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Welcome to the Optimization Strategies for MongoDB MCQs Page

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

Optimization Strategies for MongoDB MCQs | Page 6 of 8

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Q51.
If __________ is high relative to uptime, the database has existed in a lock state for a significant amount of time.

a.

globalLock.halfTime

b.

globalLock.totalTime

c.

globalLock.downTime

d.

all of the mentioned

Discuss
Answer: (b).globalLock.totalTime
Q52.
Point out the wrong statement.

a.

The storage.wiredTiger.indexConfig.prefixCompression setting does not affect all indexes created

b.

Database profiling can impact database performance

c.

The default storage.wiredTiger.engineConfig.cacheSizeGB setting assumes that there is a single mongod instance per node

d.

None of the mentioned

Discuss
Answer: (a).The storage.wiredTiger.indexConfig.prefixCompression setting does not affect all indexes created
Q53.
The __________ data structure value provides more granular information concerning the number of operations queued because of a lock.

a.

currentQueue

b.

curQueue

c.

currentQu

d.

none of the mentioned

Discuss
Answer: (a).currentQueue
Q54.
serverStatus includes all fields by default, except _________

a.

rangeDeleter

b.

rangeDelete

c.

rangeDEL

d.

none of the mentioned

Discuss
Answer: (b).rangeDelete
Q55.
______ field contains total number of current clients that connect to the database instance.

a.

available

b.

current

c.

always avail

d.

none of the mentioned

Discuss
Answer: (b).current
Q56.
MongoDB’s _______ is a database profiling system that can help identify inefficient queries and operations.

a.

Reporter

b.

Executer

c.

Profiler

d.

None of the mentioned

Discuss
Answer: (c).Profiler
Q57.
With the _______ storage engine, MongoDB uses memory-mapped files to store data.

a.

MMAPv2

b.

MMAPv1

c.

WiredTiger

d.

All of the mentioned

Discuss
Answer: (b).MMAPv1
Q58.
Point out the correct statement.

a.

Spikes in the number of available connections can also be the result of application or driver errors

b.

For read-heavy applications, increase the size of your replica set and distribute read operations to secondary members

c.

For read-heavy applications, deploy sharding and add one or more shards to a sharded cluster to distribute load among mongod instances

d.

All of the mentioned

Discuss
Answer: (b).For read-heavy applications, increase the size of your replica set and distribute read operations to secondary members
Q59.
The memory usage statuses metrics of the _________ output can provide insight into MongoDB’s memory use.

a.

globalstats

b.

serverStatus

c.

locks.deadlockCount

d.

all of the mentioned

Discuss
Answer: (b).serverStatus
Q60.
Point out the wrong statement.

a.

A single page fault completes slowly and is problematic

b.

Increasing the amount of RAM accessible to MongoDB may help reduce the frequency of page faults

c.

Page faults also can occur while accessing large data sets or scanning an entire collection

d.

None of the mentioned

Discuss
Answer: (a).A single page fault completes slowly and is problematic
Page 6 of 8

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