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Welcome to the Replication in MongoDB MCQs Page

Dive deep into the fascinating world of Replication in MongoDB with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Replication in MongoDB, a crucial aspect of MongoDB. In this section, you will encounter a diverse range of MCQs that cover various aspects of Replication in MongoDB, 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 Replication in MongoDB. 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 Replication in MongoDB. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Replication in MongoDB MCQs | Page 4 of 11

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Q31.
Replica sets provide high availability using automatic ________

a.

failover

b.

replication

c.

failure

d.

all of the mentioned

Discuss
Answer: (a).failover
Q32.
Point out the wrong statement.

a.

When the primary rejoins the set as a secondary, it reverts, or “rolls back,” its write operations to maintain database consistency with the other members

b.

A rollback is necessary only if the primary had accepted write operations that the secondaries had not successfully replicated before the primary stepped down

c.

MongoDB attempts for rollbacks, which should be rare

d.

None of the mentioned

Discuss
Answer: (c).MongoDB attempts for rollbacks, which should be rare
Q33.
Failover allows a ________ member to become primary if primary is unavailable.

a.

Hidden

b.

Primary

c.

ViewState

d.

Secondary

Discuss
Answer: (d).Secondary
Q34.
Sometimes the failover process may require a ____________ during operation.

a.

savepoint

b.

rollback

c.

commit

d.

none of the mentioned

Discuss
Answer: (b).rollback
Q35.
Point out the correct statement.

a.

A rollback does not occur if the write operations replicate to another member of the replica set before the primary steps down

b.

Secondaries that can not keep up with the throughput of operations on the former primary, decrease the size and impact of the rollback

c.

Fault tolerance is an effect of replica set size, but the relationship is not direct

d.

None of the mentioned

Discuss
Answer: (a).A rollback does not occur if the write operations replicate to another member of the replica set before the primary steps down
Q36.
MongoDB writes the rollback data to BSON files in the rollback/ folder under the database’s ________ directory.

a.

dbPath

b.

logPath

c.

dataPath

d.

all of the mentioned

Discuss
Answer: (a).dbPath
Q37.
The names of rollback files have the following form.

a.

<database>.<collection>.<timestamp>.bson.

b.

<database>.<collection>.<tp>.bson.

c.

<database>.<collection>.<timestamp>.json.

d.

None of the mentioned

Discuss
Answer: (a).<database>.<collection>.<timestamp>.bson.
Q38.
_________ is used to read the contents of the rollback files.

a.

bsondumpdata

b.

bsondp

c.

bsondump

d.

none of the mentioned

Discuss
Answer: (c).bsondump
Q39.
Use ______ to apply the changes to the new primary after rollback.

a.

mongostore

b.

mongorestore

c.

restore

d.

none of the mentioned

Discuss
Answer: (b).mongorestore
Q40.
mongorestore recreates indexes recorded by _____________

a.

bsondump

b.

mongodump

c.

mongostore

d.

all of the mentioned

Discuss
Answer: (b).mongodump
Page 4 of 11

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