MongoDB MCQ Questions - Index

This section focuses on "Index" in MongoDB. These Multiple Choice Questions (MCQ) should be practiced to improve the MongoDB skills required for various interviews (campus interview, walk-in interview, company interview), placements, entrance exams and other competitive examinations.

1. How to create index in mongoDB?

A. index()
B. createIndex()
C. putIndex()
D. getIndex()

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2. Which of the following iis correct syntax of createindex?

A. db.COLLECTION_NAME.createIndex({KEY:1})
B. COLLECTION_NAME.createIndex({KEY:1})
C. db.COLLECTION_NAME.createIndex
D. db.createIndex({KEY:1})

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3. To create index in descending order, the value of key is?

A. 1
B. 0
C. -1
D. infinite

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4. The default value of background Parameter is :

A. TRUE
B. FALSE
C. 0
D. 1

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5. The default value of default_language Parameter is :

A. Mongo
B. DB
C. Mongod
D. English

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6. Which method deletes multiple (specified) indexes on a collection?

A. dropIndexes()
B. dropIndex()
C. Both A and B can be used
D. getIndexes()

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7. Which method returns the description of all the indexes int the collection?

A. putIndexes()
B. setIndexes()
C. getIndexes()
D. All of the above

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8. The maximum value of weights parameter is:

A. 999
B. 9999
C. 99999
D. 99

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9. What is the type of sparse parameter in createIndex()?

A. Boolean
B. string
C. integer
D. document

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10. What is the type of weights parameter in createIndex()?

A. Boolean
B. string
C. integer
D. document

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