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Free MongoDB C100DBA Practice Exam with Questions & Answers | Set: 2

Questions 11

Using an arbiter allows one to easily ensure an odd number of voters in replica sets. Why is this important?

Options:
A.

To help in disaster recovery

B.

To protect agains network partitions

C.

To enable certain read preference settings

D.

To add greather redundancy

E.

For more efficient backup operations

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Questions 12

Which of the following operator can be used to limit the number of documents in an array field of a document after an update is performed?

Options:
A.

$arrayLimit

B.

$push along with $each, $sort and $slice

C.

$removeFromSet

D.

None of the above

Questions 13

What tool would you use if you want to save a gif file in mongo?

Options:
Questions 14

What tool do you use to see if you have a problem in the consumption of disk I / 0?

Options:
Questions 15

In what format does mongodump creates backup files?

Options:
A.

BSON

B.

JSON

C.

SOAP

D.

XML

Questions 16

Which of the following is true about aggregation framework?

Options:
A.

Each aggregation operator need to return atleast one of more documents as a result

B.

the aggregate command operates on a multiple collection

C.

A single aggregation framework operator can be used more than once in a query

D.

Pipeline expressions are stateless except accumulator expressions used with $group operator

Questions 17

Which of the following operators is used to updated a document partially?

Options:
A.

$set

B.

$update

C.

$project

D.

$modify

Questions 18

Which of the following operator can be used to control the number of items of an array that a query returns?

Options:
A.

$ elemMatch

B.

$slice

C.

$

D.

MongoDB does not support partial retrieval of items from an array

Questions 19

What is the defau size of a GridFS chunk?

Options:
A.

255 K

B.

1 MB

C.

16 MB

D.

2 MB

Questions 20

Which is the correct order (lowest to highest) in which MongoDB compares the BSON types?

Options:
A.

Number, Null, String and Object

B.

Null, Number, Object and String

C.

Null, Number, String and Object

D.

String, Null, Number and Object

Exam Code: C100DBA
Certification Provider: MongoDB
Exam Name: MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4)
Last Update: Jul 15, 2025
Questions: 132

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