What is an Elasticsearch node?
a) A cluster of servers
b) A single server or instance that is part of an Elasticsearch cluster
c) A backup of an index
d) A type of Elasticsearch query
Answer:
b) A single server or instance that is part of an Elasticsearch cluster
Explanation:
An Elasticsearch node is a single server or instance that is part of an Elasticsearch cluster and stores data and participates in indexing and search operations.