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| Certification Vendor: | Microsoft |
|---|---|
| Exam Name: | Microsoft Dynamics 365 Business Central Developer |
| Exam Number: | MB-820 |
| Real Exam Qty: | 40–60 |
| Certificate Validity Period: | 1 year |
| Exam Price: | $165 USD |
| Passing Score: | 700 (on a scale of 1–1000) |
| Available Languages: | English |
| Exam Format: | Drag and drop, Multiple choice, Case studies, Active screen, Build list |
| Exam Duration: | 90 minutes |
| Recommended Training: | Microsoft Learn: Dynamics 365 Business Central Developer Learning Paths |
| Exam Registration: | Microsoft Learn Exam Registration Pearson VUE |
| Sample Questions: | Microsoft MB-820 Sample Questions |
| Exam Way: | Online proctored or onsite testing center |
| Pre Condition: | Recommended: 1–2 years experience developing Business Central solutions, familiarity with AL language, Visual Studio Code, and development lifecycle |
| Official Syllabus URL: | https://learn.microsoft.com/en-us/credentials/certifications/resources/study-guides/mb-820 |
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NEW QUESTION # 86
Hotspot Question
You are creating a new Business Central report.
You plan to use triggers and functions to dynamically create a dataset and control the report behavior.
You must provide the following implementation:
- Run when the report is loaded.
- Run when the data item is iterated for the last time.
- Skip the rest of the report.
You need to select the triggers and functions for the report.
Which triggers and functions should you use? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
NEW QUESTION # 87
An external system must be notified whenever a customer record is modified in Business Central Online. Polling is not acceptable.
Which integration approach should you recommend?
Answer: C
NEW QUESTION # 88
You need to handle the removal of the Description field and the Clone procedure without breaking other extensions.
Which three 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.
NOTE: More than one order of answer choices is correct. You will receive credit for any of the correct orders you select.
Answer:
Explanation:
1 - Set the Description field as OBsoleteState....2.0.0.0.
2 - Set the Clone procedure as ObsoleteState....2.0.0.0.
3 - Remove the Description field from the issue table in version 2.0.0.1.
NEW QUESTION # 89
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?
Answer: A
Explanation:
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.
NEW QUESTION # 90
You need to create the access modifier for IssueTotal.
Which variable declaration should you use?
Answer: A
Explanation:
In Business Central development using AL (the language for Business Central extensions), the use of access modifiers defines how variables and procedures are accessed within and outside of an object or codeunit.
Access Modifiers in AL:
Public: A public variable can be accessed from any object or codeunit within the same module or extension.
Protected: This restricts access to the current object and objects that inherit from the current object. However, in AL (at least in versions used for Business Central), the Protected access modifier is used with methods but not variables.
Internal: This modifier restricts the visibility to the current extension. This means that variables or methods declared as internal can only be accessed from within the same extension. This is appropriate when you want to provide functionality that is shared within the extension but not exposed externally.
Local: This restricts the variable or method to the current object or method where it is declared. It cannot be accessed from anywhere else, even within the same extension.
Scenario Justification:
In the scenario for Contoso, Ltd., IssueTotal is a global variable in the ISSUE BASE extension, and the ISSUE EXT extension needs to access it. Therefore, the variable cannot be declared as Local, because this would restrict access to just the current object (or method).
Using Public would expose the variable outside of the extension, which is unnecessary because you only want other parts of the extension (specifically the ISSUE EXT extension) to have access.
The best choice in this case is Internal because it restricts access to the variable to within the same extension, which includes the base extension and any dependent extensions like ISSUE EXT. It strikes the right balance between visibility and encapsulation.
Microsoft Dynamics 365 Business Central Developer Reference:
Access Modifiers in AL: Microsoft's documentation on AL provides the details on access modifiers, where it is specified that internal variables can be accessed within the extension, and the public variable is accessible across all extensions【source: Microsoft Learn on AL Programming】.
Best Practices for AL Development: Business Central development best practices suggest keeping variables internal unless they need to be accessed outside of the current extension【source: Microsoft Learn on AL development guidelines】.
NEW QUESTION # 91
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