MongoDB MongoDB Certified DBA Associate C100DBA New Questions

MongoDB Associate Database Administrator(Based on MongoDB 6.0 and 7.0+) Questions and Answers

Question 33

To add a new user and enable authentication in MongoDB, which of the following steps need be executed?

update users collection and restart mongodb

All of the above

update users collection and restart mongodb with -auth option

update users collection and run db.enableAuthenticationQ

Question 34

What is one purpose of a hidden index?

To remove it from $indexStats aggregation stage.

To reduce the cost of a collection scan.

To test the impact of deleting the index without actually deleting it.

To hide associated documents in the collection.

Question 35

Which format/standard is used by MongoDB internally to store documents?

JSON

BSON

B+ Trees

JSON - Extended

Question 36

What is the output of following two commands in MongoDB: db. posts. insert({n_id " :l}) db.posts.insert({ " _id " :l})

Two documents will be inserted with _id as 1

MongoDB will automatically increment the _id of the second document as 2

This will throw a duplicate key error

It will insert two documents and throw a warning to the user