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Microsoft MB-820 Exam Syllabus Topics:

SectionObjectives
Develop by using AL- Business Central application structure
  • 1. Extensions and objects
    • 2. Tables and pages
      - AL language fundamentals
      • 1. Procedures and events
        • 2. Data types and variables
          Integrate solutions- Data integration
          • 1. Data import/export
            • 2. APIs and web services
              Deploy and maintain solutions- Deployment processes
              • 1. Environment management
                • 2. Extension packaging
                  Debug and optimize solutions- Performance optimization
                  • 1. Query optimization
                    • 2. Code efficiency
                      - Troubleshooting
                      • 1. Error handling
                        • 2. Debugging tools
                          Extend Dynamics 365 Business Central- Extension development
                          • 1. Table extensions
                            • 2. Page extensions
                              - Customization techniques
                              • 1. Custom business logic
                                • 2. Event subscribers

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                                  Microsoft Dynamics 365 Business Central Developer Sample Questions (Q13-Q18):

                                  NEW QUESTION # 13
                                  You need to access the RoomsAPI API from the canvas app.
                                  What should you do?

                                  Answer: C

                                  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


                                  NEW QUESTION # 14
                                  A company plans to integrate tests with its build pipelines.
                                  The company has two Docket sandbox environments: SandboxA and SandboxB.
                                  You observe the following:
                                  * SandboxA is configured without the Test Toolkit installed.
                                  * SandboxB must be configured from scratch. The Test Toolkit must be installed in SandboxB during configuration.
                                  You need to configure the sandbox environments.
                                  How should you complete the cmdlets? To answer, select the appropriate options in the answer area.

                                  Answer:

                                  Explanation:


                                  NEW QUESTION # 15
                                  You need to write the code to call the subcontractor's REST API.
                                  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.

                                  Answer:

                                  Explanation:


                                  NEW QUESTION # 16
                                  Hotspot Question
                                  You are developing a report in AL. The report uses a request page.
                                  Users must be able to preview the report from the request page multiple times without the request page closing.
                                  You need to develop the request page to meet the user requirements.
                                  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.

                                  Answer:

                                  Explanation:

                                  Explanation:
                                  Box 1: SaveValues = true;
                                  Box 2: AllowScheduling = true;
                                  Combination: In Business Central AL development, multiple previews without closing the request page require both SaveValues = true and AllowScheduling = true to be set.
                                  Behavior: If either property is false, the request page button falls back to "Preview & Close" and automatically shuts the page upon rendering a preview.
                                  Reference:
                                  https://learn.microsoft.com/en-us/dynamics365/business-central/dev-itpro/developer/properties/devenv-allowscheduling-property


                                  NEW QUESTION # 17
                                  A company plans to change a field on the Resource Card page in a Base Application.
                                  You need to hide the field "Unit Price" from the Resource Card page.
                                  Which code snippet should you use?

                                  Answer: D

                                  Explanation:
                                  To hide the field "Unit Price" from the Resource Card page in Microsoft Dynamics 365 Business Central, you need to modify the visibility property of the field using the modify keyword, which allows you to change the properties of an existing field on a page.
                                  * modify("Unit Price") is the correct way to target an existing field on a page (like the Resource Card page).
                                  * The line Visible = false; makes the field invisible on the page.
                                  Here's a breakdown of why each option is right or wrong:
                                  * Option A:
                                  * Uses addlast("Unit Price"), which is incorrect because you are not adding a new field; you're modifying an existing one. Also, Visible = false is correct for hiding a field, but the wrong method (addlast) is used.
                                  * Option B:
                                  * Uses modify("Unit Price") with Enabled = false;. This would disable the field (make it non- editable), not hide it. The field would still be visible, so this does not meet the requirement.
                                  * Option C:
                                  * Uses addlast("Unit Price"), which is incorrect, and Enabled = false;, which would disable the field, not hide it.
                                  * Option D:
                                  * modify("Unit Price") { Visible = false; } is the correct syntax for hiding the field on the page.
                                  Correct Code Snippet:
                                  modify("Unit Price")
                                  {
                                  Visible = false;
                                  }
                                  This hides the "Unit Price" field from the Resource Card page.


                                  NEW QUESTION # 18
                                  ......

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