Elasticsearch Objective Questions and Answers

This Elasticsearch quiz contains carefully curated objective questions with correct answers and clear explanations. It is designed for developers, backend engineers, and interview preparation, covering indexing, querying, aggregation, scaling, and performance optimization techniques.

Practice Elasticsearch MCQs with Detailed Explanations

Answer at least 12 questions to submit and verify answers.

1 What is Elasticsearch primarily used for? Easy

2 Which data structure is used internally by Elasticsearch for efficient search? Medium

3 What is a shard in Elasticsearch? Medium

4 What is the default number of primary shards in Elasticsearch 7.x+? Medium

5 Which API is used to insert a document into Elasticsearch? Medium

6 What is a replica shard? Medium

7 Which query is used for exact matches? Medium

8 What does the match query do? Medium

9 Which field type is best for sorting and aggregations? Medium

10 What is the purpose of analyzers in Elasticsearch? Medium

11 Which aggregation is used to group data? Medium

12 What does the bool query 'must' clause represent? Medium

13 Which clause excludes documents? Medium

14 What is the purpose of the filter clause? Medium

15 Which API is used for bulk operations? Medium