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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 6 of 10

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Q51.
If you need to rebuild indexes for a collection you can use the _________ method to rebuild all indexes on a collection in a single operation.

a.

db.collection.Index()

b.

db.collection.reIndex()

c.

db.collection.rebuildIndex()

d.

none of the mentioned

Discuss
Answer: (a).db.collection.Index()
Q52.
To terminate an ongoing index build, use the __________ method in the mongo shell.

a.

db.currentOp()

b.

db.killOp()

c.

db.removeOp()

d.

all of the mentioned

Discuss
Answer: (b).db.killOp()
Q53.
Point out the correct statement.

a.

After 4.0, you cannot terminate both background index builds and foreground index builds

b.

Before MongoDB 2.1, you could only terminate background index builds

c.

After 2.4, you can terminate both background index builds and foreground index builds

d.

None of the mentioned

Discuss
Answer: (c).After 2.4, you can terminate both background index builds and foreground index builds
Q54.
In the mongo shell, you can use the ______ method to return a list of the indexes on a collection.

a.

getallIndexes()

b.

getretIndexes()

c.

getIndexes()

d.

none of the mentioned

Discuss
Answer: (c).getIndexes()
Q55.
__________ views partial execution statistics collected during plan selection.

a.

curs.explain()

b.

cursor.explain()

c.

cursr.explain()

d.

all of the mentioned

Discuss
Answer: (b).cursor.explain()
Q56.
The __________ operator constrains the results of a geospatial $near or $nearSphere query to the specified distance.

a.

$center

b.

$maxDistance

c.

$minDistance

d.

all of the mentioned

Discuss
Answer: (b).$maxDistance
Q57.
To force MongoDB to use a particular index for a db.collection.________ operation, specify the index with the hint() method.

a.

query()

b.

find()

c.

index()

d.

all of the mentioned

Discuss
Answer: (b).find()
Q58.
Specify the ______ operator to the hint() method to prevent MongoDB from using any index.

a.

$unique

b.

$natural

c.

$spatial

d.

all of the mentioned

Discuss
Answer: (b).$natural
Q59.
___________ selects geometries that intersect with a GeoJSON geometry.

a.

$near

b.

$nearsphere

c.

$geoIntersect

d.

None of the mentioned

Discuss
Answer: (c).$geoIntersect
Q60.
Point out the wrong statement.

a.

If $near or $nearSphere query specifies the center point as a GeoJSON point, specify the distance as a non-negative number in meters

b.

If $nearSphere query specifies the center point as legacy coordinate pair, specify the distance as a non-negative number in radians

c.

$near can only use the 2dsphere index if the query specifies the center point as a GeoJSON point

d.

None of the mentioned

Discuss
Answer: (d).None of the mentioned
Page 6 of 10

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