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MongoDB C100DBA Exam Questions

Exam Name: MongoDB Certified DBA Associate Exam
Exam Code: C100DBA
Related Certification(s): MongoDB Certified DBA Associate Certification
Certification Provider: MongoDB
Actual Exam Duration: 90 Minutes
Number of C100DBA practice questions in our database: 132 (updated: Jan. 12, 2025)
Expected C100DBA Exam Topics, as suggested by MongoDB :
  • Topic 1: Philosophy and Features: This topic of the C100DBA exam, assesses MongoDB Database Administrators on their understanding of MongoDB's core characteristics, its differences from RDBMS databases, access and administration methods, and the concept of sharding. Mastery here ensures a strong foundational knowledge of MongoDB philosophy.
  • Topic 2: CRUD: This topic of the MongoDB Certified DBA Associate exam evaluates administrators on creating, reading, updating, and deleting documents. It measures the ability to handle structured document insertion, updates, upserts, deletions, and query operations. Proficiency in CRUD operations is vital for daily MongoDB database management.
  • Topic 3: Indexes: The C100DBA exam tests knowledge of aspiring MongoDB Database Administrators on optimizing query performance through indexing. Administrators must identify appropriate indexes, understand explain plan outputs, and resolve index-related errors. Effective indexing skills enhance MongoDB database efficiency and performance.
  • Topic 4: Server Administration: This topic of the MongoDB Certified DBA Associate exam focuses on essential server management tasks. MongoDB Database Administrators must demonstrate proficiency in starting, stopping, and configuring mongod, using mongosh, and managing replica sets. Competence in server administration is crucial for maintaining MongoDB database operations.
  • Topic 5: Monitoring: This topic examines the ability to monitor database performance and health. MongoDB Database Administrators should identify alerts, use currentOp, monitor active operations, and manage storage effectively. Strong monitoring skills ensure the MongoDB database runs smoothly and efficiently.
  • Topic 6: Security: The topic assesses the ability to secure MongoDB environments. MongoDB Database Administrators attempting the C100DBA exam must understand TLS, authentication, role-based authorization, encryption, and audit logging. Robust security skills protect MongoDB data integrity and ensure compliance with security standards.
  • Topic 7: Replication: It evaluates understanding of replication processes. MongoDB Database Administrators should grasp the roles of primary and secondary nodes, read preferences, rs.status, write concern, and elections. Effective replication management ensures high availability and data redundancy.
  • Topic 8: Backup and Recovery: This topic of the C100DBA exam, tests the ability to create backups of replica sets. MongoDB Database Administrators need to know backup procedures to safeguard data and ensure recovery in case of failures. Proficiency here is critical for maintaining data continuity and integrity.
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Noemi

10 days ago
The exam tests your knowledge of data modeling best practices. Be prepared to choose appropriate document structures for different scenarios and understand the implications of embedding vs. referencing documents.
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Alison

17 days ago
Grateful for Pass4Success's help in passing the MongoDB DBA exam. Their questions were on point!
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Nickole

24 days ago
Performance tuning questions are common. You may need to identify bottlenecks in MongoDB operations and suggest improvements. Study how to use mongostat, mongotop, and the database profiler to diagnose performance issues.
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Laura

1 months ago
Thrilled to announce that I passed the MongoDB Certified DBA Associate Exam! The practice questions from Pass4Success were invaluable. One tricky question was about the different types of indexes and how they affect query performance, especially when using text indexes.
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Yasuko

1 months ago
MongoDB's aggregation framework is a significant part of the exam. Expect to write and analyze multi-stage aggregation pipelines. Focus on understanding $match, $group, and $project stages, as well as how to optimize aggregation performance.
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Thurman

1 months ago
Pass4Success nailed it with their MongoDB exam prep. Passed with flying colors!
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Zana

2 months ago
Backup and recovery scenarios are featured in the exam. You might need to describe the steps for performing point-in-time recovery or explain the differences between full and incremental backups. Review mongodump and mongorestore utilities.
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Nickolas

2 months ago
I just passed the MongoDB exam, and Pass4Success practice questions were a lifesaver. There was a question on sharding that asked about the implications of using hashed vs. ranged shard keys. I wasn't entirely sure, but I still passed.
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Latrice

2 months ago
Authentication and authorization are important security topics. Be ready to answer questions about role-based access control (RBAC) and how to set up user privileges. Study the different built-in roles and how to create custom roles.
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Terrilyn

2 months ago
I successfully passed the MongoDB Certified DBA Associate Exam, and the practice questions from Pass4Success were a big help. One question that caught me off guard was about the different types of backups and their impact on server performance. It was a tough one.
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Desirae

2 months ago
MongoDB certification in the bag! Couldn't have done it without Pass4Success's relevant questions.
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Jeffrey

3 months ago
Happy to share that I passed the MongoDB exam! The Pass4Success practice questions were really helpful. There was a question on CRUD operations that asked about the differences between updateOne and updateMany. I wasn't 100% confident, but I still managed to get through.
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Gianna

3 months ago
The exam covers indexing strategies in depth. You'll likely encounter questions about creating compound indexes and analyzing query performance. Practice using explain() to optimize queries and understand index intersection.
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Matthew

3 months ago
I passed the MongoDB Certified DBA Associate Exam, thanks in part to the practice questions from Pass4Success. One challenging question was about the oplog size in replication and how it affects the performance and recovery of a replica set. I had to think hard about that one.
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Freeman

4 months ago
Aced the MongoDB exam! Pass4Success materials were a lifesaver for quick prep.
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Toi

4 months ago
Sharding is a key topic on the exam. Expect questions about shard key selection and its impact on data distribution. Make sure you understand how to choose effective shard keys for different data models and query patterns.
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Iesha

4 months ago
Just cleared the MongoDB exam, and I have to say, Pass4Success practice questions were instrumental. There was a tricky question on sharding that asked about the best shard key for a collection with a high write load. I wasn't entirely sure of the answer, but I managed to pass.
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Jesusita

4 months ago
Just passed the MongoDB Certified DBA Associate Exam! Be prepared for questions on replication. You might need to configure replica sets and understand their behavior during failover scenarios. Study primary-secondary relationships and election processes.
upvoted 0 times
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Antonio

4 months ago
I recently passed the MongoDB Certified DBA Associate Exam, and the Pass4Success practice questions were a huge help. One question that stumped me was about the different types of indexes and their impact on query performance. Specifically, it asked how a compound index could be used to optimize a query that filters and sorts on multiple fields.
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Shalon

5 months ago
Just passed the MongoDB Certified DBA Associate Exam! Thanks Pass4Success for the spot-on practice questions.
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Twanna

6 months ago
Passed the MongoDB DBA Associate Exam with flying colors! Aggregation pipeline questions were challenging. Practice designing multi-stage pipelines and understand when to use $lookup and $graphLookup. Data modeling scenarios were also common – be ready to choose appropriate schema designs for different use cases. Lastly, review MongoDB Cloud offerings and their features. Thanks to Pass4Success for providing relevant practice questions that helped me prepare in a short time!
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Jenifer

7 months ago
Just passed the MongoDB Certified DBA Associate Exam! Be ready for questions on sharding configuration. You might encounter scenarios where you need to determine the best shard key for a given data distribution. Study the impact of different shard key choices on query performance and data distribution. Thanks to Pass4Success for their spot-on practice questions that helped me prepare efficiently!
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Esteban

8 months ago
Successfully completed the MongoDB DBA Associate Exam! Performance tuning was a major focus. Expect to analyze and optimize slow queries using explain() output. Brush up on query plans and index usage. Security questions were also prominent. Study authentication methods and role-based access control. Don't forget about backup and recovery strategies – know the differences between various backup methods. Pass4Success's exam materials were invaluable for covering these topics efficiently.
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Frederick

8 months ago
Just passed the MongoDB Certified DBA Associate Exam! One tricky area was index creation and management. Expect questions on choosing optimal indexes for specific queries. Study B-tree and text indexes thoroughly. The exam also focused heavily on replication concepts. Be prepared to troubleshoot replica set issues and understand failover processes. Sharding was another key topic – know how to design effective shard keys. Thanks to Pass4Success for the spot-on practice questions that helped me prepare quickly!
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Free MongoDB C100DBA Exam Actual Questions

Note: Premium Questions for C100DBA were last updated On Jan. 12, 2025 (see below)

Question #1

Which features of relational database management systems were deliberately omitted in MongoDB and help us to obtain horizontal scalability? Check all that apply.

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Correct Answer: A, B

Question #2

Suposse tou have the following collection with only 2 documents:

If you run an aggregation query and use { $unwind: "$traits" } as the first stage, how many documents will be passed to the next stage of the aggregation pipeline?

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Correct Answer: B

Question #3

What is the equivalent command in MongoDB for the following SQL query?

SELECT * FROM posts WHERE author like "%john%"

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Correct Answer: A

Question #4

What tool do you use if you want to extract a CSV from mongo?

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Correct Answer: A

Question #5

Consider a collection posts which has fields: Jd, post_text, post_author, post_timestamp, post_tags etc. Which of the following query retrieves ONLY the key named post_text from the first document retrieved?

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Correct Answer: A

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