You have two text fields in your document and you'd like both to be quickly searchable. What should you do?

To import a CSV file into MongoDB, which command should you issue?

. In an MongoDB mapReduce command, the reduce function should _.

On a newly created collection, which field will have an index?

You have a collection of thousands of students. You'd like to return the second set of 20 documents from the sorted collection. What is the proper order in which to apply the operations?

You want to modify an existing index. What is the best way to do this?

MongoDB uses the acronym TTL to mean:

MongoDB can have indexes on Array Elements?

What's the difference between `save()` and `insert()` in mongo shell?

Authentication in MongoDB is:

Which of the following atomic operations would you use to add a value to an array only if it does not already exist in the array?