AWS Certified SysOps Administrator – Associate (legacy) — Question 677

A company wants to launch a group of Amazon EC2 instances that need to communicate with each other with the lowest possible latency.
Which combination of actions should a SysOps administrator take when launching these instances? (Choose two.)

Answer options

• A. Launch instances in different VPCs with a VPN tunnel.
• B. Launch instances in different VPCs with VPC peering enabled.
• C. Launch instances in a cluster placement group.
• D. Launch instances in a spread placement group.
• E. Launch instances with enhanced networking enabled.

Correct answer: C, E

Explanation

A cluster placement group logically groups Amazon EC2 instances within a single Availability Zone to enable low-latency, high-throughput network performance. Enabling enhanced networking further reduces latency and jitter while increasing packet-per-second performance. Other options, such as spread placement groups or cross-VPC configurations, do not optimize for the lowest possible network latency.