MongoDB Online Quiz

mongodbquiz

It’s time to test the MongoDB skills after learning all the MongoDB tutorials. This free MongoDB Quiz will help you prepare for the interview with MongoDB.

MongoDB Quiz is not just a test, but a parameter that will measure your knowledge and capabilities, especially for you. So, if you want to check the basics please refer to our MongoDB tutorial series before taking this advanced MongoDB assessment test.

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#1. Point out the correct statement.

#2. What is default port for MongoDB server?

#3. Which of the following is correct about MongoDB?

#4. What does the following query do when performed on the posts collection? db.posts.update({_id:1},{Title:This is post with ID 1″})

#5. What command will you use to list all available databases?

#6. Which of the following command inside aggregate command is used in MongoDB aggregation to filter the documents to pass only the documents that match the specified condition(s) to the next pipeline stage.

#7. What does the following MongoDB command return? db.posts.find( { likes : { $gt : 100 }, likes : { $lt : 200 } } );

#8. What function do you use to format the query results in mongo shell?

#9. Which of following command will return all items from inventory collection

#10. Which of the operator is used to access the query field of documents within system.profile?

#11. The _______ operator can be used to identify an element in the array to be updated without explicitly specifying the position of the element.

#12. The memory usage statuses metrics of the _________ output can provide insight into MongoDB’s memory use.

#13. The difference between $push and $addToSet is:

#14. ____________ returns information on the query plan for aggregate function.

#15. What is a replica set node which does not maintain its own data but exists only for voting purpose called?

#16. By default, db.collection.explain() runs in ___________ verbosity mode.

#17. What is the output of the following program?

#18. Which language is MongoDB written in?

#19. Aggregation Pipelines have a limit of:

#20. Point out the wrong statement.

Finish

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