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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 6 of 11

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Q51.
Point out the wrong statement.

a.

Clients will not distribute reads with the appropriate read preference to hidden members

b.

Hidden members cannot vote in replica set elections

c.

If you stop a voting hidden member, ensure that the set has an active majority or the primary will step down

d.

None of the mentioned

Discuss
Answer: (b).Hidden members cannot vote in replica set elections
Q52.
__________ operations cannot guarantee that the data files do not change.

a.

db.lockl()

b.

db.synclock()

c.

db.fsyncUnlock()

d.

secondary

Discuss
Answer: (c).db.fsyncUnlock()
Q53.
_______ may block reads, including those necessary to verify authentication.

a.

db.lockall()

b.

db.fsyncLock()

c.

db,lockreads()

d.

none of the mentioned

Discuss
Answer: (b).db.fsyncLock()
Q54.
Point out the correct statement.

a.

In MongoDB, clients cannot see the results of writes before they are made durable

b.

Users may configure read preference on a per-connection basis to prefer that the read operations return results from the secondary members

c.

Clients cannot read data which may be subsequently rolled back

d.

None of the mentioned

Discuss
Answer: (b).Users may configure read preference on a per-connection basis to prefer that the read operations return results from the secondary members
Q55.
________ unlocks a mongod instance to allow writes and reverses the operation of a db.fsyncLock() operation.

a.

db.fsyncUnlock()

b.

db.fsynclock()

c.

db.syncUnlock()

d.

secondary

Discuss
Answer: (a).db.fsyncUnlock()
Q56.
Delayed members are a ________ or a running “historical” snapshot of the data set.

a.

“rolling backup”

b.

“roll backup”

c.

“rolling commit”

d.

none of the mentioned

Discuss
Answer: (a).“rolling backup”
Q57.
Delayed members apply operations from the _______ on a delay.

a.

oplog

b.

log

c.

mlog

d.

none of the mentioned

Discuss
Answer: (a).oplog
Q58.
In sharded clusters, delayed members have limited utility when the __________ is enabled.

a.

Balancer

b.

Collector

c.

Emitter

d.

None of the mentioned

Discuss
Answer: (a).Balancer
Q59.
A delayed member has its priority equal to 0 and hidden equal to ___________

a.

0

b.

flase

c.

true

d.

all of the mentioned

Discuss
Answer: (c).true
Q60.
Which of the following ddds an arbiter to a replica set?

a.

rs.addArb()

b.

rs.addArbiter()

c.

rs.addtoArb()

d.

all of the mentioned

Discuss
Answer: (a).rs.addArb()
Page 6 of 11

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