Splunk Core Certified User Practice Exam

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What is the minimum number of search heads required for a search head cluster?

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The correct answer is: Three

A search head cluster in Splunk requires a minimum of three search heads to ensure high availability and fault tolerance. This configuration allows the cluster to maintain service continuity in the event that one search head fails. With three search heads, the cluster can operate effectively, as it can tolerate the loss of one search head while still maintaining the ability to serve search requests. This setup also enables efficient coordination and load balancing among the search heads. In a scenario where two search heads are used, the cluster may become unavailable if one search head goes offline, as there would not be a sufficient majority of nodes to maintain quorum. Therefore, having three search heads is critical for the reliability and performance of the search head cluster.