Which of the following statements are true about MongoDB

Which of the following are considered Core MongoDB operations?

The currently preferred replication method is called:

The core database operations in MongoDB are abbreviated as:

To atomically modify and return a single document from a collection, use:

Indexes in mongodb are NOT good for:

What is the correct query to find all of the people who have a home phone number defined?

When no parameters are passed to explain(), what mode does it run in?

To cleanly shut down MongoDB, what command should you use from the MongoDB shell?

You are going to do a series of updates to multiple records. You find setting the multi option of the update() command too tiresome. What should you do instead?

You need to get the names of all the indexes on your current collection. What is the best way to accomplish this?