New MongoDB C100DBA Dumps - Get Ready With C100DBA Exam Questions [2026]

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MongoDB C100DBA Exam Syllabus Topics:

Section	Objectives
CRUD Operations	- Data Manipulation 1. Update Operations 2. Delete Operations 3. Insert Operations 4. Read Queries
Indexes	- Index Management 1. Single Field Indexes 2. Index Selection 3. Compound Indexes 4. Query Performance Optimization
Application Administration	- Security and Access Control 1. User Management 2. Authentication 3. Role-Based Access Control 4. Authorization
Replication	- Replica Sets 1. Elections 2. Primary and Secondary Nodes 3. Write Concerns 4. Read Preferences
Sharding	- Cluster Scaling 1. Balancer Operations 2. Shard Keys 3. Chunk Distribution 4. Query Routing
Philosophy and Features	- MongoDB Architecture 1. Collections and Databases 2. High Availability Concepts 3. Document Model 4. Scalability Concepts
Server Administration	- Database Operations 1. Backup and Restore 2. Monitoring 3. Configuration Management 4. Storage Management

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MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) exam certification & C100DBA exam reviews

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MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) Sample Questions (Q116-Q121):

NEW QUESTION # 116
Which of the documents below will be retrieved by the following query? Assume the documents are stored in a collection called " sample " . Check all that apply.
db.sample.find( { " $or " : [ { " a " : { " $in " : [ 3, 10] > }, { " b " : { " $lt " : 2 > > ] > )

A. { " .Jd " :: 1, " a " : 0, " c " :: 0, " b " : 2}
B. { ' ' _Jd " :7, " a " : 8, " c " :1, " b " :7}
C. { ' ' \Jd " :9, " a " : 17, " c " : 1, " b " : 1}
D. { " .Jd " :: 2, " a " : 2, " c " :: 0, " b " : 1}
E. { \Jd " :10, " a " : 3, " c " : 1, " b " : 1}
F. { " .Jd " :6, " a " : 1, " c " :1, " b " :5}
G. { " .Jd " :: 4, " a " : 5, " c " :: 0, " b " : 17}
H. { " .Jd " :: 5, " a " : 3, " c " :: 0, " b " : 12}
I. { " .Jd " :: 8, " a " : 11, " c " : 1, " b " : 0}
J. { ' ' __id " :3, " a " : 4, " c " :0, " b " :14}

Answer: C,D,E,H,I

NEW QUESTION # 117
Given a collection posts as shown below having a document array comments, which of the following command will create an index on the comment author descending?

A. db.posts.createIndex({commerits.$.author " :-l});
B. db.posts.createIndex({comments.author " :-l});
C. db.posts.createIndex({comments.$.author " : {$desc:l > });

Answer: B

NEW QUESTION # 118
Which of the following index would be optimum for the query?
Select all valid. db.test.find( { a : 5, c : 2 })

A. db.test.ensurelndex( { a : 1, c: 1, d: 1, b : 1})
B. db.test.ensurelndex( { c:l, a: 1})
C. db.test.ensurelndex( { a: 1, b :1, c:l, d:l})
D. CH db.test.ensurelndex( { a :1, c:l})

Answer: A,D

NEW QUESTION # 119
Given a collection posts as shown below having a document array comments, which of the following command will create an index on the comment author descending?

A. db.posts.createIndex({
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