Amazon Web Services AWS Certified DevOps Engineer - Professional DOP-C02 Question # 25 Topic 3 Discussion
DOP-C02 Exam Topic 3 Question 25 Discussion:
Question #: 25
Topic #: 3
A company’s web app runs on EC2 with a relational database. The company wants highly available multi-Region architecture with latency-based routing for global customers.
Which solution meets these requirements?
A.
ALB in each Region with Auto Scaling groups; Aurora global database with read replicas; Route 53 latency-based routing to ALBs.
B.
ALB in each Region with Auto Scaling groups; RDS primary in one Region with read replicas in others; Route 53 failover routing to ALBs.
C.
Elastic Beanstalk with ALB in each Region; Aurora global database with read replicas; CloudFront with custom origins for ALBs; Route 53 latency-based routing to CloudFront.
D.
Elastic Beanstalk with ALB in each Region; RDS primary in one Region with read replicas; CloudFront with custom origins for ALBs; Route 53 failover routing to CloudFront.
ALBs with Auto Scaling across AZs ensure high availability in each Region.
Aurora global database supports cross-Region read replicas with low latency for reads and is recommended for multi-Region high availability.
Route 53 latency-based routing sends users to the closest Region.
RDS without global database (Options B, D) has higher replication lag and less resilience.
Using CloudFront in front of ALBs (Options C and D) adds caching but is not required for latency-based routing and increases complexity.
[References:, Amazon Aurora Global Database, Route 53 Latency Routing, ]
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