Exam AWS Certified Solutions Architect - Professional SAP-C02 topic 1 question 192 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Professional SAP-C02

Question #: 192
Topic #: 1

[All AWS Certified Solutions Architect - Professional SAP-C02 Questions]

A company is running an application in the AWS Cloud. The core business logic is running on a set of Amazon EC2 instances in an Auto Scaling group. An Application Load Balancer (ALB) distributes traffic to the EC2 instances. Amazon Route 53 record api.example.com is pointing to the ALB.

The company's development team makes major updates to the business logic. The company has a rule that when changes are deployed, only 10% of customers can receive the new logic during a testing window. A customer must use the same version of the business logic during the testing window.

How should the company deploy the updates to meet these requirements?

A. Create a second ALB, and deploy the new logic to a set of EC2 instances in a new Auto Scaling group. Configure the ALB to distribute traffic to the EC2 instances. Update the Route 53 record to use weighted routing, and point the record to both of the ALBs.
B. Create a second target group that is referenced by the ALDeploy the new logic to EC2 instances in this new target group. Update the ALB listener rule to use weighted target groups. Configure ALB target group stickiness.
C. Create a new launch configuration for the Auto Scaling group. Specify the launch configuration to use the AutoScalingRollingUpdate policy, and set the MaxBatchSize option to 10. Replace the launch configuration on the Auto Scaling group. Deploy the changes.
D. Create a second Auto Scaling group that is referenced by the ALB. Deploy the new logic on a set of EC2 instances in this new Auto Scaling group. Change the ALB routing algorithm to least outstanding requests (LOR). Configure ALB session stickiness.

Show Suggested Answer

Suggested Answer: B 🗳️

by Roontha at May 27, 2023, 8:18 p.m.

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Comments

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career360guru

7 months ago

Selected Answer: B

B is better option considering the fact that a customer should get same business logic during testing window. This means we need session stickiness that only option B can provide.

upvoted 4 times

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Pupu86

7 months, 1 week ago

Selected Answer: B

This is canary deployment not blue/green

upvoted 3 times

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joleneinthebackyard

7 months, 4 weeks ago

Selected Answer: B

I was struggled between A and B because I overlooked this line "A customer must use the same version of the business logic during the testing window." So we need session stickiness in place, then B is the obvious choice.

upvoted 1 times

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aviathor

10 months, 2 weeks ago

The problem I have with B is that is does not mention stickiness. The problem I have with A is that the stickiness will work only as long as the DNS entry does not time out...

upvoted 1 times