You Currently Have the Following Setup in AWS: 1) an Elastic

question 396

Multiple Choice

You currently have the following setup in AWS: 1) An Elastic Load Balancer 2) Auto Scaling Group which launches EC2 Instances 3) AMIs with your code pre-installed You want to deploy the updates of your app to only a certain number of users. You want to have a cost-effective solution. You should also be able to revert back quickly. Which of the below solutions is the most feasible one?

• A) Create a second ELB, and a new Auto Scaling Group assigned a new Launch Configuration. Create a new AMI with the updated app. Use Route53 Weighted Round Robin records to adjust the proportion of traffic hitting the two ELBs.
• B) Create new AMIs with the new app. Then use the new EC2 instances in half proportion to the older instances.
• C) Redeploy with AWS Elastic Beanstalk and Elastic Beanstalk versions. Use Route 53 Weighted Round Robin records to adjust the proportion of traffic hitting the two ELBs
• D) Create a full second stack of instances, cut the DNS over to the new stack of instances, and change the DNS back if a rollback is needed.

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Definitions:

Experimental Starvation

A research setting where an organism is deliberately deprived of food for a period of time to study the physiological and psychological effects.

Re-fed

Refers to the process of reintroducing food to a person or animal after a period of fasting or severe undernutrition.

Set-Point

A hypothetical ratio of fat to lean tissue at which a person’s weight will tend to stabilize.

Experimental Overeating

A controlled study condition where individuals are asked to consume food in excess of their caloric needs to assess effects on health and behavior.