AWS Certified Advanced Networking – Specialty (ANS-C00) — Question 138

Your company has placement groups in two different availability zones. There is a large project coming up and, although resilience is important, cost and speed are the most important factors. The servers in each placement group need to be able to achieve the highest speed possible.
How can this be achieved?

Answer options

• A. Create AMIs from all of the instances, terminate them, and deploy them all into one placement group.
• B. In the CLI, run the command "aws ec2 set-placement-group 1 " for all of the instances.
• C. Duplicate the VPC, peer the new VPC, create AMIs of the instances, terminate them, and redeploy them in two separate placement groups between the two VPCs.
• D. Peer the two placement groups using AWS PG Peering.

Correct answer: A

Explanation

The correct answer is A because consolidating all instances into a single placement group maximizes network performance and speed due to low-latency and high-bandwidth connectivity within the group. Option B is incorrect as the command does not effectively address the need for speed by consolidating instances. Option C complicates the architecture unnecessarily and does not focus on speed within a single placement group. Option D does not enhance performance as peering groups does not equate to placing instances in a single group for optimal speed.