Free MongoDB C100DBA Exam Questions

Become MongoDB Certified with updated C100DBA exam questions and correct answers

Page: 1 / 27

Total 134 Questions | Updated On: Oct 29, 2025

Add To Cart

Question 1

Which mongodb tools allow us to work with our data in a human readable format?

A : ngodump

B : ngostat

C : ngoimport

D : ngoexport

Answer: C,D

Question 2

Below is a sample document of 'orders' collection

Other-Image-2821600ab-2cee-4cd9-a321-aa3202108fcf

A : $project

Answer: A

Question 3

What does the output x of the following MongoDB aggregation query result into; db.posts.aggregate( [ { $group: { _id; '$author', x: { $sum: $likes } } } ] )

A : erage of likes on all the posts of an author, grouped by author

B : mber of posts by an author

C : m of likes on all the posts by all the authors

D : m of likes on all the posts by an author, grouped by author

Answer: D

Question 4

'mongoimport' command is used for

A : tch data insertion

B : ne of the above

C : ltiple command import

D : ltiple command insertion

Answer: A

Question 5

You perform the following operation in the shell: db.foo.insert( { } ); What gets inserted?

A : document will be inserted with the same _id as the last document inserted

B : document that matches the collection's existing schema, but with null fields

C : document with an _id assigned to be an Objectld

D : empty document

E : document will be inserted; an error will be raised

Answer: C

Page: 1 / 27

Total 134 Questions | Updated On: Oct 29, 2025

Add To Cart