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Welcome to the MongoDB CRUD Operations MCQs Page

Dive deep into the fascinating world of MongoDB CRUD Operations with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of MongoDB CRUD Operations, a crucial aspect of MongoDB. In this section, you will encounter a diverse range of MCQs that cover various aspects of MongoDB CRUD Operations, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within MongoDB.

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Check out the MCQs below to embark on an enriching journey through MongoDB CRUD Operations. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of MongoDB.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of MongoDB CRUD Operations. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

MongoDB CRUD Operations MCQs | Page 7 of 8

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Q61.
___________ concern describes the guarantee that MongoDB provides when reporting on the success of a write operation.

a.

Write

b.

Read

c.

Update

d.

None of the mentioned

Discuss
Answer: (a).Write
Q62.
Point out the correct statement.

a.

Read operations on sharded clusters are most efficient when directed to a specific shard

b.

Sharded clusters allow you to partition a data set among a cluster of mongod instances in a way that is nearly transparent to the application

c.

For a sharded cluster, applications issue operations to one of the mongos instances associated with the cluster

d.

All of the mentioned

Discuss
Answer: (d).All of the mentioned
Q63.
When inserts, updates and deletes have a _________ write concern, write operations return quickly.

a.

strong

b.

weak

c.

average

d.

very strong

Discuss
Answer: (b).weak
Q64.
The mongo shell and the MongoDB drivers use __________ as the default write concern.

a.

Nacknowledged

b.

Acknowledgement

c.

Acknowledged

d.

All of the mentioned

Discuss
Answer: (c).Acknowledged
Q65.
Point out the wrong statement.

a.

When a query does not include a shard key, the mongos can use cluster metadata from the config database to route the queries to shards

b.

On larger clusters, scatter gather queries are unfeasible for routine operations

c.

Replica sets use read preferences to determine where and how to route read operations to members of the replica set

d.

None of the mwntioned

Discuss
Answer: (a).When a query does not include a shard key, the mongos can use cluster metadata from the config database to route the queries to shards
Q66.
_____________ is used to control mongod commits in the journal.

a.

commitIntervMs

b.

commitInterval

c.

commitIntervalMs

d.

all of the mentioned

Discuss
Answer: (c).commitIntervalMs
Q67.
Clients can set a __________ value as part of a replica acknowledged write concern.

a.

timeout

b.

wtimeout

c.

waittimeout

d.

none of the mentioned

Discuss
Answer: (b).wtimeout
Q68.
MongoDB does not ___________ modifications made before the wtimeout interval expired.

a.

commit

b.

rollback

c.

save

d.

all of the mentioned

Discuss
Answer: (b).rollback
Q69.
With an __________ write concern, MongoDB does not acknowledge the receipt of write operations.

a.

Nacknowledged

b.

Acknowledgement

c.

Acknowledged

d.

Unacknowledged

Discuss
Answer: (d).Unacknowledged
Q70.
With a receipt acknowledged write concern, the _________confirms that it received the write operation and applied the change to the in-memory view of data.

a.

mongod

b.

mongos

c.

mongo

d.

mongoc

Discuss
Answer: (a).mongod
Page 7 of 8

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