Worldwide candidates, one standard. Test4Cram focuses on the C100DBA exam with specialist attention: 174 expert-verified practice questions covering the MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) objectives, comprehensive service, and a written refund policy.
MongoDB C100DBA Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Aggregation Framework | - Aggregation pipeline stages - Data transformation and grouping - Aggregation operators |
| Data Modeling | - Schema design principles - Embedding vs referencing - Relationships in MongoDB |
| MongoDB CRUD Operations | - Querying and filtering documents - Working with documents and BSON types - Insert, update, and delete operations |
| Sharding and Scalability | - Sharded cluster architecture - Balancing and scaling operations - Shard keys and distribution strategy |
| Security | - Authentication and authorization - Encryption at rest and in transit - Role-based access control (RBAC) |
| Replication and High Availability | - Replica set architecture - Read/write concerns - Failover and elections |
| Indexing and Performance Tuning | - Query performance optimization - Index types and usage - Explain plans and diagnostics |
| Backup, Restore, and Operations | - Monitoring and maintenance - Backup strategies and tools - Restore procedures |
C100DBA Exam Details and Our Commitments
The MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) blueprint is organized into these principal domains:
- Replication and High Availability
- MongoDB CRUD Operations
- Data Modeling
Additional domains follow in the full official outline, and our bank spans them all.
MongoDB recommends these official training options:
If formal classes fit your budget and calendar they add structure; otherwise, disciplined self-practice with a current bank covers the same ground.
A team of professional IT experts and certified trainers who focus on this exam field β and who keep the C100DBA bank under constant updating so every candidate prepares smoothly. Every answer is expert-verified, and you can check the accuracy yourself with a free demo before buying. The online test engine deserves special mention: it simulates the actual test environment, supports Windows, Mac, Android, and iOS, carries no installation limits, and lets you practice without limits of time or location β a smooth preparation process for office workers who cannot attend classes.
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MongoDB specifies the following prerequisites for the MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4): Recommended practical experience administering MongoDB deployments (approximately 6+ months) and familiarity with MongoDB 4.4 features..
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MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) Sample Questions:
Which of the following is true of the mechanics of replication in MongoDB? Check all that apply.
- A. Operations on the primary are recorded in a capped collection called the oplog
- B. Clients read from the nearest member of a replica ser by default
- C. Members of a replica set may replicate data from any other data-bearing member of the set by default
Correct Answer: A π³οΈ
Which of the following commands will return all the posts with number of likes greater than 100 and less than
200, both inclusive?
- A. db.posts.find({ likes : { $gt : 100 , $lte : 200 } } );
- B. db.posts.find({ likes : { $gte : 100 , $lte : 200 } } );
- C. db.posts.find({ likes : { $gt : 100, $lt : 200 > > );
- D. db.posts.find({ likes : { $gte : 100, $lt : 200 } } );
Correct Answer: B π³οΈ
Consider the following example document from the sample collection. All documents in this collection have the same schema.
Which of the following queries will replace this with the document.
- A. db.sample.update( { " _id " : 3 } , { " $set " : { " _id " : 7 , " c " : 4 > > )
- B. db.sample.update( { " _id " : 3 > , { " _id " : 7 , " c " : 4 , { " $unset " : [ " a " , " b " ] } } )
- C. db.sample.update( { " _id " : 3 > , { " _id " : 7 , " c " : 4 > )
- D. db.sample.update( { " _id " : 3 > , { " _id " : 7 , " c " : 4 > , { " justOne " : true > ) / # This operation cannot be done with a single query.
Correct Answer: B π³οΈ
Consider an inventory collection that contains these documents:
{ " _id " : 1, " product " : " x-small box " , " colors " : [ " brown " , " black " , " white " ], " qty " : 50 }
{ " _id " : 2, " product " : " small box " , " colors " : [ " brown " , " white " ], " qty " : 60 }
{ " _id " : 3, " product " : " medium box " , " colors " : [ " black " , " grey " , " white " ], " qty " : 45 }
{ " _id " : 4, " product " : " large box " , " colors " : [ " grey " ], " qty " : 50 }
{ " _id " : 5, " product " : " x-large box " , " colors " : [ " grey " , " white " ], " qty " : 10 } What result set does the following query return?
db.inventory.find({
$or: [
{ " product " : " x-small box " },
{
$and: [
{ " qty " : { $ne: 50 } },
{ " colors " : { $nin: [ " brown " ] } }
]
}
]
})
- A. Documents _id:1 and _id:3.
- B. Documents _id:3 and _id:5.
- C. Documents _id:1, _id:2, _id:3, and _id:5.
- D. Documents _id:1, _id:3, and _id:5.
Correct Answer: D π³οΈ
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What does the totalCreated field mean in the output of the db.serverStatus().connections command?
> db.serverStatus().connections
{
" current " : 4,
" available " : 51196,
" totalCreated " : 5,
" active " : 2,
" threaded " : 4,
" exhaustIsMaster " : 1,
" exhaustHello " : 0,
" awaitingTopologyChanges " : 1
}
- A. The total number of database connections at the moment.
- B. The number of connections since the server was set up.
- C. The number of connections since the server was started.
- D. The number of closed connections in the server ' s history.
Correct Answer: C π³οΈ
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