MongoDB Certified Associate Developer

Measured data

MongoDB logo

MongoDB Certified Associate Developer

MongoDB-DEV

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.

Exam complexity score2.1/10Gentle · measured across 60 bank questions
  • 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.

DomainBlueprintQuestionsSingleMultiInteractiveComplexity
Aggregations20%124442.0/10Gentle
CRUD Operations20%124442.0/10Gentle
Data Access (Driver usage)15%93332.0/10Gentle
Data Modeling15%93332.0/10Gentle
Indexes15%93332.2/10Gentle
Performance15%93332.3/10Gentle

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.