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20 interview questionsfor developers (2026)

Test your developer skills before an interview with 20 corrected questions on 80+ topics. Beginner, Intermediate or Expert level.

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20 questions
Medium
4 votes285 runs0 comment

What is the difference between type *text* and type *keyword* in Elasticsearch?

Data Scientist
elasticsearch
text
keyword
Clément Devos (W3D Team)at Jan 4, 2022
Medium
2 votes251 runs0 comment

Which of these products is not part of the Elasticsearch suite?

Data Scientist
products
Clément Devos (W3D Team)at Mar 21, 2023
Expert
2 votes245 runs0 comment

Define a template in Elasticsearch

Data Scientist
elasticsearch
index
template
Clément Devos (W3D Team)at Jan 4, 2022
Hard
1 vote269 runs0 comment

In Elasticsearch, when indexing a string, it will be analyzed. This analysis phase is made up of three stages. In what order are these three steps performed?

Data Scientist
elasticsearch
analysis
Clément Devos (W3D Team)at Jan 4, 2022
Expert
1 vote264 runs0 comment

How many shards do we have for the people index if we have the following configuration: index.number_of_shards: 5, index.number_of_replicas: 2

Data Scientist
shards
replicas
Clément Devos (W3D Team)at Jan 4, 2022
Medium
1 vote264 runs0 comment

How to do a proximity search in Elasticsearch?

Data Scientist
search
geo
Clément Devos (W3D Team)at Jan 4, 2022
Easy
1 vote262 runs
1 comment

What is the name of the official Graphical Interface of the Elastic suite?

Data Scientist
elasticsearch
kibana
Clément Devos (W3D Team)at Sep 19, 2022
Hard
1 vote240 runs0 comment

How to define an Array type in your documents?

Data Scientist
arrays
elasticsearch
Clément Devos (W3D Team)at Jan 4, 2022
Hard
1 vote237 runs0 comment

What is the tagline of Elasticsearch?

Data Scientist
search
elasticsearch
Clément Devos (W3D Team)at Jan 4, 2022
Hard
1 vote232 runs0 comment

Calculate the average age by country of residence in Elasticsearch

Data Scientist
elasticsearch
aggregations
nested
Clément Devos (W3D Team)at Jan 4, 2022
Medium
1 vote231 runs
3 comments

How to check the configuration of the analyzers in your index in Elasticsearch

Data Scientist
elasticsearch
analyzers
Clément Devos (W3D Team)at Jan 4, 2022
Easy
1 vote230 runs0 comment

What is an aggregation in Elasticsearch?

Data Scientist
aggregations
search
Clément Devos (W3D Team)at Jan 4, 2022
Hard
1 vote229 runs0 comment

Calculate the average age of the results returned by a search in Elasticsearch

Data Scientist
aggregations
average
Clément Devos (W3D Team)at Jan 4, 2022
Easy
1 vote226 runs
1 comment

How to search all indexes starting with wld in Elasticsearch

Data Scientist
elasticsearch
search
Clément Devos (W3D Team)at Jan 4, 2022
Medium
1 vote225 runs0 comment

What is the name of the API for modifying your documents before indexing?

Data Scientist
api
ingest
Clément Devos (W3D Team)at Jan 4, 2022
Hard
1 vote223 runs0 comment

How to index multiple documents in Elasticsearch

Data Scientist
elasticsearch
indexing
Clément Devos (W3D Team)at Jan 4, 2022
Expert
1 vote223 runs0 comment

Define an analyzer using the French token filter stopword in Elasticsearch

Data Scientist
analyzer
stopwords
Clément Devos (W3D Team)at Jan 4, 2022
Hard
1 vote222 runs0 comment

How to filter search results after running aggregations in Elasticsearch

Data Scientist
aggregations
filters
Clément Devos (W3D Team)at Jan 4, 2022
Medium
1 vote221 runs0 comment

Create and delete an alias in a single HTTP request in Elasticsearch

Data Scientist
elasticsearch
alias
Clément Devos (W3D Team)at Jan 4, 2022
Hard
0 vote223 runs0 comment

Which of these roles does not apply to an Elasticsearch node?

Data Scientist
roles
Clément Devos (W3D Team)at Jan 4, 2022