Question

Which of the following method returns one document?

(a) findOne()

(b) findOne1()

(c) selectOne()

(d) all of the mentioned

The question was asked during a job interview.

I'd like to ask this question from Read Operations topic in portion MongoDB CRUD Concepts and Operation of MongoDB

Answer 1

Correct choice is (a) findOne()

For explanation: MongoDB provides a db.collection.findOne() method as a special case of find() that returns a single document.