Explore topic-wise MCQs in Mongodb.

This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Mongodb knowledge and support exam preparation. Choose a topic below to get started.

1.

Which of the following is not a projection operator?

A. $slice
B. $elemMatch
C. $
D. None of the mentioned
Answer» E.
Discussion
2.

To suppress the _id field from the result set, specify _________ in the projection document.

A. _id: 1
B. _id: 0
C. _id: it
D. None of the mentioned
Answer» C. _id: it
Discussion
3.

Which of the following functionality is used for aggregation framework?

A. $match
B. $project
C. $projectmatch
D. All of the mentioned
Answer» C. $projectmatch
Discussion
4.

Which of the following query selects documents in the records collection that match the condition { “user_id”: { $lt: 42 } }?

A. db.records.findOne( { “user_id”: { $lt: 42 } }, { “history”: 0 } )
B. db.records.find( { “user_id”: { $lt: 42 } }, { “history”: 0 } )
C. db.records.findOne( { “user_id”: { $lt: 42 } }, { “history”: 1 } )
D. db.records.select( { “user_id”: { $lt: 42 } }, { “history”: 0 } )
Answer» C. db.records.findOne( { “user_id”: { $lt: 42 } }, { “history”: 1 } )
Discussion
5.

Which of the following is the second argument to projection?

A. findOne()
B. findOne1()
C. selectOne()
D. find()
Answer» E.
Discussion
6.

Which of the following method returns one document?

A. findOne()
B. findOne1()
C. selectOne()
D. all of the mentioned
Answer» B. findOne1()
Discussion
7.

In aggregation pipeline, the _______ pipeline stage provides access to MongoDB queries.

A. $catch
B. $match
C. $batch
D. All of the mentioned
Answer» C. $batch
Discussion
8.

The order of documents returned by a query is not defined unless you specify a ______

A. sortfind()
B. sortelse()
C. sort()
D. none of the mentioned
Answer» D. none of the mentioned
Discussion