AWS Certified Solutions Architect Associate SAA-C03 Practice Question
A Solutions Architect is tasked with ensuring a mission-critical application maintains high availability, even in the event of a regional disruption. This involves establishing a redundant environment with seamless failover capabilities. What action should the Architect take to ensure that operational limits are not exceeded in the secondary location upon failover, preventing disruption of services due to throttling?
Configure autoscaling policies to respond to traffic increases, thereby managing operational thresholds appropriately.
Proactively increase operational limits in the secondary location to align with those already in place at the primary site.
Create a system of triggered alarms to elevate operational limits dynamically upon detecting higher traffic.
Depend on the default operational thresholds, anticipating they will be sufficient for the standby workload.
The correct answer is the proactive increase of operational limits in the secondary location to match those of the primary. This is important because service operational limits are enforced per account, per service, and per region. If these are not prepared ahead of time, the failover environment may experience throttling as it attempts to suddenly scale to production levels of traffic, exceeding the default service operational limits. The other options do not appropriately prevent service disruptions from throttling in a secondary environment because they are reactive measures or assume defaults will suffice, which is often not the case for mission-critical applications expecting a like-for-like failover capacity.
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