CompTIA Cloud+ Practice Test

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Which HA solution involves multiple servers that handle requests concurrently but can assume the load of a member if that member fails?

Active-passive
Active-active
Passive-passive
Passive-active

The correct answer is: Active-active

The active-active high availability (HA) solution involves multiple servers that are all actively handling requests concurrently. This architecture allows each server to share the load and provide better resource utilization. In the event that one of the servers fails, the remaining servers can take over the workload of the failed server without any interruption in service. This redundancy ensures that the system remains operational and can handle the expected workload, enhancing overall reliability and performance. In contrast, other HA solutions may operate differently. For example, the active-passive setup typically involves one server handling all requests while the other servers remain on standby, ready to take over only when the active server fails. In passive configurations, services are not running on all members simultaneously, leading to less efficient load distribution. The passive-active and passive-passive setups also imply a lack of concurrent processing by all nodes, which doesn't align with the characteristics of an active-active solution. Thus, the active-active configuration stands out for its capability to maintain high availability and performance through concurrent operations and immediate failover capabilities.