AWS Certified Solutions Architect – Associate (SAA-C02) — Question 11

A gaming company has multiple Amazon EC2 instances in a single Availability Zone for its multiplayer game that communicates with users on Layer 4. The chief technology officer (CTO) wants to make the architecture highly available and cost-effective.
What should a solutions architect do to meet these requirements? (Choose two.)?

Answer options

• A. Increase the number of EC2 instances.
• B. Decrease the number of EC2 instances.
• C. Configure a Network Load Balancer in front of the EC2 instances.
• D. Configure an Application Load Balancer in front of the EC2 instances.
• E. Configure an Auto Scaling group to add or remove instances in multiple Availability Zones automatically.

Correct answer: C, E

Explanation

The correct answers, C and E, enhance availability and cost-effectiveness by distributing traffic with a Network Load Balancer and enabling automatic scaling across multiple Availability Zones. Increasing or decreasing the number of EC2 instances (A and B) does not directly improve availability, while using an Application Load Balancer (D) is not optimal for Layer 4 communication.