that denotes the specific file to which they belong.











LoginEvent.cs

Relevant portions of the app files are shown below. Line numbers are included for reference only and include a two-character prefix that denotes the specific file to which they belong.







DRAG DROP

You need to implement telemetry for non-user actions.

How should you complete the Filter class? To answer, drag the appropriate code segments to the correct locations. Each code segment may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content. NOTE: Each correct selection is worth one point.

35. DRAG DROP

You need to implement the Log policy.

How should you complete the Azure Event Grid subscription? To answer, drag the appropriate JSON segments to the correct locations. Each JSON segment may be used once, more than once, or not at all. You may need to drag the split bar between panes to view content. NOTE: Each correct selection is worth one point.

36. You need to resolve a notification latency issue.

Which two actions should you perform? Each correct answer presents part of the solution. NOTE: Each correct selection is worth one point.

37. You need to ensure that the solution can meet the scaling requirements for Policy Service.

Which Azure Application Insights data model should you use?

38. HOTSPOT

You need to insert code at line LE03 of LoginEvent.cs to ensure that all authentication events are processed correctly.

How should you complete the code? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

39. DRAG DROP

You need to ensure that PolicyLib requirements are met.

How should you complete the code segment? To answer, drag the appropriate code segments to the correct locations. Each code segment may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content. NOTE: Each correct selection is worth one point.