Authentic Amazon Web Services Certification Exam SOA-C02 Questions Answers

For a disaster recovery (DR) plan with a 15-minute RTO and RPO, the most cost-effective steps include:

B: Configuring the Aurora cluster to replicate data to the DR region using the Aurora global database option. This allows continuous replication with typically low replication lag, meeting the 15-minute RPO requirement efficiently.

C: Pre-configuring the DR region with an ALB and an Auto Scaling group using the same configuration as the primary region. This ensures readiness and quick failover, aligning with the 15-minute RTO target.

These steps provide a robust disaster recovery setup that minimizes downtime and data loss while optimizing costs by using built-in AWS functionalities and avoiding over-provisioning. More information can be found in the AWS documentation on Aurora Global Databases Aurora Global Databases and disaster recovery planning AWS Disaster Recovery.

Since the EC2 instance is attempting to access the internet using HTTP (port 80) but is configured only to allow HTTPS (port 443) traffic, the security group needs adjustment:

Security Group Configuration: The outbound rules of the security group associated with the EC2 instance must allow traffic over HTTP. Add an outbound rule that enables port 80 to destination 0.0.0.0/0. This rule will allow the instance to send HTTP requests to any IP address on the internet.

Test Connectivity: After updating the security group, test the connectivity using the curl command again to ensure the configuration allows internet access via HTTP.

This change is necessary because the existing security group configuration does not permit outbound HTTP traffic, which is essential for accessing websites using HTTP.