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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)
Vendor:
Questions:
132
Last Updated:
Dec 14, 2025
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

Question 1

As per the aggregation pipeline optimization concepts, if you have a $sort followed by a $match:

Options:

A.

Providing these parameters in any order does not impact the performance

B.

$sort moves before $match

C.

MongoDB does not do any movements by default and will use the order provided

D.

$match moves before $sort

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Question 2

Consider that the posts collection contains an array called ratings which contains ratings given to the post by various users in the following format:

Which of the following query will return all the documents where the ratings array contains elements that in some combination satisfy the query conditions?

Options:

A.

db.inventory.find( { ratings: { $elemMatch: { $gte: 3, $lte: 6 } } } )

B.

db.inventory.find( { ratings: { $elemMatch: { $gt: 3, $lt: 6 }

C.

db.inventory.find( { ratings: { ratings.$: { $gt: 5, $lt: 9 } } } )

D.

db.inventory.find( { ratings: { ratings: { $gt: 5, $lt: 9 } } } )

Question 3

What is the defau size of a GridFS chunk?

Options:

A.

255 K

B.

1 MB

C.

16 MB

D.

2 MB