MongoDB Quiz Test Online (30 random Questions) 2026

Test your MongoDB knowledge with this 30-minute quiz! Covering fundamental to advanced concepts, this quiz features 30 multiple-choice questions that will challenge your understanding of MongoDB, including data modeling, querying, indexing, and overall database management. Perfect for interview preparation and skill enhancement.

0 votes, 0 avg

You have 30 minutes to complete the quiz. The timer will start when you click the 'Start Quiz' button. Please ensure you are ready before beginning.

Time is up! Your quiz has ended. Your responses have been submitted automatically.

30 Minutes MongoDB Quiz Test Online

Test your MongoDB knowledge with this 30-minute quiz! Covering fundamental to advanced concepts, this quiz features 30 multiple-choice questions that will challenge your understanding of MongoDB, including data modeling, querying, indexing, and overall database management. Perfect for interview preparation and skill enhancement.

1 / 30

1. Which aggregation stage is used to combine multiple documents into a single output document with cumulative calculations?

A) $group

B) $sort

C) $project

D) $match

2 / 30

2. How can you check the structure of a collection's documents?

A) db.collection.explain()

B) db.collection.structure()

C) db.collection.findOne()

D) db.collection.show()

3 / 30

3. Which tool is used to manage sharded clusters in MongoDB?

A) mongostat

B) mongoexport

C) mongotop

D) mongos

4 / 30

4. Which operator in the $group stage is used to count the total number of documents in a group?

A) $sum: 1

B) $count

C) $docs

D) $total

5 / 30

5. What is the maximum number of voting members allowed in a replica set?

A) 10

B) 100

C) 50

D) 7

6 / 30

6. Which of the following is a type of relationship in MongoDB?

A) One-to-Many

B) Many-to-Many

C) All of the above

D) One-to-One

7 / 30

7. Which of the following is true about Time-series Collections?

A) They are used for compressing data

B) They are used for encrypting data

C) They support efficient queries on time-based data

D) They are not optimized for time-series data

8 / 30

8. What is the purpose of the fs.chunks collection in GridFS?

A) To store the actual file data

B) To store metadata about files

C) To compress files

D) To encrypt files

9 / 30

9. Which of the following is true about MongoDB encryption at rest?

A) It uses RSA encryption

B) It uses AES-256 encryption

C) It does not support encryption at rest

D) It uses SSL/TLS encryption

10 / 30

10. What does the db.collection.find() operation do in MongoDB?

A) Inserts data

B) Queries data

C) Deletes data

D) Updates data

11 / 30

11. Which of the following operators is used to match multiple values in MongoDB?

A) $in

B) $or

C) $and

D) $match

12 / 30

12. What is the purpose of the $set operator in MongoDB?

A) To update specific fields

B) To create a collection

C) To replace a document

D) To remove fields from a document

13 / 30

13. Which command can be used to optimize One-to-Many queries involving references?

A) $facet

B) $match

C) $lookup

D) $sort

14 / 30

14. Which command retrieves the total number of documents in a collection?

A) db.collection.numDocuments()

B) db.collection.total()

C) db.collection.count()

D) db.collection.size()

15 / 30

15. How can you monitor slow queries in MongoDB?

A) By setting the mongo.logs file

B) By using the $lookup stage

C) By enabling the query profiler

D) By using the db.collection.index() command

16 / 30

16. MongoDB Atlas provides which type of deployment?

A) On-premises

B) Private cloud only

C) In-memory only

D) Fully managed cloud clusters

17 / 30

17. Which type of index is used to support text search in MongoDB?

A) Text Index

B) Compound Index

C) Geospatial Index

D) Full-text Index

18 / 30

18. What is the purpose of Time-series Collections in MongoDB?

A) To compress data

B) To back up data

C) To store and query time-series data efficiently

D) To encrypt data

19 / 30

19. What is the default installation directory for MongoDB on Windows?

A) C:NoSQLMongoDB

B) C:Program FilesMongoDB

C) C:MongoDBbin

D) C:Program FilesNoSQLMongoDB

20 / 30

20. Which of the following is a valid MongoDB query operator?

A) $search

B) $like

C) $contains

D) $gt

21 / 30

21. What is the default heartbeat interval for replica set members in MongoDB?

A) 10 seconds

B) 30 seconds

C) 1 second

D) 2 seconds

22 / 30

22. What is the purpose of the db.currentOp() command?

A) To display active queries and operations

B) To optimize query execution

C) To create indexes

D) To list all collections

23 / 30

23. Which tool is used to monitor the read and write operations on MongoDB collections?

A) mongoexport

B) mongotop

C) mongostat

D) mongod

24 / 30

24. Which tool is used for querying and running administrative commands interactively?

A) mongotop

B) mongosh

C) MongoDB Compass

D) mongoimport

25 / 30

25. Which operator is used to query embedded documents in MongoDB?

A) $lookup

B) Dot notation

C) $nested

D) $elemMatch

26 / 30

26. What is the purpose of roles in MongoDB?

A) To compress data

B) To define user permissions

C) To back up data

D) To encrypt data

27 / 30

27. What is the primary command to start the MongoDB server?

A) mongodump

B) mongod

C) mongo

D) mongorestore

28 / 30

28. How do you specify a descending sort in the $sort stage?

A) { field: "desc" }

B) { field: -1 }

C) { field: "descending" }

D) { field: 1 }

29 / 30

29. Which MongoDB operator is optimized by a geospatial index?

A) $or

B) $regex

C) $match

D) $geoNear

30 / 30

30. How do you specify an aggregation pipeline in MongoDB?

A) db.collection.query([ pipeline stages ])

B) db.collection.aggregate([ pipeline stages ])

C) db.collection.find([ pipeline stages ])

D) db.collection.filter([ pipeline stages ])

Your score is

The average score is 29%

Rate Your Experience!

Anonymous feedback

Thank you for your feedback! We appreciate your input.

10 Minutes JSON Quiz Test Online

JavaScript Quiz Test Online (30 random Questions)

CSS Quiz Test Online (30 random Questions)

Bootstrap Quiz Test Online (30 random Questions)

10 Minutes HTML Quiz Test Online

SQL Quiz Test Online (30 random Questions)

Related