- Exam Code: C100DBA
- Exam Name: MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4)
- Updated: Sep 13, 2026
- Q & A: 130 Questions and Answers
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| Certification Vendor: | MongoDB |
|---|---|
| Exam Name: | MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) |
| Exam Number: | C100DBA |
| Exam Duration: | 90 minutes |
| Real Exam Qty: | 60-66 |
| Passing Score: | 65% |
| Exam Price: | $150 USD |
| Exam Format: | Scenario-based questions, Multiple choice, Multiple select |
| Available Languages: | English |
| Related Certifications: | MongoDB Certified Professional DBA MongoDB Certified Developer Associate |
| Certificate Validity Period: | 3 years |
| Recommended Training: | M310: MongoDB Security M001: MongoDB Basics M103: Basic Cluster Administration M201: MongoDB Performance |
| Exam Registration: | MongoDB University Certification Portal |
| Sample Questions: | ![]() |
| Exam Way: | Online proctored exam, taken remotely via secure browser |
| Pre Condition: | No mandatory prerequisites; basic knowledge of MongoDB and database administration recommended |
| Official Syllabus URL: | https://learn.mongodb.com/pages/mongodb-associate-database-administrator-exam |
| Section | Weight | Objectives |
|---|---|---|
| Monitoring, Performance and Troubleshooting | 10% | - Diagnostics and resolving common issues - Monitoring tools and metrics - Performance tuning and optimization |
| Sharding and Scalability | 10% | - Query routing and cluster operations - Sharded cluster architecture - Shard keys, chunk management, balancing |
| MongoDB Architecture and Deployment | 20% | - Core concepts, JSON/BSON, data model - Storage engines and server management - Installation and configuration |
| CRUD Operations and Indexing | 20% | - Query optimization and aggregation - Create, Read, Update, Delete operations - Index types, creation, and management |
| Replication and High Availability | 15% | - Deployment and maintenance of replica sets - Replica set architecture and components - Failover, elections, read/write concern |
| Security and Access Control | 15% | - Encryption, auditing, and security best practices - Role-based access control - Authentication mechanisms |
| Backup, Recovery and Maintenance | 10% | - Data consistency and integrity checks - Logical and physical backup methods - Restore procedures and disaster recovery |
The MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) is the official MongoDB exam that leads to the MongoDB Certified DBA Associate certification at the Associate level. Passing it validates your skills against MongoDB standards and proves your qualification to current and future employers. The credential is also connected with related certifications such as MongoDB Certified Developer Associate, MongoDB Certified Professional DBA, so it can serve as a solid step in a broader certification path.
The C100DBA exam has 60-66 questions in total and must be completed within 90 minutes. That leaves only a narrow time budget per item, so train yourself to flag a difficult question, move on, and circle back later instead of getting stuck. A week or two before your test date, run at least one full timed mock exam in the Actual4Dumps desktop or online test engine under the same 90 minutes limit, and repeat until you can finish with a few minutes left for review.
The passing score for the C100DBA exam is 65%, and the official registration fee is $150 USD. Keep in mind that a failed attempt is not discounted — retaking the exam means paying the full fee again — so it is wise not to book your seat until your practice scores sit comfortably above the passing mark. Working through the 130 questions at Actual4Dumps in timed mode is a reliable way to judge when you are truly ready.
MongoDB sets the following requirement for the C100DBA exam: No mandatory prerequisites; basic knowledge of MongoDB and database administration recommended. Eligibility rules can change from time to time, so always confirm the current prerequisites on the official exam page at https://learn.mongodb.com/pages/mongodb-associate-database-administrator-exam before you register.
You can register for the MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) through the following official channels:
The C100DBA exam is delivered as Online proctored exam, taken remotely via secure browser, so review the technical and check-in requirements for that format when you schedule your appointment.
MongoDB recommends the following official training options for the MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4):
Official courses build the theory, and pairing them with the 130 practice questions from Actual4Dumps turns that knowledge into exam-ready answers.
Yes. Actual4Dumps offers a free PDF demo for the MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4), so you can review real sample questions and judge the quality before paying anything. After your purchase, you receive 365 days of free updates — whenever the question pool changes, you get the latest version at no cost. Once that period expires, you can extend your update service at a 50% discount from your member zone.
If you take the C100DBA exam within 60 days of your purchase and do not pass, you can apply for a full refund under our 100% Money Back Guarantee. To qualify, submit a scanned copy of your exam enrollment slip together with your official Score Report (PDF) within 2 days after the exam date, and your claim will be processed within 7 days. Note that the guarantee applies only to the corresponding exam: attempts taken within 3 days of purchase, downloaded-but-unused materials, free resources, and expired orders are not eligible, and the candidate name must match the purchaser name. If you would rather not refund, you can exchange the product for two free exam products of equal value while keeping the update service on your original purchase.
Delivery is instant: your files are available to download right after payment and are also sent to your email within one minute. If nothing arrives within 2 hours, contact our support team (and check your spam folder first). There is no limit on the number of computers you can install the product on.
The MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) is organized into 7 domains. Among the first ones are Replication and High Availability (15%), Backup, Recovery and Maintenance (10%), Security and Access Control (15%), and the remaining domains cover the rest of the official objectives. For the complete topic breakdown with every subtopic, see the full C100DBA exam outline above on this page.
In what format does mongodump creates backup files?
Correct Answer: C 🗳️
What is the maximum size of Index Key Limit and Number of Indexes per collection?
Correct Answer: B 🗳️
Which of the following collections stores authentication credentials in MongoDB?
Correct Answer: B 🗳️
What does the following query do when performed on the posts collection? db.posts.update({_id:l},{Title:This is post with ID 1"})
Correct Answer: D 🗳️
What does the following $slice query return using the following command? db.posts.find( {}, { comments: { $slice: [ -10, 5 ] } } )
Correct Answer: A 🗳️
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