Which of the following commands will return all the posts with a number of likes greater than 100 and less than 200, including the limit values ?

Which statement is valid?

How can you create index on a particular key in MongoDB?

Which is not an aggregation operation? (choose all that apply)

The following statement is most suitable for aggregation stage: 'Used to select fields from the collection while aggregation'.

Which statement best describes $allElementsTrue?

In a sharded replicas set environment with multiple mongos servers, which would decide the mongos failover?

Choose the best description for the query below db.foo.find({ $text:{ $search:

Describe the output of the following mongo shell JavaScript: Object.keys(db.collection.findOne())

What is command specifying for database path ?

Asume a users collections with the following fields: "_id", "username", "password", "email". At least one of the users has registered all of the fields. If you run both this queries: 1) db.users.find({}, {password: false, email: false}); 2) db.users.find({}, {_id: false, username: true}) Would the output be the same?