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MongoDB C100DBA Exam Syllabus Topics:

SectionWeightObjectives
Backup, Recovery and Maintenance10%- Restore procedures and disaster recovery
- Data consistency and integrity checks
- Logical and physical backup methods
Security and Access Control15%- Role-based access control
- Encryption, auditing, and security best practices
- Authentication mechanisms
Monitoring, Performance and Troubleshooting10%- Monitoring tools and metrics
- Diagnostics and resolving common issues
- Performance tuning and optimization
CRUD Operations and Indexing20%- Index types, creation, and management
- Create, Read, Update, Delete operations
- Query optimization and aggregation
Replication and High Availability15%- Failover, elections, read/write concern
- Replica set architecture and components
- Deployment and maintenance of replica sets
Sharding and Scalability10%- Query routing and cluster operations
- Sharded cluster architecture
- Shard keys, chunk management, balancing
MongoDB Architecture and Deployment20%- Installation and configuration
- Core concepts, JSON/BSON, data model
- Storage engines and server management

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MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) Sample Questions (Q22-Q27):

NEW QUESTION # 22
Below is a sample document of "orders" collection

Answer:

Explanation:
$sort


NEW QUESTION # 23
'mongoimport' command is used for

Answer: A


NEW QUESTION # 24
A collection and a document in MongoDB is equivalent to which of the SQL concepts respectively?

Answer: D


NEW QUESTION # 25
Which of the following aggregate commands in MongoDB uses a pipeline approach with the goals of improving the aggregation performance?

Answer: B


NEW QUESTION # 26
What encoded format does MongoDB store documents in?

Answer: A

Explanation:
MongoDB stores records as BSON documents. BSON, short for Binary JSON, is a binary serialization format that preserves the JSON-like document model while supporting a richer set of data types required by database applications. Mongosh commonly displays documents using JavaScript or Extended JSON-like notation, which is why JSON is a tempting distractor, but the native stored representation is BSON. BSON supports types such as ObjectId, dates, binary data, timestamps, Decimal128, 32-bit and 64-bit integers, arrays, embedded documents, and other values that standard JSON does not represent natively. Base64 is an encoding technique often used to render binary data as text and is not MongoDB ' s document storage format.
XML is also unrelated to MongoDB ' s native representation. Understanding BSON is fundamental for database administrators because document-size limits, type comparisons, index keys, serialization behavior, and driver interoperability all depend on BSON semantics. The flexible document model allows fields to contain scalar values, nested documents, and arrays within the same record structure. Therefore the encoded format used by MongoDB to store documents is BSON, making option C correct.
Study Guide reference/topic:MongoDB Architecture and Core Operations - BSON, document structure, data types, and JSON/BSON distinctions.


NEW QUESTION # 27
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