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| Certification Vendor: | MongoDB |
|---|---|
| Exam Name: | MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) |
| Exam Number: | C100DBA |
| Exam Format: | Multiple Choice, Multiple Response |
| Passing Score: | 490/600 |
| Available Languages: | English |
| Exam Duration: | 90 minutes |
| Related Certifications: | MongoDB Certified Developer Associate |
| Certificate Validity Period: | Not officially specified |
| Exam Price: | $150 USD |
| Real Exam Qty: | 60-66 |
| Sample Questions: | MongoDB C100DBA Sample Questions |
| Exam Way: | Online proctored or authorized testing center |
| Pre Condition: | Recommended knowledge of fundamental database concepts, basic system administration, and basic JavaScript. No mandatory prerequisite exam. |
| Official Syllabus URL: | https://learn.mongodb.com/pages/mongodb-associate-database-administrator-exam |
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MongoDB Certified DBA Associate Exam (C100DBA) is based on MongoDB 4.4, which is the latest version of this database. C100DBA exam is designed to test the skills and knowledge of professionals in various areas of database administration, such as installation, configuration, security, performance tuning, backup, and recovery. C100DBA Exam consists of multiple-choice questions and lasts for 90 minutes.
NEW QUESTION # 42
Below is a sample document of " orders " collection
Answer:
Explanation:
$project
NEW QUESTION # 43
What attribute of the oplog ensures consistency in a replicated dataset?
Answer: C
Explanation:
MongoDB describes oplog operations as idempotent. An idempotent operation can be reapplied without causing an unintended cumulative change beyond the intended final state. This property is important for replication and recovery because secondary members copy and apply oplog entries, and operational processes may need to reason safely about replay. MongoDB can represent client write activity in oplog-friendly forms specifically to preserve appropriate replication semantics. Natural ordering is relevant to the capped collection structure of the oplog, but it is not the attribute identified by the question as providing safe repeatable application behavior. Concurrency control governs simultaneous operations and storage-engine coordination rather than the defining form of oplog entries. Flow control is a replica-set mechanism that can regulate the primary ' s write throughput when replication lag threatens majority-commit behavior; it does not make individual oplog entries safe to replay. The idempotent nature of oplog operations supports deterministic replication and contributes to consistent secondary state as operations are applied in sequence. Therefore the correct attribute among the options is Idempotent, making D correct.
Study Guide reference/topic:Cluster Reliability and Data Resilience - the oplog, idempotent replication operations, replay, and consistency.
NEW QUESTION # 44
Which features of relational database management systems were deliberately omitted in MongoDB and help us to obtain horizontal scalability? Check all that apply.
Answer: B,C
NEW QUESTION # 45
By default, the MongoDB cursor in mongo shell is configured to return how many documents? To get the next set of documents, which command is used?
Answer: B
NEW QUESTION # 46
Mongodb does provide high availability via which option?
Answer: B
NEW QUESTION # 47
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