LFCA: Linux Foundation Certified IT Associate

By Linux Foundation · Question Mode

QuestionQ57

VerifiedCloud Computing Fundamentals

An IT associate has a web application running on multiple servers that is configured to scale according to CPU usage. The current configuration has a minimum size of 1 and a maximum size of 5 servers, and is designed to launch and distribute the instances across 3 Availability Zones (AZs). During a period of low utilization, an entire AZ failed, and the application experienced downtime. What can the IT associate do to improve the application's availability?

Explanation

An Auto Scaling group's minimum capacity prevents scaling policies from reducing desired capacity below that value. Setting the minimum to 2 ensures at least two instances remain running during low utilization, so capacity can be distributed across Availability Zones and a surviving instance can continue serving traffic after a single-AZ failure. AWS documents that Auto Scaling maintains instances across enabled Availability Zones and that its balanced strategy supports Availability Zone redundancy.

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