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Welcome to the Sharding Concepts and Sharded Cluster MCQs Page

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

Sharding Concepts and Sharded Cluster MCQs | Page 10 of 10

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Q91.
_______ enables the balancer and waits for balancing to start.

a.

sh.waitForBalancer()

b.

sh.startBalancer()

c.

sh.waitForDLock()

d.

all of the mentioned

Discuss
Answer: (b).sh.startBalancer()
Q92.
Point out the correct statement.

a.

sh.deadForDLock() waits for a specified distributed sharded cluster lock

b.

sh.waitForBalancerOff() waits until the balancer stops running

c.

sh.statusserver() reports on the status of a sharded cluster, as db.printShardingStatus()

d.

all of the mentioned

Discuss
Answer: (a).sh.deadForDLock() waits for a specified distributed sharded cluster lock
Q93.
_________ waits for a change in ping state from one of the mongos in the sharded cluster.

a.

sh.waitForBalancer()

b.

sh.startBalancer()

c.

sh.waitForPingChange()

d.

all of the mentioned

Discuss
Answer: (c).sh.waitForPingChange()
Q94.
_______ forces an update to the cluster metadata cached by a mongos.

a.

config

b.

flushconf

c.

flushRouterConfig

d.

all of the mentioned

Discuss
Answer: (c).flushRouterConfig
Q95.
Point out the wrong statement.

a.

moveChunks provides the ability to combine chunks on a single shard

b.

setShardVersion is used to set the config server version

c.

shardCollection enables the sharding functionality for a collection, allowing the collection to be sharded

d.

none of the mentioned

Discuss
Answer: (d).none of the mentioned
Q96.
Which of the following command that validates index on shard key?

a.

checkShardingIndex

b.

checkSIndex

c.

enableSharding

d.

all of the mentioned

Discuss
Answer: (a).checkShardingIndex
Q97.
Which of the following command is used to determine split points?

a.

splitVector

b.

medianKey

c.

movePrimary

d.

none of the mentioned

Discuss
Answer: (a).splitVector
Q98.
You can only issue listShards against the ________ database.

a.

local

b.

admin

c.

temp

d.

none of the mentioned

Discuss
Answer: (b).admin
Q99.
_________ is an internal command that supports the sharding functionality.

a.

getBalancerHost()

b.

getShardMap

c.

enableSharding()

d.

all of the mentioned

Discuss
Answer: (b).getShardMap
Q100.
________ command verifies that a process is a mongos.

a.

medianKey

b.

isdbgrid

c.

movePrimary

d.

none of the mentioned

Discuss
Answer: (b).isdbgrid
Page 10 of 10

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