ElasticSearch ElasticSearch Search & Query DSL 2

Question 1

What is a 'fuzzy' query in Elasticsearch?

Accepted Answer

A query that finds terms similar to the search term based on edit distance

Answer

A query that returns all documents regardless of match

Answer

A query for searching nested documents

Answer

A query that performs partial word matching using wildcards

Question 2

What does the 'size' parameter control in an Elasticsearch search request?

Accepted Answer

The maximum number of hits returned in the response

Answer

The number of shards searched

Answer

The size of each document returned

Answer

The number of aggregation buckets returned

Question 3

What is the purpose of the '_source' field in an Elasticsearch search response?

Accepted Answer

It contains the original JSON document that was indexed

Answer

It identifies the node that handled the search

Answer

It lists the shards that were searched

Answer

It shows the query execution plan

Question 4

What is 'pagination' in Elasticsearch and which parameters are used for it?

Accepted Answer

Using 'from' and 'size' parameters to retrieve a subset of results

Answer

Splitting large indices using 'split' and 'shrink'

Answer

Using the 'scroll' API to paginate all results

Answer

Dividing results into buckets using aggregations

Question 5

What does the Elasticsearch 'highlight' feature do?

Accepted Answer

Returns snippets of matched text with search terms highlighted

Answer

Marks documents as important in the index

Answer

Boosts the relevance score of specific fields

Answer

Adds color-coding to the admin dashboard

Question 6

What is the 'explain' API in Elasticsearch used for?

Accepted Answer

Showing how a relevance score was calculated for a specific document

Answer

Documenting an index's mapping

Answer

Explaining cluster topology

Answer

Providing query optimization suggestions