Exam AWS Certified Cloud Practitioner CLF-C02 topic 1 question 208 discussion

AD is across regions BE is across the smaller availability zones

A. Amazon Route 53 and D. AWS Global Accelerator.

A. Amazon Route 53: Amazon Route 53 is a scalable and highly available Domain Name System (DNS) web service. It supports routing policies that enable failover across different AWS Regions, ensuring high availability and low latency for end-users. D. AWS Global Accelerator: AWS Global Accelerator improves the availability and performance of your applications with local or global users. It uses the AWS global network to optimize the path from your users to your applications, improving the availability and performance of your applications by sending user traffic to the closest healthy endpoint. It supports failover across different AWS Regions for enhanced availability.

The question is high level and answers BCE are more low level mechanisms

A is one of the correct answer. https://aws.amazon.com/solutions/guidance/cross-region-failover-and-graceful-failback-on-aws/

Elastic Load Balancing automatically distributes your incoming traffic across multiple targets, such as EC2 instances, containers, and IP addresses, in one or more Availability Zones. It monitors the health of its registered targets, and routes traffic only to the healthy targets Elastic Load Balancing supports the following load balancers: Application Load Balancers, Network Load Balancers, Gateway Load Balancers, and Classic Load Balancers. The load balancer distributes incoming application traffic across multiple targets, such as EC2 instances, in multiple Availability Zones. This increases the availability of your application. Sources: https://aws.amazon.com/blogs/networking-and-content-delivery/using-load-balancer-target-group-health-thresholds-to-improve-availability/ https://docs.aws.amazon.com/elasticloadbalancing/

AD https://docs.aws.amazon.com/whitepapers/latest/real-time-communication-on-aws/cross-region-dns-based-load-balancing-and-failover.html

GPT: Amazon Route 53 (DNS Service): Latency Routing: Route 53 can be configured to route traffic based on the lowest network latency to provide a better user experience. AWS Global Accelerator: This service directs traffic over the AWS global network to optimal AWS endpoint based on health, geography, and routing policies.

A D are correct

https://docs.aws.amazon.com/whitepapers/latest/real-time-communication-on-aws/cross-region-dns-based-load-balancing-and-failover.html

B & E is correct. The Question is to get high availability and low latency by enabling failover.

AD are correct