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NEW QUESTION 30
A Developer wants to upload data to Amazon S3 and must encrypt the data in transit.
Which of the following solutions will accomplish this task? (Choose two.)

A. Set up Server-Side Encryption with S3-Managed KeysB. Transfer the data over an SSL connectionC. Set up hardware VPN tunnels to a VPC and access S3 through a VPC endpointD. Set up Server-Side Encryption with AWS KMS-Managed KeysE. Set up Client-Side Encryption with an AWS KMS-Managed Customer Master Key

Answer: B,E

Explanation:
https://docs.aws.amazon.com/AmazonS3/latest/dev/UsingEncryption.html

 

NEW QUESTION 31
A Developer has written a serverless application using multiple AWS services. The business logic is written as a Lambda function which has dependencies on third-party libraries. The Lambda function endpoints will be exposed using Amazon API Gateway. The Lambda function will write the information to Amazon DynamoDB.
The Developer is ready to deploy the application but must have the ability to rollback. How can this deployment be automated, based on these requirements?

A. Create a bash script which uses AWS CLI to package and deploy the application.B. Use syntax conforming to the Serverless Application Model in the AWS CloudFormation template to define the Lambda function resource.C. Deploy using Amazon Lambda API operations to create the Lambda function by providing a deployment package.D. Use an AWS CloudFormation template and use CloudFormation syntax to define the Lambda function resource in the template.

Answer: B

Explanation:
Explanation
Refer AWS documentation - SAM Gradual Code Deployment
If you use AWS SAM to create your serverless application, it comes built-in with AWS CodeDeploy to help ensure safe Lambda deployments. With just a few lines of configuration, AWS SAM does the following for you:

Deploys new versions of your Lambda function, and automatically creates aliases that point to the new version.

Gradually shifts customer traffic to the new version until you're satisfied that it's working as expected, or you roll back the update.

Defines pre-traffic and post-traffic test functions to verify that the newly deployed code is configured correctly and your application operates as expected.

Rolls back the deployment if CloudWatch alarms are triggered.

 

NEW QUESTION 32
A developer is creating an application that is based on an AWS Lambda function The function uses the AWS SDK to read product price data from an Amazon S3 bucket and to write user information to an Amazon Aurora DB instance The Lambda function runs often, up to a few times each minute To meet performance requirements, the developer must minimize the run duration of the Lambda function Which actions can help the developer increase the performance? (Select TWO )

A. Read the S3 product price data initially, and cache it locally in the /tmp directory.B. Initialize SDK clients and database connections outside of the function handlerC. Use environment variables to pass operational parameters to the function.D. Use most-restrictive permissions when setting the 1AM policies for the Lambda 1AM role.E. Split the code into different Lambda functions to keep the functions smaller.

Answer: B,C

 

NEW QUESTION 33
A company is running a Docker application on Amazon ECS. The application must scale based on user load in the last 15 seconds.
How should a Developer instrument the code so that the requirement can be met?

A. Create a standard-resolution custom Amazon CloudWatch metric for user activity data, then publish data every 30 secondsB. Create a standard-resolution custom Amazon CloudWatch metric for user activity data, then publish data every 5 secondsC. Create a high-resolution custom Amazon CloudWatch metric for user activity data, then publish data every 30 secondsD. Create a high-resolution custom Amazon CloudWatch metric for user activity data, then publish data every 5 seconds

Answer: D

Explanation:
Explanation
https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/publishingMetrics.html#high-resolution-me

 

NEW QUESTION 34
A Developer is creating an Auto Scaling group whose instances need to publish a custom metric to Amazon CloudWatch.
Which method would be the MOST secure way to authenticate a CloudWatch PUT request?

A. Create an IAM user with PutMetricData permission, and modify the Auto Scaling launch configuration to inject the user credentials into the instance user data.B. Create an IAM user with PutMetricData permission and put the user credentials in a private repository; have applications pull the credentials as needed.C. Create an IAM role with PutMetricData permission and modify the Auto Scaling launching configuration to launch instances using that role.D. Modify the CloudWatch metric policies to allow the PutMetricData permission to instances from the Auto Scaling group.

Answer: C

 

NEW QUESTION 35
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