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Home / Interview Subjects / MongoDB
WithoutBook LIVE Mock Interviews MongoDB Related interview subjects: 24

Interview Questions and Answers

Know the top MongoDB interview questions and answers for freshers and experienced candidates to prepare for job interviews.

Total 27 questions Interview Questions and Answers

The Best LIVE Mock Interview - You should go through before interview

Know the top MongoDB interview questions and answers for freshers and experienced candidates to prepare for job interviews.

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Intermediate / 1 to 5 years experienced level questions & answers

Ques 8

How does MongoDB provide high availability?

MongoDB achieves high availability through replica sets, where data is replicated across multiple servers. If one server goes down, another can serve the data.
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Ques 9

What is the role of the WiredTiger storage engine in MongoDB?

WiredTiger is the default storage engine in MongoDB. It provides features like compression, document-level locking, and support for multiple storage engines in the same MongoDB deployment.
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Ques 10

What is the significance of the Journal in MongoDB?

The Journal in MongoDB is a write-ahead log that helps in recovering data in case of a server crash or failure. It ensures data durability and consistency.
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Ques 11

Explain the process of data migration in MongoDB.

Data migration in MongoDB involves transferring data from one database or collection to another. It can be done using tools like `mongodump` and `mongorestore`.
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Ques 12

How can you create an index in MongoDB?

You can create an index in MongoDB using the `createIndex` method. For example, `db.collection.createIndex({ field: 1 })` creates an ascending index on the specified field.
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