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.
Results
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#1. Create or insert operations add new documents to a collection. If the collection does not currently exist, insert operations will create the collection.
#2. The difference between $push and $addToSet is:
#3. Point out the wrong statement.
#4. What does the following MongoDB command return? db.posts.find( { likes : { $gt : 100 }, likes : { $lt : 200 } } );
#5. Which language is MongoDB written in?
#6. What is default port for MongoDB server?
#7. By default, db.collection.explain() runs in ___________ verbosity mode.
#8. What command will you use to list all available databases?
#9. With the _______ storage engine, MongoDB uses memory-mapped files to store data.
#10. Point out the correct statement.
#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. ____________ returns information on the query plan for aggregate function.
#13. You can inspect __________ to check the amount of mapped memory that mongod is using
#14. MongoDB reports its triggered page faults as the total number of page faults in ________ second.
#15. What does the following query do when performed on the posts collection? db.posts.update({_id:1},{Title:This is post with ID 1″})
#16. What is the output of the following program?
#17. The memory usage statuses metrics of the _________ output can provide insight into MongoDB’s memory use.
#18. What is a replica set node which does not maintain its own data but exists only for voting purpose called?
#19. Aggregation Pipelines have a limit of:
#20. Which of following command will return all items from inventory collection
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