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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 8 of 11

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Q71.
Point out the wrong statement.

a.

The oplog is a special capped collection that keeps a rolling record of all operations that modify the data stored in your databases

b.

MongoDB applies database operations on the primary and then records the operations on the primary’s oplog

c.

The primary members then copy and apply these operations in an asynchronous process

d.

None of the mentioned

Discuss
Answer: (c).The primary members then copy and apply these operations in an asynchronous process
Q72.
The oplog must translate multi-updates into individual operations in order to maintain ____________

a.

availability

b.

idempotency

c.

scalability

d.

secondary

Discuss
Answer: (b).idempotency
Q73.
Use _________ from a secondary member and the replication status output to assess the current state of replication.

a.

db.getReplInfo()

b.

db.getReplicationInfo()

c.

rs.printReplicationInfo()

d.

none of the mentioned

Discuss
Answer: (b).db.getReplicationInfo()
Q74.
Point out the correct statement.

a.

To facilitate replication, all replica set members send heartbeats (pings) to all other members

b.

For proper replication operations, entries in the oplog must be idempotent

c.

Any member can import oplog entries from any other member

d.

All of the mentioned

Discuss
Answer: (b).For proper replication operations, entries in the oplog must be idempotent
Q75.
For a member to sync from another, both members must have the same value for the _________ setting.

a.

buildIndexes

b.

getIndexes

c.

buildpriIndexes

d.

secondary

Discuss
Answer: (a).buildIndexes
Q76.
Secondaries apply operations from the primary asynchronously to provide __________ consistency.

a.

strict

b.

strong

c.

eventual

d.

none of the mentioned

Discuss
Answer: (c).eventual
Q77.
When ______________ is true, the mongod instance saves all documents migrated from the shard to the moveChunk directory of the storage.dbPath.

a.

sharding.archiveChunks

b.

sharding.archiveMovedChunks

c.

shards.archiveMovedChunks

d.

rs.syncFrom()

Discuss
Answer: (b).sharding.archiveMovedChunks
Q78.
Replication _______ is a delay between operation on the primary and the application of that operation from the oplog to the secondary.

a.

lag

b.

delay

c.

latency

d.

none of the mentioned

Discuss
Answer: (a).lag
Q79.
A delayed member may show as 0 seconds behind the primary when the inactivity period on the primary is greater than the ________ value.

a.

slaveDelayTime

b.

slaveDelay

c.

slaveTime

d.

rs.slave()

Discuss
Answer: (b).slaveDelay
Q80.
_________ shut down the mongod instance for one of the non-primary members of your replica set.

a.

db.shutdown()

b.

db.shutdownServer()

c.

db.shutServer()

d.

all of the mentioned

Discuss
Answer: (b).db.shutdownServer()
Page 8 of 11

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