When deploying to a Docker swarm, which section of the docker-compose file defines configuration related to the deployment and running of services?

• A.services
• B.build
• C.deploy
• D.args

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Your company has multiple applications running on AWS. Your company wants to develop a tool that notifies on-call teams immediately via email when an alarm is triggered in your environment. You have multiple on-call teams that work different shifts, and the tool should handle notifying the correct teams at the correct times. How should you implement this solution?

• A.Create an Amazon SNS topic and an Amazon SQS queue. Configure the Amazon SQS queue as a subscriber to the Amazon SNS topic.
  Configure CloudWatch alarms to notify this topic when an alarm is triggered. Create an Amazon EC2 Auto Scaling group with both minimum and desired Instances configured to 0. Worker nodes in this group spawn when messages are added to the queue. Workers then use Amazon Simple Email Service to send messages to your on call teams.
• B.Create an Amazon SNS topic and configure your on-call team email addresses as subscribers. Use the AWS SDK tools to integrate your application with Amazon SNS and send messages to this new topic.
  Notifications will be sent to on-call users when a CloudWatch alarm is triggered.
• C.Create an Amazon SNS topic and configure your on-call team email addresses as subscribers. Create a secondary Amazon SNS topic for alarms and configure your CloudWatch alarms to notify this topic when triggered. Create an HTTP subscriber to this topic that notifies your application via HTTP POST when an alarm is triggered. Use the AWS SDK tools to integrate your application with Amazon SNS and send messages to the first topic so that on-call engineers receive alerts.
• D.Create an Amazon SNS topic for each on-call group, and configure each of these with the team member emails as subscribers. Create another Amazon SNS topic and configure your CloudWatch alarms to notify this topic when triggered. Create an HTTP subscriber to this topic that notifies your application via HTTP POST when an alarm is triggered. Use the AWS SDK tools to integrate your application with Amazon SNS and send messages to the correct team topic when on shift.

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Currently, your deployment process consists of setting your load balancer to point to a maintenance page, turning off ea web application servers, deploying your code, turning the web application servers back on, and removing the maintenance page.
Working with your development team, you've agreed that performing rolling deployments of your software would provide a better user experience and a more agile deployment process.
Which techniques could you use to provide a cost-effective rolling deployment process? Choose
2 answers.

• A.Using Amazon Simple Workflow Service, create a workflow application that talks to the Amazon EC2 API to deploy your new code in a rolling fashion.
• B.Re-deploy your application on an AWS OpsWorks stack, and take advantage of OpsWorks rolling deployments.
• C.Re-deploy your application using an AWS CloudFormation template, launch a new CloudFormation stack during each deployment, and then tear down the old stack.
• D.Re-deploy your application using an AWS CloudFormation template with Auto Scaling group, and use update policies to provide rolling updates.
• E.Use the Amazon Elastic Cloud Compute (EC2) API to write a service to return a list of servers based on the tags for the application that needs deployment, and use Amazon Simple Queue Service to queue up all servers for a rolling deployment.
• F.Re-deploy your application on AWS Elastic Beanstalk, and use Elastic Beanstalk rolling deployments.

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A Solutions Architect is building a multi-tier website. The web servers will be in a public subnet, and the
database servers will be in a private subnet. Only the web servers can be accessed from the Internet. The
database servers must have Internet access for software updates.
Which solution meets the requirements?

• A.Allow Internet traffic on the private subnet through the network ACL.
• B.Use an egress-only Internet Gateway.
• C.Use a NAT Gateway.
• D.Assign Elastic IP addresses to the database instances.

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What flag would you use to limit a Docker container's memory usage to 128 megabytes?

• A.-memory 128m
• B.-m 128m
• C.--memory-reservation 128m
• D.-m 128MB

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