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Welcome to the Indexes In MongoDB MCQs Page

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

Indexes In MongoDB MCQs | Page 2 of 10

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Q11.
To support ________ based sharding, MongoDB provides a hashed index type.

a.

primary

b.

root

c.

hash

d.

all of the mentioned

Discuss
Answer: (c).hash
Q12.
Point out the correct statement.

a.

Whether the use of a compound index or the use of an index intersection is more efficient depends on the particular query and the system

b.

Certain restrictions apply to indexes, such as the length of the index keys or the number of indexes per collection

c.

For queries that specify compound query conditions, if one index can fulfill a part of a query condition, and another index can fulfill another part of the query condition, then MongoDB can use the intersection of the two indexes to fulfill the query

d.

None of the mentioned

Discuss
Answer: (d).None of the mentioned
Q13.
________ index type, which indexes the hash of the value of a field.

a.

Hashed

b.

Unique

c.

Multikey

d.

None of the mentioned

Discuss
Answer: (a).Hashed
Q14.
The _________ property for an index causes MongoDB to reject duplicate values for the indexed field.

a.

Hashed

b.

Unique

c.

Multikey

d.

None of the mentioned

Discuss
Answer: (c).Multikey
Q15.
Point out the wrong statement.

a.

TTL index is ideal for certain types of information like machine generated event data, logs, and session information that only need to persist in a database for a finite amount of time

b.

You cannot combine the sparse index option with the unique index option

c.

TTL indexes are special indexes that MongoDB can use to automatically remove documents from a collection after a certain amount of time

d.

None of the mentioned

Discuss
Answer: (b).You cannot combine the sparse index option with the unique index option
Q16.
The ______ property of an index ensures that the index only contain entries for documents that have the indexed field.

a.

Hashed

b.

Unique

c.

Sparse

d.

None of the mentioned

Discuss
Answer: (c).Sparse
Q17.
MongoDB can use the _________ of indexes to fulfill queries.

a.

union

b.

intersection

c.

projection

d.

none of the mentioned

Discuss
Answer: (b).intersection
Q18.
Which of the following method is to verify whether MongoDB used index intersection?

a.

explain()

b.

analyze()

c.

intersect()

d.

none of the mentioned

Discuss
Answer: (a).explain()
Q19.
An index prefix is a subset of a ______ index, consisting of one or more keys starting from the beginning of the index.

a.

Hashed

b.

Unique

c.

Sparse

d.

Compound

Discuss
Answer: (d).Compound
Q20.
Index __________ does not eliminate the need for creating compound indexes.

a.

union

b.

addition

c.

intersection

d.

all of the mentioned

Discuss
Answer: (c).intersection
Page 2 of 10

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