--- title: "Elasticsearch: Full-Text Search Engine Fundamentals" lang: "en" author: "Mohammad Abu Mattar" canonical: https://mkabumattar.com/post/elasticsearch-search-engine-fundamentals-quiz --- [Home](/)›[Quizzes](/quizzes)›[All Categories](/quizzes/categories)›[Elasticsearch](/quizzes/categories/elasticsearch) Quizzes [Elasticsearch](/quizzes/categories/elasticsearch)[Search](/quizzes/categories/search)[Quizzes](/quizzes/categories/quizzes) # Elasticsearch: Full-Text Search Engine Fundamentals [Mohammad Abu Mattar](/authors/mohammad-abu-mattar)20 QuestionsIntermediatePublished: 23 Feb 2026 [Markdown for AI(opens in a new tab)](/post/elasticsearch-search-engine-fundamentals-quiz/index.md "Open the plain-Markdown version of this page, for pasting into an AI tool") Series [Databases & Data Persistence](/series/databases--data-persistence)3/4 [PreviousMongoDB: NoSQL Database Fundamentals](/quizzes/post/mongodb-nosql-fundamentals-quiz)[NextDatabase Design & Patterns](/quizzes/post/database-design-patterns-quiz) All posts in this series (4) Quizzes4 1. [SQL: Query Fundamentals & Database Concepts](/quizzes/post/sql-query-fundamentals-quiz) 2. [MongoDB: NoSQL Database Fundamentals](/quizzes/post/mongodb-nosql-fundamentals-quiz) 3. [Elasticsearch: Full-Text Search Engine FundamentalsYou are here](/quizzes/post/elasticsearch-search-engine-fundamentals-quiz) 4. [Database Design & Patterns](/quizzes/post/database-design-patterns-quiz) ## Elasticsearch: Full-Text Search Engine Fundamentals Up to 20 questions, shuffled on every run Quiz Configuration Enterto start Welcome to the Elasticsearch Basics Quiz! Elasticsearch sits behind a large share of log analysis and real-time search. Whether you are troubleshooting a production crash by digging through Filebeat logs or building a performance dashboard in Kibana, understanding the underlying index structure and the Query DSL is an important skill for DevOps engineers. Let’s see how much you know! Answer key and explanations20 questions The quiz above draws 20 questions at random from these 30, so a second attempt will not be the same run. Everything in the pool is listed here. 1. What is the primary purpose of Elasticsearch? AnswerTo provide distributed search and near real-time analytics 2. In Elasticsearch, what is an "Index" equivalent to in a SQL database? AnswerA Table 3. What format does Elasticsearch use to store documents? AnswerJSON 4. What is a "Shard" in Elasticsearch? AnswerA horizontal partition of data that allows an index to scale 5. What is the "Query DSL"? AnswerA JSON-based language used to define searches and filters 6. Which HTTP method is used to retrieve a document by its ID? AnswerGET 7. What is the role of "Kibana" in the ELK stack? AnswerTo provide a visual interface for data exploration and analysis 8. What is a "Replica Shard"? AnswerA copy of a primary shard used for failover and read scaling 9. Which port does Elasticsearch typically use for its REST API? Answer9200 10. What is an "Inverted Index"? AnswerA mapping of unique terms to the documents they appear in 11. Which Elasticsearch field type is used for "Full-Text Search"? Answertext 12. What is the purpose of "Mapping" in Elasticsearch? AnswerTo define the schema and data types of document fields 13. What is a "Node" in an Elasticsearch cluster? AnswerA single running instance of Elasticsearch in a cluster 14. In Kibana, what is the "Discover" tab used for? AnswerTo interactively explore, filter, and view raw document data 15. What does the "Match" query do in Elasticsearch? AnswerAnalyzes a search string and performs a full-text query 16. What is "Score" (\_score) in search results? AnswerA numeric value indicating document relevance to a query 17. What is the purpose of an "Alias" in Elasticsearch? AnswerTo provide a secondary name for one or more indexes 18. What is "Logstash" used for? AnswerTo ingest, transform, and ship data to Elasticsearch 19. What is an "Aggregations" query (aggs)? AnswerA way to summarize and group data for analytics 20. What is a "Mapping Conflict"? AnswerWhen a field is indexed with incompatible data types 21. Which tool focuses on lightweight data shipping in the Elastic Stack? AnswerBeats (Filebeat, Metricbeat) 22. What is the "Bulk API"? AnswerAn API for performing many index/delete operations at once 23. What does "Near Real-Time" (NRT) mean in Elasticsearch? AnswerThere is a slight delay before indexed data is searchable 24. What is the purpose of the "Term" query? AnswerTo find documents that contain an exact, unanalyzed value 25. What is "Lucene"? AnswerThe search library that Elasticsearch is built upon 26. In Kibana, what is an "Index Pattern"? AnswerA setting that tells Kibana which indices to visualize 27. What is "Split Brain" in a cluster? AnswerA state where two nodes both believe they are the Master 28. What is "Canvas" in Kibana? AnswerA data-driven presentation tool for infographic dashboards 29. Which command shows the health of an Elasticsearch cluster? AnswerGET /\_cluster/health 30. What is "Index Lifecycle Management" (ILM)? AnswerA way to automate the movement and deletion of indices ## Tags [#Elasticsearch](/quizzes/tags/elasticsearch)[#Full text search](/quizzes/tags/full-text-search)[#Search engines](/quizzes/tags/search-engines)[#Kibana](/quizzes/tags/kibana)[#Elk stack](/quizzes/tags/elk-stack)[#Logstash](/quizzes/tags/logstash)[#Beats](/quizzes/tags/beats)[#Query dsl](/quizzes/tags/query-dsl)[#Sharding](/quizzes/tags/sharding)[#Indexing](/quizzes/tags/indexing)[#Inverted indexes](/quizzes/tags/inverted-indexes)[#Aggregations](/quizzes/tags/aggregations)[#Ilm](/quizzes/tags/ilm)[#Log analysis](/quizzes/tags/log-analysis) ## Share [Facebook](https://facebook.com/sharer/sharer.php?u=https%3A%2F%2Fmkabumattar.com%2Fquizzes%2Fpost%2Felasticsearch-search-engine-fundamentals-quiz "Share on Facebook")[Twitter](https://twitter.com/intent/tweet/?text=Elasticsearch%3A%20Full-Text%20Search%20Engine%20Fundamentals&url=https%3A%2F%2Fmkabumattar.com%2Fquizzes%2Fpost%2Felasticsearch-search-engine-fundamentals-quiz "Share on Twitter")[LinkedIn](https://www.linkedin.com/shareArticle?mini=true&url=https%3A%2F%2Fmkabumattar.com%2Fquizzes%2Fpost%2Felasticsearch-search-engine-fundamentals-quiz&title=Elasticsearch%3A%20Full-Text%20Search%20Engine%20Fundamentals&summary=Test%20your%20knowledge%20on%20full-text%20search%2C%20document%20indexing%2C%20and%20log%20analysis%20using%20Elasticsearch%20and%20Kibana.&source=https://mkabumattar.com "Share on LinkedIn")[WhatsApp](https://wa.me/?text=Elasticsearch%3A%20Full-Text%20Search%20Engine%20Fundamentals%20https%3A%2F%2Fmkabumattar.com%2Fquizzes%2Fpost%2Felasticsearch-search-engine-fundamentals-quiz "Share on WhatsApp")[Telegram](https://t.me/share/url?url=https%3A%2F%2Fmkabumattar.com%2Fquizzes%2Fpost%2Felasticsearch-search-engine-fundamentals-quiz&text=Elasticsearch%3A%20Full-Text%20Search%20Engine%20Fundamentals "Share on Telegram")[Reddit](https://www.reddit.com/submit?url=https%3A%2F%2Fmkabumattar.com%2Fquizzes%2Fpost%2Felasticsearch-search-engine-fundamentals-quiz&title=Elasticsearch%3A%20Full-Text%20Search%20Engine%20Fundamentals "Share on Reddit")[Hacker News](http://news.ycombinator.com/submitlink?u=https%3A%2F%2Fmkabumattar.com%2Fquizzes%2Fpost%2Felasticsearch-search-engine-fundamentals-quiz&t=Elasticsearch%3A%20Full-Text%20Search%20Engine%20Fundamentals "Share on Hacker News")[Pinterest](https://pinterest.com/pin/create/button/?url=https%3A%2F%2Fmkabumattar.com%2Fquizzes%2Fpost%2Felasticsearch-search-engine-fundamentals-quiz&media=&description=Test%20your%20knowledge%20on%20full-text%20search%2C%20document%20indexing%2C%20and%20log%20analysis%20using%20Elasticsearch%20and%20Kibana. 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