Question 1

A Development team need to push an update to an application that is running on AWS Elastic Beanstalk. The business SLA states that the application must maintain full performance capabilities during updates whilst minimizing cost.

Which Elastic Beanstalk deployment policy should the development team select?

Options :

A : Immutable

B : Rolling

C : Rolling with additional batch

D : All at once

Answer: C

Question 2

A company is using an Amazon API Gateway REST API endpoint as a webhook to publish events from an on-premises source control management (SCM) system to Amazon EventBridge. The company has configured an EventBridge rule to listen for the events and to control application deployment in a central AWS account. The company needs to receive the same events across multiple receiver AWS accounts.

How can a developer meet these requirements without changing the configuration of the SCM system?

Options :

A : Deploy the API Gateway REST API to all the required AWS accounts. Use the same custom domain name for all the gateway endpoints so that a single SCM webhook can be used for all events from all accounts.

B : Deploy the API Gateway REST API to all the receiver AWS accounts. Create as many SCM webhooks as the number of AWS accounts.

C : Grant permission to the central AWS account for EventBridge to access the receiver AWS accounts. Add an EventBridge event bus on the receiver AWS accounts as the targets to the existing EventBridge rule.

D : Convert the API Gateway type from REST API to HTTP API.

Answer: C

Question 3

A company wants to test its web application more frequently. The company deploys the application by using a separate AWS CloudFormation stack for each environment. The company deploys the same CloudFormation template to each stack as the application progresses through the development lifecycle.

A developer needs to build in notifications for the quality assurance (QA) team. The developer wants the notifications to occur for new deployments in the final preproduction environment.

Which solution will meet these requirements?

Options :

A : Create an Amazon Simple Notification Service (Amazon SNS) topic. Subscribe the QA team to the Amazon SNS topic. Update the CloudFormation stack options to point to the SNS topic in the pre-production environment.

B : Create an AWS Lambda function that notifies the QA team. Create an Amazon EventBridge rule to invoke the Lambda function on the default event bus. Filter the events on the CloudFormation service and on the CloudFormation stack Amazon Resource Name (ARN).

C : Create an Amazon CloudWatch alarm that monitors the metrics from CloudFormation. Filter the metrics on the stack name and the stack status. Configure the CloudWatch alarm to notify the QA team.

D : Create an AWS Lambda function that notifies the QA team. Configure the event source mapping to receive events from CloudFormation. Specify the filtering values to limit invocations to the desired CloudFormation stack.

Answer: A

Question 4

You are working with a t2.small instance bastion host that has the AWS CLI installed to help manage all the AWS services installed on it. You would like to know the security group and the instance id of the current instance.

Which of the following will help you fetch the needed information?

Options :

A : Create an IAM role and attach it to your EC2 instance that helps you perform a 'describe' API call

B : Query the metadata at http://169.254.169.254/latest/meta-data

C : Query the user data at http://254.169.254.169/latest/meta-data

D : Query the user data at http://169.254.169.254/latest/user-data

Answer: B

Question 5

A static website is hosted on Amazon S3 using the bucket name of dctlabs.com. Some HTML pages on the site use JavaScript to download images that are located in the bucket https://dctlabsimages.s3.amazonaws.com/. Users have reported that the images are not being displayed.

What is the MOST likely cause?

Options :

A : Amazon S3 Transfer Acceleration should be enabled on the dctlabs.com bucket

B : Cross Origin Resource Sharing is not enabled on the dctlabsimages bucket

C : The dctlabsimages bucket is not in the same region as the dctlabs.com bucket

D : Cross Origin Resource Sharing is not enabled on the dctlabs.com bucket

Answer: B

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