Microsoft MB-820 Exam Practice Questions
US$39
Every question with the correct answer and why the other options are wrong.
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Three of the 131 questions in this pack
Question 1
You are exporting data from Business Central. You must export the data in a non-fixed length and width in CSV format. You need to generate an XMLport to export the data in the required format. Which Format property value should you use?
Show answer and explanation
Correct answer: B. VariableText
VariableText is the correct format property for exporting data in CSV format with non-fixed length and width. This format allows variable-length fields separated by delimiters, which is the standard CSV behavior. XML format is for XML data structures, and FixedText is for fixed-width data where each field occupies a predetermined number of characters.
Why the other options are wrong
- A. XML format is used for structured XML data export, not CSV format.
- C. FixedText format enforces fixed-width columns, which contradicts the requirement for non-fixed length and width.
Question 2
A company has a task that is performed infrequently. Users often need to look up the procedure to complete the task. The company requires a wizard that leads users through a sequence of steps to complete the task. You need to create the page to enable the wizard creation. Which page type should you use?
Show answer and explanation
Correct answer: A. NavigatePage
NavigatePage is the correct page type for creating wizards in Business Central. This page type is specifically designed to guide users through a sequence of steps, with built-in navigation controls for moving between steps. Card pages are for single-record display, RoleCenter pages are for dashboards, and List pages display multiple records.
Why the other options are wrong
- B. Card pages are designed for viewing and editing individual records, not for multi-step wizards.
- C. RoleCenter pages provide dashboards and role-based views, not step-by-step guided processes.
- D. List pages display collections of records in a tabular format, not wizard sequences.
Question 3
Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution. After you answer a question in this section, you will NOT be able to return to it. As a result, these questions will not appear in the review screen. A company creates a Business Central app and a table named MyTable to store records when sales orders are posted. Users report the following issues: • The users receive permission errors related to MyTable. • Users are no longer able to post sales orders since installing the new app. • The users cannot access the list page created in MyTable. You need to resolve the user issues without creating new permission sets. You must use the principle of least privilege. Solution: In the MyTable object, add the property InherentPermissions = RI. Does the solution meet the goal?
Show answer and explanation
Correct answer: A. Yes
Setting InherentPermissions = RI on the MyTable object grants Read and Insert permissions implicitly. This allows the posting functionality to work and users to access the list page without requiring new permission sets. The R (Read) permission enables list page access and the I (Insert) permission enables the posting of sales orders, adhering to the principle of least privilege by granting only necessary permissions.
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How much of the Microsoft MB-820 bank is free?
131 questions in the bankEach step includes the one before, so buying only adds new questions.
- You are here10questionsFree sampleThree on this page, all ten as a PDF.Download the sample
- 1915% of the bankPractice pageFree on the site, every answer explained.Go to the practice page
- 2721% of the bankHalf PackFree by email, as one PDF, every answer explained.Get the Half Pack
- 131100%, the whole bankFull pack, US$39Plus the questions-only PDF, monthly updates, refund if you fail.Get the full pack
What’s in the Microsoft MB-820 pack
- 131 questions mapped to the MB-820 exam objectives
- Answers and explanations for every question, including the wrong options
- A questions-only PDF for timed practice runs
- Delivered by email shortly after checkout
- Free monthly updates for as long as the exam is live
- Pass or your money back
An MB-820 attempt costs US$165 in the US. This pack is US$39, paid once.
What makes the MB-820 hard
MB-820 is the AL exam, and it rewards candidates who have shipped an extension rather than just read about one. Microsoft's June 2025 refresh left the weighting alone but rewrote the API section, so OData bound and unbound actions and Read Scale-Out are now explicitly in scope alongside the HTTP and JSON classes.
Develop by using AL objects is over a third of the exam: Role Center pages and page types, table and enum extensions, report substitution and layouts, document reports, request pages and processing-only reports, XMLports and their node properties, codeunits with events, triggers, interfaces and install and upgrade codeunits, permission sets and entitlements with inherent permissions, and query objects for joins, filters and aggregation.
The AL language domain adds profiles and views in code, the user assistance model, assisted setup, teaching tips, in-app tours and onboarding checklists, plus the data process model, functional table types, document and master data patterns, error handling and access modifiers. Tools covers the Test Toolkit and test codeunits, and telemetry configuration with custom signals. The describe and deploy domains are lighter but expect knowledge of base app versus system app, the AppSource process, multi-extension workspaces and multilanguage development.
About the exam
MB-820 (Microsoft Dynamics 365 Business Central Developer) leads to the Dynamics 365 Business Central Developer Associate credential. It covers Business Central architecture and apps, the development environment and extension deployment, AL objects including pages, tables, reports, XMLports, codeunits, permission sets and queries, AL language and UI customisation, testing and telemetry, and REST and API integration. Associate level, no prerequisites. Skills measured as of 10 June 2025.
Questions before you buy
How quickly do I receive it?
Your PDF is prepared and sent to your email address after checkout, and you get a confirmation as soon as it is on its way.
Are updates included?
Yes. The pack is updated every month for as long as the exam is live, and updates are free for everyone who has bought it.
What if I fail the exam?
We refund the pack, or swap it for any other pack if you would rather keep studying. Sit the exam 7 to 30 days after buying, then send your official score report within 7 days of the exam date, as set out in the refund policy.
What is your pass rate?
99% of customers who prepare with a CertStash pack pass. If you do not, we refund the pack, or swap it for another pack.
Can I share it with colleagues?
Each purchase is licensed to one person. For a team, school or training organisation, email support@certstash.com for a licence that fits.
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Neil Henke –
Seriously, I was shocked. During the actual MB-820 exam, I felt like I was retaking the Certstash practice test. The structure, the question styles, and even some of the tricky scenario-based questions were almost identical. This is more than just study material; it’s a simulation. Passed with a 910! A huge thank you to the team.
Angel Mason –
I've used other 'dump' sites before, and they were riddled with mistakes or outdated questions. Certstash is clearly curated and regularly updated. Considering the cost of retaking the MB-820, this material is cheap insurance. Passed easily and will be coming back for my next Dynamics certification.
Virgil Goodson –
I loved that the PDF format was so clean and easily downloadable. I studied exclusively on my iPad during my train commute every morning. The ability to highlight and make notes directly on the document, even offline, was a huge advantage. Perfect for professionals who can’t sit at a desk for hours!
Madeline Shirey –
Against my own terrible planning, I had just 72 hours to cram. I hammered the Certstash practice bank, targeting the trickier X++ and extensibility questions, and I actually passed! If you need a fast, reliable pass, this is the essential resource. Highly recommended!