A developer is creating an AL extension that imports product data from a CSV file uploaded by a user. The file is stored in a temporary folder on the server. The developer needs to read the file line by line and process each record. Which AL code pattern should the developer use?

Use File.ReadText() to read the entire file into a single string and then split it by newline characters.

Use File.Open() with the FileShare.Read mode and then call File.Read() in a loop.

Use File.Upload() to read the file content into a temporary buffer and then process the buffer.

Use File.OpenText() to open the file, then use the ReadLine() method in a loop until the end of the file.

In AL, where are variables typically declared?

At the beginning of any statement block

In the 'var' section of a procedure or codeunit

A developer is writing AL code that calls a procedure which may throw an error. The developer wants to catch the error, log it, and continue with the next iteration of a loop. Which AL construct should the developer use?

if-else around the procedure call, checking for error codes.

try-catch around the procedure call, with a LogMessage in the catch block.

repeat-until loop with a condition to retry the procedure.

case statement to handle different error types.

Microsoft Certified:Dynamics 365 Business Central Developer Associate

Domain 4Objective 3

Use AL to Extend Business Central MB-820 Practice Questions (Page 1)

Part of the Develop by using AL domain, which accounts for 15–20% of the MB-820 exam. Microsoft does not publish an official question count, but from its 100-minute exam (~40–65 total, ~6–13 in this domain), expect 2–4 from this objective — we provide 33 practice questions to prepare you well beyond it. (estimate)

33questions here

7free pages

10concepts

15–20%of the exam

Questions 1–5

1application · medium
A developer is creating an AL extension that imports product data from a CSV file uploaded by a user. The file is stored in a temporary folder on the server. The developer needs to read the file line by line and process each record. Which AL code pattern should the developer use?
Select an answer first
2foundation · easy
In AL, where are variables typically declared?
Select an answer first
3foundation · easy
Which AL data type is used to store a true/false value?
Select an answer first
4foundation · easy
Which AL construct is used to catch and handle runtime errors?
Select an answer first
5application · medium
A developer is writing AL code that calls a procedure which may throw an error. The developer wants to catch the error, log it, and continue with the next iteration of a loop. Which AL construct should the developer use?
Select an answer first

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Use AL to Extend Business Central MB-820 Practice Questions (Page 1)

Questions 1–5

A developer is creating an AL extension that imports product data from a CSV file uploaded by a user. The file is stored in a temporary folder on the server. The developer needs to read the file line by line and process each record. Which AL code pattern should the developer use?

In AL, where are variables typically declared?

Which AL data type is used to store a true/false value?

Which AL construct is used to catch and handle runtime errors?

A developer is writing AL code that calls a procedure which may throw an error. The developer wants to catch the error, log it, and continue with the next iteration of a loop. Which AL construct should the developer use?

Keep studying — Develop by using AL