Free MB-820 practice test
MB-820 is the Microsoft Dynamics 365 Business Central Developer Associate certification exam. This page gives you the full exam breakdown, how scoring works, and free unlimited practice weighted to the official skills outline. No paywall, no attempt caps.
MB-820 exam at a glance
| Fact | Detail |
|---|---|
| Certification | Dynamics 365 Business Central Developer Associate (MB-820) |
| Level | Associate |
| Track | Dynamics 365 |
| Format | About 50 questions in 100 minutes |
| Passing score | 700 out of 1000 (scaled) |
| Typical prep time | 4–6 weeks of consistent study |
| Question types | Multiple choice, drag-and-drop, case studies, and short scenarios |
Intermediate; assumes some hands-on experience with the product. Most candidates who pass spend 4–6 weeks mixing official Microsoft Learn reading with hands-on practice. The MB-820 practice test on this page mirrors the real exam's domain weights, so your score here is a good estimate of your readiness.
How the MB-820 exam is scored
Microsoft scores every certification exam on a scale of 1 to 1000, and you need 700 to pass. This is a scaled score, not a percentage: the number of questions you must answer correctly shifts slightly with each exam form so that a 700 always represents the same level of ability. There is no penalty for guessing, so answer every question even if you are unsure. Unanswered questions are always marked wrong.
Your score report groups results by the skill areas below. A fail in one area with strong scores elsewhere still fails the exam overall, so use your report to target the weakest area first before rebooking.
Skills measured on MB-820
Microsoft publishes an official skills outline that lists every MB-820 topic area and its exam weight. The practice test here draws questions from each area in proportion to these weights.
| Skill area | Exam weight | Questions in a 50-question exam | What to expect |
|---|---|---|---|
| Describe Business Central | ~12% | 6 of 50 | Expect core feature knowledge and day-to-day configuration skills. |
| Install, develop, and deploy for Business Central | ~12% | 6 of 50 | Expect planning and deployment decisions, usually tested with multi-step scenarios. |
| Develop by using AL objects | ~37% | 19 of 50 | Expect core feature knowledge and day-to-day configuration skills. |
| Develop by using AL | ~17% | 9 of 50 | Expect core feature knowledge and day-to-day configuration skills. |
| Work with development tools | ~12% | 6 of 50 | Expect core feature knowledge and day-to-day configuration skills. |
| Integrate Business Central with other applications | ~12% | 6 of 50 | Expect core feature knowledge and day-to-day configuration skills. |
What the MB-820 exam covers
In plain terms, the exam checks whether you can do the job the certification describes. MB-820 covers Describe Business Central — about 12% of the exam; Install, develop, and deploy for Business Central — about 12% of the exam; Develop by using AL objects — about 37% of the exam; Develop by using AL — about 17% of the exam; Work with development tools — about 12% of the exam; Integrate Business Central with other applications — about 12% of the exam. Treat this as a study checklist: work through each area until you can explain its tasks to a colleague without notes.
How to study for MB-820
A simple four-step plan works for most candidates and fits inside 4–6 weeks:
- Read one domain at a time. Work through the official Microsoft Learn content for that domain before touching anything else. The weights above tell you where to spend the most time.
- Check yourself with untimed practice. Take a free MB-820 Readiness Check on this page. It asks questions from every domain in official proportion, so your domain-by-domain score shows exactly where you are weak.
- Drill the weak domains. Repeat short practice sets on your two weakest areas until both score comfortably above 70%.
- Finish with a timed simulation. Rehearse the real format — 50 questions in 100 minutes — so pacing holds no surprises on test day.
Repeat the cycle until every domain is green. Candidates who follow it usually reach passing level inside 4–6 weeks of part-time study.
Start your free MB-820 practice
The MB-820 practice page offers unlimited free practice weighted to this exact outline. No signup is needed to take a Readiness Check; a free account saves your history so you can watch your domain scores improve over time.
Frequently asked questions about MB-820
What topics are on the MB-820 (Dynamics 365 Business Central Developer Associate) exam?
The exam is weighted to Microsoft's official skills outline and covers: Describe Business Central, Install, develop, and deploy for Business Central, Develop by using AL objects, Develop by using AL, Work with development tools, Integrate Business Central with other applications. MS Exam Lab generates practice questions for each domain so your score reflects real readiness.
How hard is the MB-820 exam?
Intermediate; assumes some hands-on experience with the product. Most candidates study 4–6 weeks of focused, hands-on prep.
How long does it take to study for MB-820?
Plan for roughly 4–6 weeks of consistent study, mixing official Microsoft Learn material with hands-on practice on MS Exam Lab.
What is the pass score for MB-820?
Microsoft uses a scaled score of 700 out of 1000 to pass MB-820. Practice with domain-weighted questions on MS Exam Lab to find and close gaps before test day.
Is there free MB-820 practice on MS Exam Lab?
Yes. MS Exam Lab offers free, unlimited MB-820 practice weighted to the official skills outline, with no paywall and no attempt caps. Timed exam simulations are available on the low-cost Pro tier.
More Microsoft certifications to practice
- MB-800: Dynamics 365 Business Central Functional Consultant
- MB-230: Dynamics 365 Customer Service Functional Consultant Associate
- MB-310: Dynamics 365 Finance Functional Consultant Associate
- AB-210: Dynamics 365 Sales AI Consultant Associate
- MB-330: Dynamics 365 Supply Chain Management Functional Consultant Associate
- MB-500: Dynamics 365: Finance and Operations Apps Developer Associate
- AB-250: Dynamics 365 Contact Center AI Engineer Associate
- GH-300: GitHub Copilot
Last updated June 10, 2025. Sources: compiled from Microsoft's official skills outlines (Microsoft Learn). Maintained and kept current by the MS Exam Lab team.