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MongoDB C100DBA Exam With Confidence Using Practice Dumps

Exam Code:
C100DBA
Exam Name:
MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4)
Certification:
MongoDB Certified DBA Associate
Vendor:
MongoDB
Questions:
132
Last Updated:
Aug 14, 2026
Exam Status:
Stable
MongoDB C100DBA

C100DBA: MongoDB Certified DBA Associate Exam 2025 Study Guide Pdf and Test Engine

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MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) Questions and Answers

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Question 1

Below is a sample document in a given collection test.

{ a : 5, b : 3, c: 2, d : 1 >

Given a compound index { a: 1, b:l, c:l, d:l}, Which of the below query will not use in-memory sorting? Select

all valid.

Options:

A.

db.test.find( { a: 5, b: 3 } ).sort( { c: 1, d : 1 } )

B.

db.test.find( { a: 5, b: 3 } ).sort( { a: 1} )

C.

db.test.find( { a: 5, b: 3 } ).sort( { a: 1, b: 1, c: 1 > )

D.

db.test.find( { a: 5, b: 3 } ).sort( {c: 1 } )

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Question 2

Which of the following is true about sharding?

Options:

A.

Creating a sharded key automatically creates an index on the collection using that key

B.

We cannot change a shard key directly/automatically once it is set up

C.

A sharded environment does not support sorting functionality since the documents lie on various mongod instances

D.

Sharding is enabled at the database level

Question 3

Which of the following is a valid Replica Set configuration if you want:

1-Have 3 copies of everything

2- That RS3 is never primary

2- That RSI and RS2 can be primary?

You had to see the different configurations, RS3 could be hidden or priority 0 (But not a referee because we need

3 replicas), while RSI and RS2 could NOT have priority 0 or be hidden or anything like that

In a 4-member RS RSO , RSI, RS2 and RS3 + Referee, RSO (primary) falls after some write operations that have

replicated RSI and RS2 (but NOT RS3), who can get up as the new primary?

The configuration comes and in it we see that RS2 has a hidden: true (or a priority: 0, (I don't remember)

Options:

A.

ORS1

B.

ORS2

C.

ORS3

D.

O arbiter

E.

RSO

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