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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 5 of 8

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Q41.
If the indexed field in a document is not a _____ or an array that holds a date value(s), the document will not expire.

a.

DATE

b.

TIME

c.

DATETIME

d.

All of the mentioned

Discuss
Answer: (a).DATE
Q42.
Point out the correct statement.

a.

TTL indexes expire documents after the specified number of seconds has passed since the indexed field value

b.

TTL indexes are special compound indexes

c.

If a document does not contain the indexed field, the document will expire

d.

None of the mentioned

Discuss
Answer: (a).TTL indexes expire documents after the specified number of seconds has passed since the indexed field value
Q43.
Secondary members replicate _________ operations from the primary.

a.

Update

b.

Drop

c.

Insert

d.

None of the mentioned

Discuss
Answer: (d).None of the mentioned
Q44.
A collection with a TTL index has __________ enabled.

a.

usePowerOf3Sizes

b.

usePowerOf2Sizes

c.

usePowerOf4Sizes

d.

none of the mentioned

Discuss
Answer: (b).usePowerOf2Sizes
Q45.
Which field does not support TTL indexes?

a.

_identity

b.

_option

c.

_id

d.

None of the mentioned

Discuss
Answer: (c)._id
Q46.
You cannot use _________ to change the value of expireAfterSeconds of an existing index.

a.

createIndex()

b.

dropIndex()

c.

removeIndex()

d.

none of the mentioned

Discuss
Answer: (a).createIndex()
Q47.
You cannot create a TTL index on a ________ collection.

a.

Sharded

b.

Capped

c.

Primary

d.

None of the mentioned

Discuss
Answer: (b).Capped
Q48.
Which of the following setting defines what constitutes a “slow” operation?

a.

slowOpThresholdGs

b.

fastOpThresholdMs

c.

slowOpThresholdMs

d.

none of the mentioned

Discuss
Answer: (c).slowOpThresholdMs
Q49.
Point out the correct statement.

a.

MongoDB uses a locking system to ensure data set consistency

b.

If certain operations are long-running or a queue forms, performance will degrade as requests and operations wait for the lock

c.

Long queries can result from ineffective use of indexes

d.

All of the mentioned

Discuss
Answer: (d).All of the mentioned
Q50.
________ provide the number of times the lock acquisitions encountered deadlocks.

a.

locks.deadlock

b.

lock.deadlockCount

c.

locks.deadlockCount

d.

all of the mentioned

Discuss
Answer: (c).locks.deadlockCount
Page 5 of 8

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