Answer / Priyank Kaushik

A replica set is a group of MongoDB instances that maintain identical data sets to increase availability and redundancy. Each member has the same data and automatically votes to elect a primary node responsible for handling write operations. In case of failure or maintenance, another member can be elected as the primary.

Do the mongodb databases have schema?

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What do you understand by nosql databases? Is mongodb a nosql database? Explain.

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What is mongodb named after?

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How do you see the connections used by mongos?

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Is mongodb a nosql database? Explain.

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How we can create an index in mongodb?

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Whether use to safe backup log feature in mongodb?

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Is mongodb easy to learn?

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Why mongodb data files so large (in size)?

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Is there any need to create database command in mongodb?

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When using replication, can some members use journaling and others not?

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What is mongod command?

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