A developer creates a codeunit that is used to import vendor data from a CSV file. The codeunit has a procedure that reads each line and creates a vendor record. The developer wants to ensure that the procedure stops processing if an error occurs, and that the user sees a friendly message. Which trigger or mechanism should the developer use?

Use the Error procedure to raise an error and stop processing.

Use the OnInsert trigger on the Vendor table to validate data.

Use the OnAfterGetRecord trigger on the page to handle errors.

Use the OnRun trigger to call the procedure and handle errors with try-catch.

A company has a custom extension that modifies the behavior of the Sales Order page. The extension needs to run additional logic whenever a sales order is posted, but the extension cannot modify the standard posting codeunit. What should the developer do?

Subscribe to an event that is raised by the posting codeunit and add the logic in the event subscriber.

Create a new codeunit that duplicates the posting logic and call it from the Sales Order page.

Create a new page that replaces the Sales Order page and includes the additional logic.

Modify the standard posting codeunit to call the extension's codeunit.

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Domain 3Objective 4

Develop Codeunits MB-820 Practice Questions (Page 5)

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 21–25

21foundation · easy
Which trigger is executed when a new record is inserted into a table?
Select an answer first
22foundation · easy
In a table object, which trigger is used to validate data before a record is modified?
Select an answer first
23application · medium
A developer creates a codeunit that is used to import vendor data from a CSV file. The codeunit has a procedure that reads each line and creates a vendor record. The developer wants to ensure that the procedure stops processing if an error occurs, and that the user sees a friendly message. Which trigger or mechanism should the developer use?
Select an answer first
24application · medium
A company has a custom extension that modifies the behavior of the Sales Order page. The extension needs to run additional logic whenever a sales order is posted, but the extension cannot modify the standard posting codeunit. What should the developer do?
Select an answer first
25foundation · easy
Which attribute is used to define an event subscriber in AL?
Select an answer first

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Develop Codeunits MB-820 Practice Questions (Page 5)

Questions 21–25

Which trigger is executed when a new record is inserted into a table?

In a table object, which trigger is used to validate data before a record is modified?

A company has a custom extension that modifies the behavior of the Sales Order page. The extension needs to run additional logic whenever a sales order is posted, but the extension cannot modify the standard posting codeunit. What should the developer do?

Which attribute is used to define an event subscriber in AL?

Keep studying — Develop by using AL objects