Task Statement 3.1: Implement Highly Available Solutions to Meet Resilience and Business Requirements. DOP-C02 Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   Which configuration is necessary for an application to operate across multiple Availability Zones with minimal downtime?

   • ADeploying all instances in a single Availability Zone with a larger instance type
   • BUsing a single EC2 instance with an Elastic IP address
   • CDeploying application instances in at least two Availability Zones behind a load balancer
   • DConfiguring the application to use only local storage
   Reveal Solution Discussion Select an answer first
2. 17foundation · easy

   What is the primary purpose of configuring health checks on a load balancer?

   • ATo automatically route traffic only to healthy targets
   • BTo encrypt traffic between clients and the load balancer
   • CTo route traffic based on the client's geographic location
   • DTo scale the number of targets automatically
   Reveal Solution Discussion Select an answer first
4. 18foundation · easy

   Which AWS service can be used to enable cross-Region failover for a web application by routing users to a healthy endpoint in another Region?

   • AAmazon Route 53
   • BAmazon S3
   • CAWS CloudFormation
   • DAWS IAM
   Reveal Solution Discussion Select an answer first
5. 19application · medium

   A retail company runs a customer-facing application on EC2 instances in two Availability Zones. The instances are in an Auto Scaling group with a minimum of 2 and maximum of 10 instances. The application uses an Application Load Balancer (ALB) to distribute traffic. During a recent sales event, the application experienced increased latency, and the DevOps team noticed that the ALB was not distributing traffic evenly across the instances. What should the DevOps engineer do to resolve this issue?

   • AIncrease the minimum size of the Auto Scaling group to 4 instances.
   • BEnable cross-zone load balancing on the ALB.
   • CConfigure the ALB to use the least outstanding requests routing algorithm.
   • DCreate a new target group for each Availability Zone and attach them to the ALB.
   Reveal Solution Discussion Select an answer first
6. 20expert · hard

   A company runs a global e-commerce platform that uses Amazon CloudFront to serve static and dynamic content. The origin is an Application Load Balancer (ALB) in the us-east-1 Region. The company wants to improve resilience by adding a second origin in the eu-west-1 Region. Which solution should the company implement to ensure that CloudFront can automatically fail over to the second origin?

   • ACreate an origin group in CloudFront with the primary origin as the ALB in us-east-1 and the secondary origin as the ALB in eu-west-1. Configure the origin group with a failover criterion based on HTTP 5xx status codes.
   • BCreate a second CloudFront distribution with an alternate domain name and use Amazon Route 53 to route traffic to the second distribution during a failure.
   • CUse Amazon S3 as the origin for CloudFront and enable Cross-Region Replication to replicate the content to a bucket in eu-west-1.
   • DConfigure CloudFront to use a custom origin with a failover routing policy in Amazon Route 53.
   Reveal Solution Discussion Select an answer first