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MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) Questions and Answers

Question 5

Which of the following is true about sharding?

Creating a sharded key automatically creates an index on the collection using that key

We cannot change a shard key directly/automatically once it is set up

A sharded environment does not support sorting functionality since the documents lie on various mongod instances

Sharding is enabled at the database level

Question 6

Below is a sample document of "orders" collection

$sort

Question 7

What is the maximum size of Index Key Limit and Number of Indexes per collection?

1024 bytes and 64 indexes

12 mega bytes and 64 indexes

64 bytes and 1024 indexes

1024 bytes and unlimited indexes

Question 8

You are in a sharded cluster. What will you do prior to initiating backup in sharded cluster?

db.stopBalancer()

db.stopserver()

sh.stopBalancer()

sh.stopserverQ