ElasticSearch ElasticSearch Search & Query DSL

Question 1

What is the Query DSL in Elasticsearch?

Accepted Answer

A JSON-based language for defining queries

Answer

A command-line tool for managing clusters

Answer

A SQL-compatible query interface

Answer

A scripting language for data transformation

Question 2

What is the difference between a 'filter' context and a 'query' context in Elasticsearch?

Accepted Answer

Query context calculates relevance scores; filter context only checks if documents match without scoring

Answer

Filter context scores results; query context does not

Answer

Filter context is used for aggregations only

Answer

There is no functional difference

Question 3

What does a 'match' query do in Elasticsearch?

Accepted Answer

Analyzes the input text and finds documents matching the analyzed terms

Answer

Finds documents where a field exactly equals a value

Answer

Finds documents based on a range of values

Answer

Matches documents by their document ID

Question 4

Which query type is best for exact value matching on keyword fields in Elasticsearch?

Accepted Answer

term

Answer

match

Answer

match_phrase

Answer

fuzzy

Question 5

What is a 'bool' query in Elasticsearch used for?

Accepted Answer

Combining multiple query clauses using must, should, must_not, and filter

Answer

Searching for boolean true/false field values

Answer

Performing fuzzy matching on text fields

Answer

Filtering documents by existence of a field

Question 6

What does the 'match_phrase' query do in Elasticsearch?

Accepted Answer

Matches documents where terms appear as an exact phrase in the specified order

Answer

Matches documents where terms appear in any order

Answer

Performs a wildcard phrase search

Answer

Matches documents containing any single term from the phrase