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.

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