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Access 253 expert-verified C100DEV questions instantly through PDF, Desktop, or Online Test Engine formats. Actual4Labs is your dedicated partner for passing the MongoDB Certified Developer Associate exam on your first attempt in 2026.
| Certification Vendor: | MongoDB |
|---|---|
| Exam Name: | MongoDB Certified Developer Associate Exam |
| Exam Number: | C100DEV |
| Passing Score: | 70% |
| Exam Duration: | 90 minutes |
| Real Exam Qty: | 60 |
| Related Certifications: | MongoDB Certified Database Administrator Associate MongoDB Certified Developer Associate |
| Exam Price: | 150 USD |
| Certificate Validity Period: | 2 years |
| Exam Format: | Multiple Select, Multiple Choice |
| Available Languages: | English |
| Recommended Training: | MongoDB University Developer Path |
| Exam Registration: | MongoDB Certification Portal |
| Sample Questions: | DOWNLOAD DEMO |
| Exam Way: | Online proctored exam |
| Pre Condition: | No formal prerequisite, but recommended knowledge of basic programming and database concepts. |
| Official Syllabus URL: | https://www.mongodb.com/certification |
| Section | Objectives |
|---|---|
| MongoDB Fundamentals | - MongoDB architecture and document model
|
| Data Modeling and Schema Design | - Schema design patterns
|
| Aggregation Framework | - Aggregation pipeline
|
| Indexes and Performance | - Index types
|
| Security and Access Control | - Authentication and authorization
|
| Application Development with MongoDB Drivers | - Driver usage
|
The C100DEV exam is a core requirement for the MongoDB Certified Developer Associate certification at the Associate level. Earning this validates your skills for credentials like MongoDB Certified Database Administrator Associate, MongoDB Certified Developer Associate.
Candidates will face 60 questions and have 90 minutes to complete the exam. This means you need strict time management. We strongly recommend taking timed practice tests to ensure you can maintain a steady pace without rushing when under actual exam time pressure.
The official examination fee is 150 USD, and you must achieve a score of 70% to pass. Since retaking the test requires paying the full fee again, utilizing accurate practice materials for thorough self-assessment beforehand is crucial to protect your investment.
Candidate requirements include: No formal prerequisite, but recommended knowledge of basic programming and database concepts.. Please verify all eligibility details on the official certification page before scheduling your appointment.
Registration is handled through official testing partners. The exam is delivered via Online proctored exam. You can sign up here:
The vendor suggests following official learning paths to build a foundational understanding:
Once you complete your training, use the 253 practice questions from Actual4Labs to refine your exam readiness.
Absolutely. A free PDF demo is available for you to evaluate the quality of our questions. Once purchased, you receive 365 days of free updates. If your access expires, you can renew it at a 50% discount to keep your materials current.
Your C100DEV practice materials are delivered instantly. You can download them right away, and a copy will be sent to your email within one minute (contact support if not received in 2 hours). You can install the software on an unlimited number of computers. We also offer a 100% Money Back Guarantee: if you fail the corresponding exam within 60 days of purchase, you can claim a full refund. To apply, submit your enrollment slip and official Score Report PDF within 2 days after taking the test (processing takes up to 7 days). Note: failures within 3 days of purchase, downloaded but unattempted exams, free materials, and expired orders are excluded. The payer's name must match the candidate's name. Alternatively, you can exchange your order for two free exams of equal value and keep the original product's updates.
The syllabus is divided into 6 main domains. Key areas include "Aggregation Framework", "Security and Access Control", "Application Development with MongoDB Drivers". For a comprehensive breakdown of all measured skills, please review the complete exam outline table provided above.
Question 1
Suppose you are connected to mongod instance that is already running on port 27000 as admin user. You have to create a new user for an application that has the readWrite role. Use the db.createUser() command to create a user for a CRUD application. The requirements for this user are: -> role: readWrite on esmartdata database -> username: esmart -> password: esmart123 Which command should you use?
A. db.createUser({ user: 'esmart', pwd: 'esmart123', roles: [{role: 'read', db: 'esmartdata'}] })
B. db.createUser({ user: 'esmart', pwd: 'esmart123', roles: [{role: 'read+write', db: 'esmartdata'}] })
C. db.createUser({ user: 'esmart', pwd: 'esmart123', roles: [{role: 'readWrite', db: ''}] })
D. db.createUser({ user: 'esmart', pwd: 'esmart123', roles: [{role: 'readWrite', db: 'esmartdata'}] })
Question 2
We can use REGEX in our queries in MongoDB - JavaScript regular expression syntax.
A. True
B. False
Question 3
Which of the following roles provides minimal privileges needed for backing up data in MongoDB?
A. restore
B. update
C. backup
Question 4
Why is high cardinality important when choosing a shard key?
A. Because documents with the same shard key will be placed in the same chunk. This can result in a very big chunk.
B. It's not important. Low cardinality is just as good as high cardinality.
Question 5
You want to execute the following query quite often in your application: db.hotels.aggregate([ { "$match": { "stars": { "$gt": 4.5 } } }, { "$sort": { "stars": 1 } } ]) Your collection doesn't have any additional indexes. Which index should you create to support this query?
A. In this case, the index could not be created.
B. db.hotels.createIndex( { "match": 1 } )
C. db.hotels.createIndex( { "stars": 1 } )
Solutions:
| Question 1 Answer: D | Question 2 Answer: A | Question 3 Answer: C | Question 4 Answer: A | Question 5 Answer: C |
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