Elasticsearch

Question 1: What is the minimum number of nodes for an Elasticsearch cluster in production environment ?

• 1

• 3

• 6

• 10

What is the ingest format in Elasticsearch ?

• CSV

• XML

• JSON

• TXT

A cluster of 6 nodes contains multiple indices, each is configured with a replica factor of 2. How many nodes can I afford to lose without losing data ?

• 1

• 2

• 3

• 4

I want to increase the write throughput of my Elasticsearch cluster, I increase :

• number of primary shards

• number of replica shards

I want to increase the read throughput of my Elasticsearch cluster, Iincrease :

• number of primary shards

• number of replica shards

What are the roles we can give to an Elasticsearch node :

• Data

• Master Eligible

• Coordinating

• Director

What is in Elasticsearch cluster state ?

• list of nodes

• list of shards and corresponding indices

• data

• index settings

What happen fi we lose the master node in an Elasticsearch cluster :

• we cannot index data in existing indices

• we cannot add or delete nodes in the cluster

• we cannot create new indices in the cluster

• we cannot query the cluster

To execute a search query against a specific index, retrieving a number N of documents, Elasticsearch will :

• identify the shards corresponding to the requested index in the cluster stateB

• search only on replica shards

• ask each shard matching the query only N documents

• sort document alphabeticaly

estion 11: What are the products being part of the Elastic Stack together with Elasticsearch :

• Logstash

• Prometheus

• Kibana

• Grafana