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Elasticsearch Interview Questions and Answers

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Ques 11. Explain the term 'Index' in Elasticsearch.

An index in Elasticsearch is a collection of documents that share a similar structure and are stored together for efficient searching.

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Ques 12. What is a Document in Elasticsearch?

A document is the basic unit of information in Elasticsearch, represented in JSON format.

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Ques 13. Differentiate between a Shard and a Replica in Elasticsearch.

A shard is a basic unit that stores data, while a replica is a copy of a shard for fault tolerance and scalability.

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Ques 14. Explain the purpose of an Analyzer in Elasticsearch.

An analyzer is used to preprocess data during indexing and searching, including tokenization and stemming.

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Ques 15. What is Inverted Index in Elasticsearch?

An inverted index is a data structure used to efficiently map terms to the documents containing them.

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