Practice C100DBA Exam Online

Question 1

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

A : mongodump

B : mongostat

C : mongoimport

D : mongoexport

Answer: C,D

Question 2

Which of the following commands can cause the database to be locked?

A : All of the above

B : Inserting data

C : Map-reduce

D : Issuing a query

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

B : Number of posts by an author

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

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

Answer: D

Question 4

Which of the following collections stores authentication credentials in MongoDB?

A : test.users

B : local.users

C : system.users

D : users.users

Answer: C

Question 5

'mongoimport' command is used for

A : Batch data insertion

B : None of the above

C : Multiple command import

D : Multiple command insertion

Answer: A

Name:	MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4)
Exam Code:	C100DBA
Certification:	MongoDB Certified DBA Associate
Vendor:	MongoDB
Total Questions:	134
Last Updated:	Apr 22, 2024

MongoDB C100DBA