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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 5 of 10

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Q41.
________ indexes expire documents after the specified number of seconds has passed since the indexed field value.
Discuss
Answer: (d).TTL
Discuss
Answer: (c).Duration of the removal operation depends on the workload of your mongod instance
Q43.
The background task that removes expired documents runs every ________ seconds.
Discuss
Answer: (c).60
Discuss
Answer: (c).Index does prevent a document from having multiple elements or embedded documents in an indexed array from having the same value
Q45.
On replica sets, the TTL background thread only deletes documents on _____________
Discuss
Answer: (a).primary
Q46.
You can combine the ________ constraint with the sparse index to filter these null values from the unique index and avoid the error.
Discuss
Answer: (c).Sparse
Q47.
You may not specify a unique constraint on a ______ index.
Discuss
Answer: (a).Hashed
Q48.
Which of the following indexes are always sparse?
Discuss
Answer: (d).all of the mentioned
Q49.
To modify an existing index, you cannot just re-issue the _________ method with the updated specification of the index.
Discuss
Answer: (c).createIndex()
Discuss
Answer: (c).To see the status of an indexing process, you can use the db.statusOp() method in the mongo shell

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