Microsoft Dynamics 365: Finance and Operations Apps Developer (MB-500) practice questions

Domain coverage 7 domains

• Plan the architecture and solution design (5–10%)
• Apply developer tools (5–10%)
• Design and develop AOT elements (15–20%)
• Develop and test code (20–25%)
• Implement reporting (10–15%)
• Integrate and manage data solutions (15–20%)
• Implement security and optimize performance (10–15%)

Sample questions 12 of 115 shown

1. Q1 Plan Architecture and Solution Design (5-10%)

   You are designing an integration with an external PLM (Product Lifecycle Management) system. The PLM system must be the master for product engineering data. When a product is approved in the PLM, it should trigger a process in Dynamics 365 to create the corresponding released product and bill of materials (BOM). The integration must be near real-time and resilient to transient network failures. Which integration pattern provides the most appropriate solution?

   1. A recurring data job exporting a change-tracked product entity from F&O, polled by the PLM system.
   2. Exposing a custom OData action on a released product entity, to be called directly by the PLM system upon approval.
   3. Implementing a custom service in F&O that is polled every minute by a middleware service connected to the PLM.
   4. Having the PLM system send a message to an Azure Service Bus queue. An Azure Function or Logic App subscribes to the queue and calls a custom service or OData endpoint in F&O to create the product.

   This pattern uses Azure Service Bus for reliable message delivery, ensuring resilience against transient network failures. The Azure Function or Logic App processes the message and calls the Dynamics 365 service through OData or custom service endpoints, providing near real-time processing with built-in retry and dead-letter capabilities.
2. Q2 Plan Architecture and Solution Design (5-10%)

   A development team is establishing a branching strategy in Azure DevOps to manage development, testing, and release cycles. The strategy must support parallel development of multiple features, a stable environment for UAT, and hotfixes for production. Which branching strategy should be implemented?

   1. A single 'main' branch where all developers commit their changes directly.
   2. A 'main' branch for production, and individual developer branches merged directly into 'main' after testing.
   3. A 'main' branch for production-ready code, a 'develop' branch for integrating features, and short-lived feature branches. A 'release' branch is created from 'develop' for UAT and stabilization.
   4. A 'dev' branch for all work, a 'test' branch for UAT, and a 'prod' branch for releases.

   The Git Flow branching strategy (main -> develop -> feature branches, with release branches for UAT) is the recommended approach for Dynamics 365 development. It supports parallel feature development, provides a stable develop branch for integration, release branches for UAT stabilization, and hotfix branches from main for production fixes.
3. Q3 Plan Architecture and Solution Design (5-10%)

   You need to recommend a deployment approach for a Dynamics 365 Finance and Operations solution. The solution includes model extensions, reports, and data entities. Which deployment method should you use?

   1. Copy individual X++ files to the server.
   2. Create and apply a deployable package.
   3. Use the Azure portal to deploy directly.
   4. Manually compile each model on the target environment.

   Deployable packages are the standard deployment unit for Dynamics 365 Finance and Operations. They bundle model metadata, binaries, reports, and other resources into a single package that can be applied to any environment (development, test, or production) through Lifecycle Services (LCS).
4. Q4 Plan Architecture and Solution Design (5-10%)

   You need to design a solution for Dynamics 365 Finance and Operations that will integrate with an external warehouse management system. The integration requires near real-time inventory updates. Which Azure service would you recommend for reliable message-based integration?

   1. Azure Blob Storage
   2. Azure Service Bus
   3. Azure Table Storage
   4. Azure Traffic Manager

   Azure Service Bus is the recommended messaging service for reliable, near real-time integration between Dynamics 365 and external systems. It supports queues and topics for publish/subscribe patterns, provides delivery guarantees, and handles transient failures with retry and dead-lettering capabilities.
5. Q5 Plan Architecture and Solution Design (5-10%)

   You are planning the data migration strategy for a Dynamics 365 Finance and Operations implementation. Which tool should you use for importing master data and transactional data?

   1. Excel add-in
   2. Data Management Framework (DMF)
   3. SQL Server Import/Export Wizard
   4. Power Query

   The Data Management Framework (DMF) is the primary tool for importing and exporting data in Dynamics 365 Finance and Operations. It supports data entities, staging, validation, and error handling for both master data and transactional data imports.
6. Q6 Plan Architecture and Solution Design (5-10%)

   You need to evaluate extensibility options for modifying a standard Dynamics 365 Finance form. The solution must be upgrade-proof. Which approach should you recommend?

   1. Overlay the form in the USR layer.
   2. Create a form extension using extensions model.
   3. Modify the standard form directly.
   4. Create a new form from scratch.

   Extensions (using Chain of Command, event handlers, and form extensions) are the recommended approach for customizing Dynamics 365. Unlike overlaying, extensions are upgrade-proof because they don't modify the base objects. They coexist with the base solution and survive upgrades without manual rework.
7. Q7 Plan Architecture and Solution Design (5-10%)

   A solution architect needs to design a high-availability strategy for Dynamics 365 Finance and Operations. Which SLA covers the production environment in Microsoft-managed deployments?

   1. 99.9% monthly uptime SLA
   2. 99.99% monthly uptime SLA
   3. 99.95% monthly uptime SLA
   4. 100% uptime guarantee

   Microsoft-managed Dynamics 365 Finance and Operations production environments are covered by a 99.9% monthly uptime SLA (Service Level Agreement). This includes financial credits if the SLA is not met. Tier-2+ sandbox environments have a lower SLA.
8. Q8 Plan Architecture and Solution Design (5-10%)

   You are designing the application lifecycle management (ALM) strategy for a Dynamics 365 project. You need to ensure that code changes are validated before being merged into the main branch. What should you implement?

   1. A manual code review process.
   2. Pull request policies with required reviewers and build validation.
   3. Direct commits to the develop branch.
   4. Weekly code review meetings.

   Pull request policies in Azure DevOps enforce quality gates before code is merged. Policies can require specific reviewers, successful build validation, and comment resolution. This ensures that all code changes are validated and reviewed before integration.
9. Q9 Plan Architecture and Solution Design (5-10%)

   You need to identify solution requirements for a Dynamics 365 Finance and Operations implementation. The customer wants to extend standard functionality without compromising future upgradeability. Which development approach should you recommend?

   1. Overlaying with modifications in the USR layer.
   2. Using extensions, event handlers, and Chain of Command.
   3. Modifying the ISV layer.
   4. Writing direct SQL commands for custom logic.

   Extensions using the Extensibility framework (including Chain of Command, event handlers, form extensions, and data entity extensions) are the recommended approach for upgrade-proof customizations. This approach ensures that customizations remain intact after applying service updates and hotfixes.
10. Q10 Apply Developer Tools (5-10%)

    You are using the performance timer to monitor and optimize Dynamics 365 performance. You need to view information about how many users are currently using the application. Which performance counter should you use?

    1. Services Session Provider
    2. Web Client Session
    3. Forms
    4. GC

    The Services Session Provider performance counter in the performance timer tool provides information about active user sessions. This includes how many users are currently connected to the application. Web Client Session shows web session counts, and GC tracks garbage collection.
11. Q11 Apply Developer Tools (5-10%)

    You develop a model extension for Dynamics 365 Finance that extends objects from the Application Foundation package. You need to create and configure a new model for the extension. Which two actions should you perform?

    1. Create an extension class that references the Application Foundation.
    2. Assign the model to the USR layer.
    3. Reference the Application Foundation package when creating the extension model.
    4. Create a new model that builds into its own separate assembly.
    5. Create a new model that is part of an existing package.

    When creating a model extension, you must create an extension class (A) that contains the extension logic referencing the base package. The model should be created to build into its own separate assembly (D), which allows independent deployment. This follows the extensibility best practices for vanilla (non-overlay) customizations.
12. Q12 Apply Developer Tools (5-10%)

    You develop a model extension for Dynamics 365 Finance. You must create a model extension that extends objects from the Application Suite package. Which two actions should you perform?

    1. Assign the model to the VAR layer.
    2. Create a new model and add a reference to the Application Suite package.
    3. Create an extension class that references a class in the Application Suite.
    4. Create a new model that is part of an existing Application Suite package.

    When extending objects from the Application Suite package, you create a new model and add a reference to the Application Suite (B) to access its objects. You also create an extension class (C) that defines the customizations. The model should not be part of the existing package — it must be a separate model.

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