Question 1

You have a replicated cluster with 1 primary, 3 secondary, 1 arbiter. One of the secondary is hidden. What is the replication factor of this replicated cluster?

Options :

A : 7

B : 03

C : 04

D : 06

Answer: C

Question 2

Which of the following commands can cause the database to be locked?

Options :

A : All of the above

B : Inserting data

C : Map-reduce

D : Issuing a query

Answer: A

Question 3

Which mongodb tool is used to report details on number of database operations in MongoDB?

Options :

A : mongostat

B : mongotop

C : mongorestore

D : mongodump

Answer: A

Question 4

In order to ensure that you can maintain high availability in the face of server failure, you should implement which of the following?

Options :

A : Sharding

B : Properly defined user roles

C : Replication

D : Put indexes on all of your documents

E : The proper storage engine

Answer: C

Question 5

Which option can be used with update command so that a new document gets created if no matching document is found based on the query condition?

Options :

A : upsert command instead of update command

B : {update: true, insert: true} as the third parameter of update command

C : This has to be handled in application code (Node.js, PHP, JAVA, C#, etc.) and cannot be handled in mongo shell query

D : Specify {upsert : true } as the third parameter of update command

Answer: D