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Question # 1



A company has a test application.

A user observes the following error messages when running the test:

• "Unhandled Ul: Message'
• "Unhandled Ul: Confirm"

You need to resolve the errors. Which action should you take?
A. Create a separate test runner codeunit that has Message Handler and Confirm Handler methods.
B. Create the Message Handler and Confirm Handler methods in the test runner codeunit.
C. Create a separate test codeunit that has Message Handler and Confirm Handler methods.
D. Create the Message Handler and Confirm Handler methods in the test codeunit.



B.
  Create the Message Handler and Confirm Handler methods in the test runner codeunit.

Explanation:

A user observes error messages such as:

"Unhandled UI: Message"
"Unhandled UI: Confirm"

These messages indicate that the test code is not handling system prompts like Message and Confirm dialogs, which can appear during test execution.

Options Explanation:

Message Handler and Confirm Handler methods are used to intercept and handle these UI prompts during automated testing.

These methods should be added to the test runner codeunit, which is responsible for running the tests and handling these system-level interactions.





Question # 2



You need to improve performance when ticketAPI is used to analyze the POS data. What should you do?
A. Set the ODataReadonlyGetEnabled parameter to True in the Business Central admin center.
B. Set the AceesByPermission property to Read on the ticketAPI API page.
C. Enable read scale-out on the Business Central database.
D. Set the DataAccesslntent property to Readonly on the ticketAPI API page.



C.
  Enable read scale-out on the Business Central database.

Explanation:

Read Scale-Out:

Read scale-out is a feature in Business Central that allows you to improve performance by distributing read-only queries (such as the ones from the ticketAPI) across multiple read replicas in the cloud database. This reduces the load on the primary database and helps improve the response time for read-intensive operations, like analyzing POS data through the ticketAPI.

Data Access Intent - ReadOnly:

When enabling read scale-out, you can configure the DataAccessIntent property of APIs to be ReadOnly. This directs the system to use read replicas to handle read-only queries, which enhances performance by offloading such queries from the primary database.

Why Not Other Options?

Option A (ODataReadonlyGetEnabled): This parameter is unrelated to read scale-out and primarily affects OData services behavior, not API performance tuning.

Option B (AccessByPermission): Setting the permission to Read does not directly affect the performance. It only controls access based on user permissions.

Option D (DataAccessIntent ReadOnly): While setting this property to ReadOnly helps in read-only operations, enabling read scale-out (option C) ensures the underlying infrastructure is optimized to handle such read operations, which is the fundamental action required.

Reference Documentation:

Read Scale-Out in Business Central

Data Access Intent in AL





Question # 3



You plan to write unit test functions to test newly developed functionality in an app. You must create a test codeunit to write the functions. You need to select the property to use for the test codeunit. Which property should you use to ensure that the requirements are fulfilled?
A. SubType
B. Access
C. Description



A.
  SubType

Explanation:

When creating a test codeunit in Microsoft Dynamics 365 Business Central to write unit test functions, the SubType property (A) of the codeunit should be set to Test. This property is crucial for defining the codeunit's purpose and behavior within the application. By setting the SubType property to Test, you are indicating that the codeunit contains test functions intended to validate the functionality of other parts of the application, such as customizations or new developments. This distinction ensures that the testing framework within Business Central recognizes the codeunit as a container for test functions, allowing it to execute these functions in a testing context, which can include setting up test data, running the tests, and cleaning up after the tests have completed.




Question # 4



Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.

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 on the review screen.

A company creates a Business Central app and a table named MyTable to store records when sales orders are posted.

Users report the following issues:

• The users receive permission errors related lo MyTable.
• Users are no longer able to post sales orders since installing the new app.
• The users cannot access the list page created in MyTable.
You need to resolve the user issues without creating new permission sets. You must use the principle of least privilege.

Solution: In the MyTable object add the property InherentPermissions = Rl. Does the solution meet the goal?

A. Yes
B. No



B.
  No

Explanation:

The property InherentPermissions is used to automatically grant permissions to the table object it is applied to, but setting it to Rl (which seems to be a typo and should likely be 'RL' for Read and Insert permissions) is not sufficient in this scenario. The issues reported by the users suggest that they need more than just read and insert permissions on MyTable. Since users are unable to post sales orders, they likely need Modify, Delete, or Execute permissions on certain tables or objects related to the sales order process. Additionally, the inability to access the list page created in MyTable could be due to lacking Read permissions on other related objects or pages. Therefore, merely setting InherentPermissions = RL on MyTable does not comprehensively address the users' permission issues, especially when considering the principle of least privilege. A more tailored approach to permissions, potentially involving adjustments to the app's code or configuration to ensure proper permissions are applied where necessary, would be needed.




Question # 5



You are exporting data from Business Central. You must export the data in a non-fixed length and width in CSV format. You need to generate an XMLport to export the data in the required format Which Format property value should you use?
A. XML
B. VariableText
C. FixedText



B.
  VariableText

Explanation:

When exporting data from Business Central and the requirement is for the data to be in a non-fixed length and width CSV format, the Format property of the XMLport should be set to VariableText (B). The VariableText format is designed for handling data exports where the fields are separated by a delimiter, such as a comma or tab, which is typical of CSV (Comma-Separated Values) files. This format allows for the flexibility needed when dealing with varying field lengths, as it does not enforce a fixed width for each field, making it ideal for CSV data exports. Setting the Format property to FixedText (C) would enforce a fixed width for each field, which is not suitable for CSV files, while the XML format (A) is used for exporting data in an XML structure, which is different from the CSV format requirements.





Question # 6



You need to define the tables used for the non-conformity entity. What should you use?
A. document history table to introduce the non-conformity entities
B. document table to introduce the non-conformity entities
C. supplemental table to introduce the non-conformity lines



B.
  document table to introduce the non-conformity entities

Explanation:

Table Structure in Business Central: When creating entities such as "non-conformity" entities in Business Central, you use document tables to represent entities that have a header and line structure. In this case, the non-conformity entity has:

A header with common information (Non-conformity Number, Date, Vendor No., etc.).

One or more lines representing the detailed information for each non-conforming item.

Document Table Usage:

Document Table: A document table is the correct table type for scenarios where you have a header (with general information like vendor details) and lines (with detailed, item-specific information).

Document tables are typically used for entities such as Sales Orders, Purchase Orders, or any other transactional data where you have both header and line information.

Supplemental Table (Option C):

Supplemental tables are usually used to add supplementary information to existing data in Business Central. In this case, we need to store detailed line information, which is a core part of the entity rather than supplementary data, so a supplemental table would not be appropriate here.

Document History Table (Option A):

Document history tables are used to track changes and historical data for entities but are not suitable for the main introduction of the entity and its lines. This option is also not appropriate.

Reference Documentation:

Introduction to Business Central Tables

Document Tables in Business Central





Question # 7



You need to access the RoomsAPI API from the canvas app. What should you do?
A. Use the default API configuration in Business Central
B. Enable the APIs for the Business Central online environment.
C. Open the Web Services page and publish the RoomsAPI page as a web service.
D. Include in the extension a codeunit of type Install that publishes RoomsAPI.



C.
  Open the Web Services page and publish the RoomsAPI page as a web service.

Explanation:

API Publishing for Extensions:

In Business Central, when creating custom APIs like RoomsAPI, it is important to ensure that they are automatically published during the installation or upgrade of the extension.

To achieve this, you can include a codeunit of type Install in the extension that explicitly publishes the custom API (RoomsAPI) as a web service. This ensures that it is available for use immediately after the extension is deployed without requiring manual intervention.

Codeunit Type:

A codeunit of type Install runs when the extension is installed or upgraded. This type of codeunit can be used to perform setup tasks such as publishing web services or APIs like RoomsAPI.

Why Not Other Options?

Option A (default API configuration): This would not automatically publish the RoomsAPI. Default APIs do not cover custom APIs.

Option B (enable APIs for the environment): Enabling APIs in Business Central allows the standard APIs to be used, but custom APIs still need to be manually published.

Option C (publish via Web Services page): This would work but requires manual intervention to publish RoomsAPI, which does not fulfill the requirement of automatic publishing during installation.

Reference Documentation:

Publishing APIs in Extensions
Codeunit Types in Business Central




Question # 8



You need to determine why the debugger does not start correctly. What is the cause of the problem?
A. The "userld" parameter must have the GUID of the user specified, not the username.
B. The "breakOnNext" parameter is not set to -WebServiceClient".
C. The "userld" parameter is specified, and the next user session that is specified in the 'breakOnNext" parameter is snapshot debugged.
D. The "executionContext* parameter is not set to "Debug".



A.
  The "userld" parameter must have the GUID of the user specified, not the username.

Explanation:

In Microsoft Dynamics 365 Business Central, when configuring snapshot debugging, it is crucial that the parameters in the configuration file are correctly set. From the options provided, the issue with the debugger not starting correctly is most likely due to an incorrect "userId" parameter.

Option A is the cause of the problem. The "userId" parameter must be the GUID of the user, not the username. The snapshot debugger needs the exact GUID to attach to the right session for debugging.

Option B is incorrect because "breakOnNext" set to "WebClient" is a valid setting. This tells the debugger to break on the next client action in the web client, which is a typical scenario.

Option C is not the cause of the problem. The "userId" parameter is meant to specify which user session to debug, and this works in conjunction with the "breakOnNext" parameter.

Option D is incorrect as the "executionContext" parameter does not need to be set to "Debug" for snapshot debugging to work. "DebugAndProfile" is a valid value for the "executionContext" parameter, as it allows for debugging and collecting performance information.

Therefore, the reason why the debugger does not start correctly is due to Option A: The "userId" parameter must have the GUID of the user specified, not the username.





Question # 9



You are creating an entitlement object in Business Central to enable transactability for AppSource apps. You must map the entitlement object to a plan in Partner Center. You need to select the value of the Type property to use in the entitlement object. Which value should you use?
A. PerUserServicePlan
B. Implicit
C. Unlicensed
D. Role



A.
  PerUserServicePlan

Explanation:

In Business Central, when creating an entitlement object to enable transactability for AppSource apps and mapping it to a plan in Partner Center, the Type property of the entitlement object should be set to PerUserServicePlan (A). The PerUserServicePlan type is used to define an entitlement that is based on a service plan, which is typically how transactability features are managed for apps distributed through AppSource. This type of entitlement allows for the mapping of specific features or capabilities of the app to a service plan in Partner Center, enabling granular control over what users are entitled to use based on their subscription. The other values, such as Implicit (B), Unlicensed (C), and Role (D), are used in different contexts and do not apply to the scenario of mapping an entitlement object to a plan for AppSource apps.




Question # 10



You are cleaning up sandbox environments for a company. The company requires data to be cleared from the environments each time an extension is published. You need to configure the launch.json file. Which schemaUpdateMode property should you set?
A. ForceUpgrade
B. ForceSync
C. Synchronize
D. Recreate



D.
  Recreate

Explanation:

In the context of cleaning up sandbox environments for a company where data needs to be cleared each time an extension is published, the schemaUpdateMode property in the launch.json file should be set to Recreate (D). Setting this property to Recreate ensures that every time the extension is published, the existing tables and data are dropped, and then the tables are recreated based on the current extension's schema. This mode is particularly useful in development and testing environments where you need a clean slate for testing each version of the extension without the remnants of previous data affecting the outcomes. It's important to use this setting cautiously, as it results in the loss of all existing data in the tables defined by the extension, which is suitable for a sandbox environment but not for production environments.



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Microsoft Dynamics 365 Business Central Developer Exam Dumps


Exam Code: MB-820
Exam Name: Microsoft Dynamics 365 Business Central Developer

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Questions People Ask About MB-820 Exam

MB-820 exam is the Microsoft Dynamics 365 Business Central Developer certification exam. It tests your ability to design, develop, test, and maintain solutions based on Dynamics 365 Business Central.

A Business Central Developer specializes in customizing and configuring Microsoft Dynamics 365 Business Central, a comprehensive business management solution. These developers tailor the platform to fit specific business needs through coding, implementing additional functionalities, and integrating third-party applications.

AL language is the primary programming language used for customizing and extending Microsoft Dynamics 365 Business Central. It's a modern language designed specifically for developing business applications on the Business Central platform.

A Dynamics 365 Developer requires a mix of technical and soft skills. Technically, proficiency in Microsoft development environments like .NET, C#, and Visual Studio is crucial. Knowledge of JavaScript for client-side scripting and familiarity with Power Platform for integrations and customizations are also important.