Measured data
MongoDB Certified Associate Developer
We scored 60 real MongoDB Certified Associate Developer exam questions 1-10 on question complexity and broke the result down by exam domain.
- 60 questions scored
- 6 domains
- 2.1/10 overall complexity
Complexity by exam domain
Higher scores mean more demanding question formats. The exam score is computed over the whole bank, not averaged across domains.
- Aggregations12 questions · complexity 2.0/10 · Gentle
33% multi-select · 0% scenario · 33% interactive
- CRUD Operations12 questions · complexity 2.0/10 · Gentle
33% multi-select · 0% scenario · 33% interactive
- Data Access (Driver usage)9 questions · complexity 2.0/10 · Gentle
33% multi-select · 0% scenario · 33% interactive
- Data Modeling9 questions · complexity 2.0/10 · Gentle
33% multi-select · 0% scenario · 33% interactive
- Indexes9 questions · complexity 2.2/10 · Gentle
22% multi-select · 22% scenario · 33% interactive
- Performance9 questions · complexity 2.3/10 · Gentle
33% multi-select · 11% scenario · 33% interactive
Full per-domain breakdown
Blueprint weight, bank size and question format mix for every domain of the exam.
| Domain | Blueprint | Questions | Single | Multi | Interactive | Complexity |
|---|---|---|---|---|---|---|
| Aggregations | 20% | 12 | 4 | 4 | 4 | 2.0/10Gentle |
| CRUD Operations | 20% | 12 | 4 | 4 | 4 | 2.0/10Gentle |
| Data Access (Driver usage) | 15% | 9 | 3 | 3 | 3 | 2.0/10Gentle |
| Data Modeling | 15% | 9 | 3 | 3 | 3 | 2.0/10Gentle |
| Indexes | 15% | 9 | 3 | 3 | 3 | 2.2/10Gentle |
| Performance | 15% | 9 | 3 | 3 | 3 | 2.3/10Gentle |
How the score is calculated
The formula is fixed and public, so anyone can reproduce these numbers from the same bank.
Every question in the MongoDB Certified Associate Developer bank is measured on four signals that can be read directly from the database. Each signal is expressed as a share of the questions in the domain, and the four shares are combined with fixed weights:
- Multi-select questions (40% weight). Items with more than one correct answer. The candidate has to find all of them, which is the single hardest format in the bank.
- Scenario questions (30% weight). Questions longer than 150 characters, which describe a situation instead of a definition and therefore test reasoning rather than recall.
- Interactive questions (20% weight). Items that require reading code or a configuration snippet.
- Deep explanations (10% weight). Questions whose explanation runs past 300 characters, which signals a concept with real nuance behind it.
The combined share is multiplied by ten to produce a 1-10 score. The exam-level score is computed over the whole bank rather than averaged across domains, so a small domain cannot distort the total. Figures on this page are recomputed from the live bank on every crawl.
Data set: Certilum MongoDB Certified Associate Developer Foundation question bank, 60 questions, 6 domains. Published by CERTILUM. This is Certilum’s own measurement of its own question bank and is not an official MongoDB statistic.
- Questions analysed
- 60
- Exam domains
- 6
- Hardest domain
- Performance (2.3)
- Most approachable domain
- Aggregations (2.0)
- Question mix
- 20 single · 20 multi · 20 interactive
- Measured on
- Foundation
Frequently asked questions
What our MongoDB Certified Associate Developer complexity numbers mean and how they are produced.