Question 30
An architecture review recommends this solution: Configure Global Accelerator listeners and healthy regional ALB or NLB endpoints. The motivating situation is: A global TCP service wants static public entry addresses and traffic steering over the AWS global network for lowest path latency. What principle supports the selected implementation?
Explanation
Correct Answer
This principle explains why the prescribed control is appropriate for the described requirement. The matching design action is: Configure Global Accelerator listeners and healthy regional ALB or NLB endpoints. The expected supporting evidence is: Clients use accelerator anycast addresses and connect to the healthy regional endpoint with improved path latency.
Incorrect Answers
Every static asset fetch goes to a distant origin instead of the edge cache. The stated evidence instead indicates: Region-specific public IPs and DNS routing do not provide the needed global anycast transport optimization.
Repeated retries of one failed message prevent useful error isolation and redrive workflow. The stated evidence instead indicates: Region-specific public IPs and DNS routing do not provide the needed global anycast transport optimization.
Instance-local caches cannot share consistent ephemeral state across horizontally scaled hosts. The stated evidence instead indicates: Region-specific public IPs and DNS routing do not provide the needed global anycast transport optimization.