Microsoft Microsoft Certifications MB-820 Questions & Answers

• Question 1:

  A company is deploying Business Central on-premises.

  The company plans to use a single-tenant deployment architecture.

  You need to describe how the data is stored and how the Business Central Server is configured.

  In which two ways should you describe the single-tenant architecture? Each correct answer presents a complete solution.

  NOTE: Each correct selection is worth one point.

  A. Each customer has their own Business Central Server.

  B. The application and the business data are stored in the same database.

  C. Multiple customers share a single Business Central Server.

  D. The application and business data are stored in separate databases.

  E. Multiple customers share multiple Business Central Server instances.

  Correct Answer: BD

  In a single-tenant deployment architecture of Business Central on-premises, the following characteristics describe how the data is stored and how the Business Central Server is configured: The application and the business data are stored in the same database (B): In a single-tenant architecture, each tenant (which typically corresponds to a single customer) has its own dedicated database. This database contains both the application objects (such as pages, reports, codeunits, etc.) and the business data (such as customer, vendor, and transaction records). This setup ensures that each tenant's data is isolated and can be managed independently. The application and business data are stored in separate databases (D): While (B) is a characteristic of a single-tenant deployment, it's important to clarify that in some configurations, the application objects can be stored in a separate database from the business data. This approach can be used for easier maintenance and upgrades of the application code without affecting the business data. However, each tenant still has its own set of databases, maintaining the single-tenancy model. The other options provided do not accurately describe a single-tenant architecture: Each customer has their own Business Central Server (A): This statement might be misleading. In a single-tenant deployment, while each customer has their own database, they do not necessarily have their own Business Central Server instance. Multiple databases (tenants) can be hosted on a single server instance, although they are not shared across customers. Multiple customers share a single Business Central Server (C) and Multiple customers share multiple Business Central Server instances (E): These options describe a multi-tenant architecture rather than a single-tenant one. In a multi- tenant setup, multiple customers (tenants) can share the same server instance and even the same application database, with data isolation ensured at the application level.

• Question 2:

  A company uses Business Central.

  The company plans to use a translation file in an extension. The extension has a caption that should not be translated.

  You need to prevent the caption from being translated.

  What should you do?

  A. Use the CaptionML property and copy the same caption for each language used.

  B. Set the GenerateLockedTranslations feature in the appjson file.

  C. Add the Locked = true parameter to the Caption.

  D. Delete the Caption property.

  E. Copy the same caption for each language in the translation file.

  Correct Answer: C

  To prevent a caption from being translated in an extension for Microsoft Dynamics 365 Business Central, you should add the Locked = true parameter to the Caption (C). This parameter explicitly marks the caption as locked for translation, ensuring that it remains unchanged across different language versions of the extension. This approach is useful for specific terms, brand names, or other elements within the application that should remain consistent regardless of the user's language settings. Unlike the other options, which involve manual manipulation of the translation file or properties, setting Locked = true directly in the AL code provides a clear, maintainable, and error-proof method to exclude specific captions from the translation process.

• Question 3:

  A company has a Business Central online environment.

  You need to create an HTTP GET request that connects to an external REST service.

  Which solution should you use?

  A. HttpContent data type variable

  B. Codeunit 1299 "Web Request Helper"

  C. Codeunit S459 "JSON Management"

  D. Codeunit 1297 "Http Web Request Mgt"

  E. HttpClient data type variable

  Correct Answer: E

  To create an HTTP GET request that connects to an external REST service in a Business Central online environment, the solution to use is the HttpClient data type variable (E). The HttpClient data type in AL language is designed for sending HTTP requests and receiving HTTP responses from a resource identified by a URI. This makes it the ideal choice for interfacing with external REST services, as it provides the necessary methods and properties to configure and execute HTTP GET requests, handle the responses, and process the data returned by the REST service. This approach is more direct and flexible compared to using specific codeunits like "Web Request Helper" (B) or "Http Web Request Mgt" (D), which might not provide the same level of control or specificity needed for RESTful interactions.

• Question 4:

  You are developing an app that will be published to Microsoft AppSource.

  The app requires code analyzers to enforce some rules. You plan to add the analyzers to the settings.json file.

  You need to activate the analyzers for the project.

  Which three code analyzers should you activate to develop the app for AppSource? Each correct answer presents part of the solution

  NOTE: Each correct selection is worth one point.

  A. CodeCop

  B. UlCop

  C. a custom rule set

  D. PerTenantExtensionCop

  E. AppSourceCop

  Correct Answer: ADE

  When developing an app for Microsoft AppSource, it is crucial to adhere to specific guidelines and standards to ensure compatibility and compliance. The three code analyzers you should activate are:

  CodeCop (A): This is the default analyzer for AL language extensions. It enforces the AL Coding Guidelines, ensuring that the code follows best practices for readability, maintainability, and performance. It checks for a wide range of issues,

  from syntax errors to best practice violations, making it essential for any AL development.

  PerTenantExtensionCop (D): This analyzer is specifically designed for extensions that are intended to be installed for individual tenants. It includes rules that ensure the extension does not interfere with the per-tenant customizations and

  adheres to the guidelines for extensions that can be safely installed and uninstalled without affecting the underlying application. AppSourceCop (E): This analyzer is tailored for extensions that are intended for publication on Microsoft

  AppSource. It enforces additional rules that are specific to AppSource submissions, such as checking for the use of reserved object ranges and ensuring that all prerequisite dependencies are correctly declared. This is crucial for ensuring

  that your app meets all the requirements for listing on AppSource. By activating these three analyzers, developers can ensure their app adheres to the standards required for AppSource, as well as maintain high code quality and compatibility

  with Business Central.

• Question 5:

  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 set 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:

  1.

  The users receive permission errors related to MyTable.

  2.

  Users are no longer able to post sales orders since installing the new app.

  3.

  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: Decorate the event subscriber used for inserting data in MyTable by entering (lnherentPermissions(PermissionOb]ectType:TableData. Database:MyTable. 'R')]

  Does the solution meet the goal?

  A. Yes

  B. No

  Correct Answer: A

  Using InherentPermissions in an event subscriber with the specified syntax could potentially resolve the permission issues related to MyTable, provided that the permissions specified (in this case, 'R' for Read) align with the minimum necessary for the users to perform their tasks. This approach allows the app to grant permissions dynamically based on the context of the event subscriber, which in this case is involved with inserting data into MyTable. By granting Read permission at the event level, it ensures that users have the necessary permissions to interact with MyTable in the context of the operations facilitated by the event subscriber, without needing to alter existing permission sets or grant broader permissions than necessary. This solution adheres to the principle of least privilege by ensuring that permissions are granted only within the narrow scope needed for specific operations, thereby potentially resolving the reported user issues in a secure and controlled manner.

• Question 6:

  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

  Correct Answer: D

  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.

• Question 7:

  A company plans to meet new regulatory requirements.

  The regulator has issued new tax tiers.

  You need to update the base application table by using a table extension.

  Which table field property can you change?

  A. CalcFormula

  B. DecimalPlaces

  C. BlankZero

  D. AutoFormatType

  Correct Answer: B

  When updating the base application table using a table extension in Microsoft Dynamics 365 Business Central, certain properties of table fields can be modified to meet new requirements, such as regulatory changes. The DecimalPlaces property (B) is one such property that can be adjusted in a table extension. This property determines the number of decimal places that are displayed and stored for decimal fields in the table. Adjusting the DecimalPlaces property can be particularly useful when dealing with financial data and tax calculations that require precision to meet new tax tiers set by a regulator. It's important to note that not all properties can be modified in a table extension; for example, the CalcFormula property (A) cannot be changed as it affects how the field's value is calculated, which could have significant implications on the base application's logic.

• Question 8:

  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

  Correct Answer: A

  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 9:

  You have a decimal variable named AmountlCY.

  You need to round up the variable to four decimal places. Which result value should you use?

  A. Result: = Round (AmountLCY,A. '>"}:

  B. Result: = Round {AmountLCY. 0.0001. =');

  C. Result: = Round (AmountLCY. 0.0001. '<'):

  D. Result: = Round (AmountLCY, 0.0001, >');

  Correct Answer: B

  To round up a decimal variable to four decimal places in Microsoft Dynamics 365 Business Central, you should use the Round function with specific parameters. The correct formula is Result := Round(AmountLCY, 0.0001, '=') (B). This function rounds the AmountLCY variable to the nearest value based on the second parameter, which is 0.0001 in this case, representing four decimal places. The third parameter, '=', specifies that the function should round to the nearest value, which effectively rounds up the value when it's halfway between two possible rounded values. This approach ensures that the AmountLCY variable is accurately rounded to four decimal places, which is essential for financial calculations and reporting to maintain precision.

• Question 10:

  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

  Correct Answer: A

  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.