Practice C100DEV Exam Online

Question 1

You have the following configuration file:

net:

bindIp: localhost

port: 27000

security:

authorization: enabled

You have to edit this file to use new directory as the dbPath: /var/mongodb/db

Select correct answer.

A :

dbPath:

storage: /var/mongodb/db

net:

bindIp: localhost

port: 27000

security:

authorization: enabled

B :

storage:

dbPath: /data/db

net:

bindIp: localhost

port: 27000

security:

authorization: enabled

C :

storage:

dbPath: /var/mongodb/db

net:

bindIp: localhost

port: 27000

security:

authorization: enabled

Answer: C

Question 2

Which of the following statements are true regarding MongoDB views? (select 4)

A : MongoDB views are created on demand and reflect the data in the source collection.

B : Write operations to views will raise an error.

C : MongoDB views themselves don't contain data.

D : Views are read only.

E : Views are write only.

Answer: A,B,C,D

Question 3

Select true statements about capped collections. (select 2)

A : Capped collections are fixed-size collections.

B : If the collection is full, the oldest document in the collection is removed when a new document is added to the collection.

C : Capped collections don't guarantee preservation of the insertion order.

D : Capped collections automatically remove the most recent documents in the collection to make room for new documents.

Answer: A,B

Question 4

Which of the following commands can you use to exports data in BSON format from a MongoDB cluster?

A : mongostore

B : mongodump

C : mongoimport

D : mongoexport

Answer: B

Question 5

You are working in a team on a certain application in the gaming sector. Queries similar to the following are quite often executed by your application.

db.gamers.find( { level: 10, is_active: true } )

How can you speed up the execution of similar queries? Choose the best option.

A : There is no way to speed up this query.

B :

Create the given index:

db.gamers.createIndex( { level: 1 } )

C :

Create the given index:

db.gamers.createIndex( { is_active: 1 } )

D :

Create the given index:

db.gamers.createIndex( { level: 1, is_active: 1 } )

Answer: D

Name:	MongoDB Certified Developer Associate
Exam Code:	C100DEV
Certification:	MongoDB Certified Developer Associate
Vendor:	MongoDB
Total Questions:	279
Last Updated:	Apr 23, 2024

MongoDB C100DEV