MongoDB Associate Database Administrator Exam Practice Test

140 questions available

Build your confidence for MongoDB Associate Database Administrator Exam. Practice the concepts, understand the answers, and strengthen your knowledge one question at a time.

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Certification exam
53 Exam questions
1 hour 15 minutes Time Limit
Associate Level
Your practice
140 Practice questions
2 hours 20 minutes Practice Time
Try 5 free questions
No account needed. A free account includes 20 questions for this exam.
The bar to clear 60 Published passing score for this certification.
Explore exam topics Official objectives from MongoDB
MongoDB140 practice questions
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Exam overview and details

The MongoDB Associate Database Administrator (DBA) certification validates foundational expertise in administering MongoDB databases, with a strong emphasis on modern cloud deployments via MongoDB Atlas. This professional credential demonstrates competency in core operational areas including deployment architecture, data modeling, performance optimization, security implementation, and operational resilience. Certified professionals prove their ability to manage MongoDB deployments effectively, implement proper indexing strategies, design appropriate data models, configure robust security controls, and execute reliable backup and recovery procedures. The certification aligns with industry demand for database professionals who can leverage MongoDB's document model while ensuring scalability, availability, and security in production environments. Earning this certification signals to employers a verified, practical understanding of MongoDB administration that goes beyond theoretical knowledge, making candidates more competitive for roles involving NoSQL database management, DevOps integration, and cloud-native data infrastructure.

Sample Questions

Choose an answer and explore the explanation to see how practice works.

Sharding and Distributed Operations

A query against a sharded collection omits the shard key and filters only on status. What is the likely routing behavior?

Data Modeling

A financial app must show monthly statements exactly as originally issued while transactions may later be corrected. What model preserves statement history best?

Replication and High Availability

A secondary is used for backups. The backup job causes it to lag badly, and elections become unstable when other nodes are under load. What configuration can reduce election impact?

Sharding and Distributed Operations

An unsharded collection in a sharded database is much larger than expected and all traffic goes to one shard. Why?

Indexes and Query Performance

A text search feature ranks support articles by term relevance. A developer asks why the existing compound B-tree index on title and body is not used for text scoring. What should the DBA say?

Career Opportunities & Salary

Median salary: $104,620– Database Administrators

Source: BLS Occupational Employment and Wage Statistics, May 2025 -- Database Administrators (SOC 15-1242), US national. Occupation median, not a certification salary. (2025)

Database Administrators

Exam insights and study advice

In today's data-driven landscape, MongoDB is a leading NoSQL database powering modern applications. This certification provides tangible industry recognition, differentiating you in a competitive job market. It validates your skills to potential employers, often leading to career advancement, increased earning potential, and opportunities in high-growth areas like cloud engineering, site reliability engineering (SRE), and backend development. Holding an official MongoDB certification demonstrates a commitment to professional development and mastery of a critical technology stack, enhancing your credibility and opening doors to roles requiring proven database administration expertise.

What this exam covers

Use the published domain weights to plan your study. Practice results do not predict your certification exam score.

01Atlas and Cloud Deployments

17%

02Data Modeling

17%

03Indexes and Performance

17%

04MongoDB Basics and CRUD

17%

05Security and Compliance

17%

06Backup, Recovery, and Monitoring

15%

Exam Details C100DBA | $150 USD | 1 hour 15 minutes

Exam Code C100DBA
Vendor MongoDB
Exam Cost $150 USD
Passing Score 60
Time Limit 1 hour 15 minutes
Exam questions 53
Question TypesMultiple Choice, Multiple Select
Retake Policy Full exam fee required for retake.
Exam Format Linear (online proctored)
Online Proctoring Available
Available In
English

Frequently Asked Questions

What is the primary focus of the MongoDB Associate DBA exam compared to the Developer exam?

How important is hands-on experience with MongoDB Atlas for this exam?

What are the key security topics I must master?

How does the exam approach data modeling and indexing?

What is the recommended study path to prepare for this exam?