Elasticsearch Objective Questions and Answers - Set 3

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. This is part 3 of the series.

Practice Elasticsearch MCQs with Detailed Explanations

Answer at least 12 questions to submit and verify answers.

31 Which query allows optional clauses? Medium

32 What is the default scoring algorithm? High

33 What is snapshot used for? Medium

34 Which API checks cluster health? Medium

35 What does 'green' cluster status mean? Medium

36 Which query supports fuzziness? Medium

37 What is the purpose of index templates? High

38 Which API deletes an index? Easy

39 What is fielddata used for? High

40 What is a nested field? High

41 Which API updates a document partially? Medium

42 What is scroll API used for? High

43 What is the purpose of routing? High

44 Which feature improves indexing performance? Medium

45 What happens when a node fails? Medium