MongoDB Certified Developer Associate: Mock Examination & Study Guide
This mock examination is designed for software engineers and application developers preparing for the MongoDB Certified Developer Associate certification exam (exam code commonly referenced as C100DEV). This vendor credential validates hands-on proficiency in building applications with MongoDB, covering core developer skills including CRUD operations, aggregation pipelines, data modeling, indexing, and Atlas application services . The mock exam consists of 60 multiple-choice and "check all that apply" questions to be completed within 90 minutes, reflecting the official exam format reported by MongoDB Community . A passing score of 65% is recommended as a readiness benchmark based on widely cited study resources, though candidates should note that MongoDB does not publicly publish a fixed passing threshold and provides score breakdowns by topic area post-exam . Questions are distributed across the five exam domains according to the weightings used in community study guides: CRUD Operations (30%), Aggregation (25%), Data Modeling (20%), Indexes (15%), and Atlas Tools (10%) . Scenario-based items address common exam pitfalls such as confusing $push with $addToSet, misapplying compound index field order (ESR rule), incorrectly placing $match late in an aggregation pipeline, and overlooking the $unwind requirement when using $lookup for one-to-many relationships . Answer rationales reference official MongoDB documentation and the MongoDB University Developer Learning Path, which offers free preparatory courses and a practice exam . Mock Exam Blueprint (Content Distribution): Domain Percentage of Questions CRUD Operations 30% Aggregation Pipeline 25% Data Modeling 20% Indexes & Performance 15% Atlas Tools (Search, Charts, Data API, Triggers) 10%
Document information
- Uploaded on
- October 30, 2026
- Number of pages
- 61
- Written in
- 2026/2027
- Type
- Exam (elaborations)
- Contains
- Questions & answers
