Elasticsearch MCQ Questions And Answers

Elasticsearch MCQs : This section focuses on "Basics" of Elasticsearch. These Multiple Choice Questions (MCQ) should be practiced to improve the Elasticsearch skills required for various interviews (campus interviews, walk-in interviews, company interviews), placements, entrance exams and other competitive examinations.

1. Elasticsearch Initial release?

A. 2009
B. 2010
C. 2011
D. 2012

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2. Elasticsearch Developer?

A. Elastic NV
B. Elastic AB
C. Elastic FB
D. Elastic ZV

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3. Programming language used in Elasticsearch?

A. C
B. C++
C. Java
D. Python

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4. The default Elasticsearch log level is?

A. Error
B. Trace
C. Warn
D. Info

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5. The Elasticsearch default communication port is?

A. 9300/tcp
B. 3000/ip
C. 9300/utp
D. 3000/tcp

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6. elasticsearch instance has a maximum disk size of?

A. 256 GiB
B. 512 GiB
C. 1024 GiB
D. 128 GiB

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7. Elasticsearch 7. x and later have a limit of ________ shards per node?

A. 1
B. 10
C. 100
D. 1000

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8. Which of the following is true about Elasticsearch?

A. Elasticsearch is a real-time distributed and open source full-text search and analytics engine.
B. Elasticsearch is scalable up to petabytes of structured and unstructured data
C. Both A and B
D. None of the above

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9. Which of the following collection of one or more nodes?

A. Node
B. Cluster
C. Index
D. Document

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10. Which of the following is a collection of fields in a specific manner defined in JSON format?

A. Node
B. Shard
C. Replicas
D. Document

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11. Which of the following are Advantages of elasticsearch?

A. Elasticsearch is real time
B. Elasticsearch is distributed
C. Elasticsearch uses JSON objects as responses
D. All of the above

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12. Which command to create an index?

A. PUT
B. USE
C. CREATE
D. SET

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13. Which versioning is the default version that starts with 1 and increments with each update, deletes included?

A. Internal
B. External
C. Both A and B
D. None of the above

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14. In URI Search, which parameter is used to specify query string?

A. lenient
B. Q
C. fields
D. sort

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15. In URI Search, which parameter denotes the number of hits to return?

A. from
B. terminate_after
C. size
D. timeout

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16. Elasticsearch can be used as a replacement of document stores like MongoDB and RavenDB.

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

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17. Handling multi-tenancy is very hard in Elasticsearch when compared to Apache Solr.

A. TRUE
B. Fasle
C. Can be true or false
D. Can not say

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18. Each shard in ElasticSearch has _____________ copy of the shard.

A. 4
B. 1
C. 2
D. 3

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19. A __________ breakdown fields values of a document into a stream, and inverted indexes are created and updates using these values, and these stream of values are stored in the document.

A. Analyzer
B. Shard
C. Filter
D. Tokenizer

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20. Which aggregation is used to get the average of any numeric field present in the aggregated documents?

A. Max
B. Min
C. Count
D. Avg

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