A company has multiple shipping providers, each with a different rate calculation. The developer wants to create a common way to calculate shipping rates so that the main sales process can call any provider's implementation interchangeably. The solution must enforce that every provider implements the same set of methods. Which AL feature should the developer use?

Define an interface with the required methods and implement it in each provider codeunit.

Use an event to publish the rate calculation and have each provider subscribe to it.

Create a single codeunit with a large CASE statement to handle all providers.

Create a codeunit for each provider and call them conditionally based on the provider code.

A partner is upgrading an extension from version 1 to version 2. In version 1, the extension stored customer discount percentages in a field on the Customer table. In version 2, the discount logic has been moved to a new table with a new field structure. The upgrade codeunit must transform the data. During testing, the upgrade codeunit fails when it calls a function from a codeunit that was introduced in version 2. The upgrade codeunit is marked with the UpgradeCompanyCodeunit property. What is the most likely cause of the failure?

The upgrade codeunit must be compiled against the new application version before it can run.

The upgrade codeunit does not have the proper permissions to call the new codeunit.

The upgrade codeunit is running in the old application version where the new codeunit does not exist.

The upgrade codeunit must be marked as a normal codeunit, not an upgrade codeunit, to call other codeunits.

In AL, what is the primary purpose of a codeunit?

To encapsulate business logic that can be called from other objects

To store data in tables and manage database records

To control which users can access the application

To define the user interface layout for pages

A company has an existing Business Central extension that stores customer data in a table. A new version of the extension changes the table schema by adding a new field. The developer needs to ensure that existing customer records are updated with a default value for the new field when the extension is upgraded. Which type of codeunit should the developer create?

Normal codeunit with a setup procedure

Microsoft Certified:Dynamics 365 Business Central Developer Associate

Domain 3Objective 4

Develop Codeunits MB-820 Practice Questions (Page 3)

Part of the Develop by using AL objects domain, which accounts for 35–40% of the MB-820 exam. Microsoft does not publish an official question count, but from its 100-minute exam (~40–65 total, ~14–26 in this domain), expect 2–4 from this objective — we provide 25 practice questions to prepare you well beyond it. (estimate)

25questions here

5free pages

7concepts

35–40%of the exam

Questions 11–15

11application · medium
A company has multiple shipping providers, each with a different rate calculation. The developer wants to create a common way to calculate shipping rates so that the main sales process can call any provider's implementation interchangeably. The solution must enforce that every provider implements the same set of methods. Which AL feature should the developer use?
Select an answer first
12foundation · easy
Which AL object type is used to define a codeunit?
Select an answer first
13expert · hard
A partner is upgrading an extension from version 1 to version 2. In version 1, the extension stored customer discount percentages in a field on the Customer table. In version 2, the discount logic has been moved to a new table with a new field structure. The upgrade codeunit must transform the data. During testing, the upgrade codeunit fails when it calls a function from a codeunit that was introduced in version 2. The upgrade codeunit is marked with the UpgradeCompanyCodeunit property. What is the most likely cause of the failure?
Select an answer first
14foundation · easy
In AL, what is the primary purpose of a codeunit?
Select an answer first
15application · medium
A company has an existing Business Central extension that stores customer data in a table. A new version of the extension changes the table schema by adding a new field. The developer needs to ensure that existing customer records are updated with a default value for the new field when the extension is upgraded. Which type of codeunit should the developer create?
Select an answer first

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Develop Codeunits MB-820 Practice Questions (Page 3)

Questions 11–15

Which AL object type is used to define a codeunit?

In AL, what is the primary purpose of a codeunit?

Keep studying — Develop by using AL objects