Choose the statement that best describes the query below: db.myCol.find().sort({$natural:-1}).limit(50);

In a shared replica set environment, w defined the level and kind of write concern. Which value of w specifies ti return success only after a majority of voting members have acknowledge?

For a large data set in terms of size on the volume your MongoDB is exhibiting poor write performance. Choose the most probable reason

Under what conditions is it required to use the db.getCollection() method in the mongo shell to delete a collection?

Choose the best description of the query below:- db.users.find ({ 'name' : /m/i } ).pretty()

Which is true? Check all that apply.

Point out the wrong statement :

Which is correct about Capped Collections?

What is the default size of GridFS chunk?

Which is a primary key in MongoDB?

Which method can be used in MongoDB for relating documents?