Based on the exhibit, which AWS feature should the team use to minimize network latency between EC2 instances that exchange messages very frequently?

Use a spread placement group to maximize instance separation across hardware.

Spread placement groups increase isolation, but they do not optimize for the lowest possible latency between instances.

Use a partition placement group to distribute instances across many partitions.

Partition placement groups are better for reducing correlated hardware failures in large distributed systems, not for minimizing latency between tightly coupled nodes.

Use multiple Auto Scaling groups to spread traffic across more subnets.

More Auto Scaling groups do not reduce latency between the existing instances. This is a placement problem, not a scaling problem.

What does this SAA-C03 question test?

CIDR notation defines the prefix length.

What is the correct answer to this question?

The correct answer is: Use a cluster placement group to place instances close together. — The correct feature is a cluster placement group. The workload exchanges many small messages between instances and explicitly needs the lowest latency possible, which is exactly what cluster placement groups are meant for. They place instances close together in a way that improves inter-instance network performance. This is more appropriate than changing instance count or spreading instances for fault isolation. Why others are wrong: Spread placement groups improve resilience by separating instances, but that separation adds the opposite of what this workload needs. Partition placement groups are for large distributed applications that want failure isolation across partitions. Multiple Auto Scaling groups can change capacity, but they do not address inter-node network latency or physical placement.

What should I do if I get this SAA-C03 question wrong?

Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.