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Exam AWS Certified Solutions Architect - Professional SAP-C02 topic 1 question 69 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Professional SAP-C02
Question #: 69
Topic #: 1
[All AWS Certified Solutions Architect - Professional SAP-C02 Questions]

A financial services company in North America plans to release a new online web application to its customers on AWS. The company will launch the application in the us-east-1 Region on Amazon EC2 instances. The application must be highly available and must dynamically scale to meet user traffic. The company also wants to implement a disaster recovery environment for the application in the us-west-1 Region by using active-passive failover.

Which solution will meet these requirements?

  • A. Create a VPC in us-east-1 and a VPC in us-west-1. Configure VPC peering. In the us-east-1 VPC, create an Application Load Balancer (ALB) that extends across multiple Availability Zones in both VPCs. Create an Auto Scaling group that deploys the EC2 instances across the multiple Availability Zones in both VPCs. Place the Auto Scaling group behind the ALB.
  • B. Create a VPC in us-east-1 and a VPC in us-west-1. In the us-east-1 VPC, create an Application Load Balancer (ALB) that extends across multiple Availability Zones in that VPC. Create an Auto Scaling group that deploys the EC2 instances across the multiple Availability Zones in the us-east-1 VPC. Place the Auto Scaling group behind the ALSet up the same configuration in the us-west-1 VPC. Create an Amazon Route 53 hosted zone. Create separate records for each ALEnable health checks to ensure high availability between Regions.
  • C. Create a VPC in us-east-1 and a VPC in us-west-1. In the us-east-1 VPC, create an Application Load Balancer (ALB) that extends across multiple Availability Zones in that VPCreate an Auto Scaling group that deploys the EC2 instances across the multiple Availability Zones in the us-east-1 VPPlace the Auto Scaling group behind the ALB. Set up the same configuration in the us-west-1 VPCreate an Amazon Route 53 hosted zone. Create separate records for each ALB. Enable health checks and configure a failover routing policy for each record.
  • D. Create a VPC in us-east-1 and a VPC in us-west-1. Configure VPC peering. In the us-east-1 VPC, create an Application Load Balancer (ALB) that extends across multiple Availability Zones in both VPCs. Create an Auto Scaling group that deploys the EC2 instances across the multiple Availability Zones in both VPCs. Place the Auto Scaling group behind the ALB. Create an Amazon Route 53 hosted zone. Create a record for the ALB.
Show Suggested Answer Hide Answer
Suggested Answer: C 🗳️
by masetromain at Jan. 14, 2023, 5:02 p.m.
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masetromain
Highly Voted 2 years, 5 months ago
Selected Answer: C
The correct answer is C. Choice C meets the requirements for the application to be highly available and to dynamically scale to meet user traffic, as well as implementing a disaster recovery environment in the us-west-1 Region through active-passive failover. In choice C, the company creates a VPC in us-east-1 and a VPC in us-west-1, and sets up an Application Load Balancer (ALB) and Auto Scaling group in both VPCs. The ALB extends across multiple Availability Zones in each VPC, and the Auto Scaling group deploys the EC2 instances across these Availability Zones. The Auto Scaling group is placed behind the ALB, which allows for automatic scaling of the instances to meet user traffic. An Amazon Route 53 hosted zone is also created, with separate records for each ALB. Health checks are enabled for each record, and a failover routing policy is configured. This allows for active-passive failover between the two regions, ensuring high availability for the application.
upvoted 19 times
masetromain
2 years, 5 months ago
Choice A, B, and D do not fully meet the requirements of the disaster recovery environment in the us-west-1 Region and the failover routing policy because they do not include the necessary configurations for active-passive failover. In choice A, the VPCs in us-east-1 and us-west-1 are peered and the Auto Scaling group and Application Load Balancer (ALB) are extended across multiple availability zones in both regions. However, there is no explicit failover routing policy configured, so it is not clear how the application would failover to the us-west-1 region in the event of an outage. Choice B, the VPCs in us-east-1 and us-west-1 are separate, and the configuration is replicated in both regions but there is no explicit failover routing policy configured, so it is not clear how the application would failover to the us-west-1 region in the event of an outage.
upvoted 6 times
masetromain
2 years, 5 months ago
Choice D is similar to choice A, the VPCs in us-east-1 and us-west-1 are peered and the Auto Scaling group and Application Load Balancer (ALB) are extended across multiple availability zones in both regions. However, there is no explicit failover routing policy configured, so it is not clear how the application would failover to the us-west-1 region in the event of an outage. Choice C is the correct answer as it includes all the necessary components for a disaster recovery environment in the us-west-1 region. It creates separate VPCs, Application Load Balancer, and Auto Scaling Group in both regions, and it enables health checks and configure a failover routing policy for each record. This ensures that in the event of an outage, the application can automatically failover to the us-west-1 region with minimal downtime.
upvoted 6 times
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zozza2023
Highly Voted 2 years, 5 months ago
Selected Answer: C
active-passive failover==>a failover routing policy within route 53
upvoted 7 times
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amministrazione
Most Recent 10 months ago
C. Create a VPC in us-east-1 and a VPC in us-west-1. In the us-east-1 VPC, create an Application Load Balancer (ALB) that extends across multiple Availability Zones in that VPCreate an Auto Scaling group that deploys the EC2 instances across the multiple Availability Zones in the us-east-1 VPPlace the Auto Scaling group behind the ALB. Set up the same configuration in the us-west-1 VPCreate an Amazon Route 53 hosted zone. Create separate records for each ALB. Enable health checks and configure a failover routing policy for each record.
upvoted 1 times
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NikkyDicky
2 years ago
Selected Answer: C
It's C
upvoted 1 times
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mfsec
2 years, 3 months ago
Selected Answer: C
C for DR
upvoted 2 times
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God_Is_Love
2 years, 4 months ago
Selected Answer: C
Active-Passive failover with primary and secondary records in Route53 https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/dns-failover-types.html https://d1tcczg8b21j1t.cloudfront.net/strapi-assets/32_Route_53_health_checks_4_64165fc533.png
upvoted 5 times
God_Is_Love
2 years, 4 months ago
VPC Peering is good for fully accessing all resources in a shared env but thats not asked here, so A and D gets eliminated. B does not mention the weighted routing config enable ment although setup is good. So answer is C
upvoted 3 times
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zhangyu20000
2 years, 5 months ago
C is correct
upvoted 3 times
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