ElasticSearch Trivia 2

Question 1

What company originally created Elasticsearch?

Accepted Answer

Elastic NV

Answer

Elasticsearch was created by Shay Banon and is developed by Elastic NV, the company he co-founded.

Question 2

Which data format does Elasticsearch use to store documents natively?

Accepted Answer

JSON

Answer

Elasticsearch stores all documents as JSON objects, making it schema-flexible and human-readable.

Question 3

What is the default HTTP port Elasticsearch listens on?

Accepted Answer

9200

Answer

Elasticsearch's REST API is accessible on port 9200 by default, while port 9300 is used for node-to-node communication.

Question 4

What built-in Elasticsearch component is used for cluster coordination and leader election since version 7.x?

Accepted Answer

Elasticsearch's own master election

Answer

Since version 7.0, Elasticsearch handles its own master node election internally without requiring ZooKeeper.

Question 5

In Elasticsearch, what term describes a named collection of documents with similar characteristics?

Accepted Answer

Index

Answer

An index in Elasticsearch is a logical namespace that holds related documents, similar to a database in relational systems.

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