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Questions # 1:

A developer is building a video search application. Video files average 2.5 TB in size. Files must have instant access for the first 90 days. After 90 days, files can take more than 10 minutes to load.

Which solution will meet these requirements in the MOST cost-effective way?

Options:
A.

Store files in Amazon EFS Standard, then transition to EFS Standard-IA.

B.

Store files in Amazon S3 Glacier Deep Archive for 90 days, then transition to S3 Glacier Flexible Retrieval.

C.

Store files in Amazon EBS for 90 days, then transition to S3 Glacier Deep Archive.

D.

Store files in Amazon S3 Glacier Instant Retrieval for 90 days, then transition to S3 Glacier Flexible Retrieval.

Expert Solution
Questions # 2:

A developer compiles an AWS Lambda function and packages the result as a .zip file. The developer uses the Functions page on the Lambda console to attempt to upload the local packaged .zip file. When pushing the package to Lambda, the console returns the following error:

Question # 2

Which solutions can the developer use to publish the code? (Select TWO.)

Options:
A.

Upload the package to Amazon S3. Use the Functions page on the Lambda console to upload the package from the S3 location.

B.

Create an AWS Support ticket to increase the maximum package size.

C.

Use the update-function-code AWS CLI command. Pass the -publish parameter.

D.

Repackage the Lambda function as a Docker container image. Upload the image to Amazon Elastic Container Registry {Amazon ECR). Create a new Lambda function by using the Lambda console. Reference the image that is deployed to Amazon ECR.

E.

Sign the .zip file digitally. Create a new Lambda function by using the Lambda console. Update the configuration of the new Lambda function to include the Amazon Resource Name (ARN) of the code signing configuration.

Expert Solution
Questions # 3:

A company is using Amazon OpenSearch Service to implement an audit monitoring system. A developer needs to create an AWS Cloudformation custom resource that is associated with an AWS Lambda function to configure the OpenSearch Service domain. The Lambda function must access the OpenSearch Service domain by using Open Search Service internal master user credentials.

What is the MOST secure way to pass these credentials to the Lambdas function?

Options:
A.

Use a CloudFormation parameter to pass the master user credentials at deployment to the OpenSearch Service domain's MasterUserOptions and the Lambda function's environment variable. Set the No Echo attenuate to true.

B.

Use a CloudFormation parameter to pass the master user credentials at deployment to the OpenSearch Service domain's MasterUserOptions and to create a parameter. In AWS Systems Manager Parameter Store. Set the No Echo attribute to true. Create an 1AM role that has the ssm GetParameter permission. Assign me role to the Lambda function. Store me parameter name as the Lambda function's environment variable. Resolve the parameter's value at runt

C.

Use a CloudFormation parameter to pass the master uses credentials at deployment to the OpenSearch Service domain's MasterUserOptions and the Lambda function's environment varleWe Encrypt the parameters value by using the AWS Key Management Service (AWS KMS) encrypt command.

D.

Use CloudFoimalion to create an AWS Secrets Manager Secret. Use a CloudFormation dynamic reference to retrieve the secret's value for the OpenSearch Service domain's MasterUserOptions. Create an 1AM role that has the secrets manager. GetSecretvalue permission. Assign the role to the Lambda Function Store the secrets name as the Lambda function's environment variable. Resole the secret's value at runtime.

Expert Solution
Questions # 4:

A software company is launching a multimedia application. The application will allow guest users to access sample content before the users decide if they want to create an account to gain full access. The company wants to implement an authentication process that can identify users who have already created an account. The company also needs to keep track of the number of guest users who eventually create an account.

Which combination of steps will meet these requirements? {Select TWO.)

Options:
A.

Create an Amazon Cognito user pool. Configure the user pool to allow unauthenticated users. Exchange user tokens for temporary credentials that allow authenticated users to assume a role.

B.

Create an Amazon Cognito identity pool. Configure the identity pool to allow unauthenticated users. Exchange unique identity for temporary credentials that allow all users to assume a role.

C.

Create an Amazon CloudFront distribution. Configure the distribution to allow unauthenticated users. Exchange user tokens for temporary credentials that allow all users to assume a role.

D.

Create a role for authenticated users that allows access to all content. Create a role for unauthenticated users that allows access to only the sample content.

E.

Allow all users to access the sample content by default. Create a role for authenticated users that allows access to the other content.

Expert Solution
Questions # 5:

A developer needs to use a code template to create an automated deployment of an application onto Amazon EC2 instances. The template must be configured to repeat deployment, installation, and updates of resources for the application. The template must be able to create identical environments and roll back to previous versions.

Which solution will meet these requirements?

Options:
A.

Use AWS Amplify for automatic deployment templates. Use a traffic-splitting deployment to copy any deployments. Modify any resources created by Amplify, if necessary.

B.

Use AWS CodeBuild for automatic deployment. Upload the required AppSpec file template. Save the appspec.yml file in the root directory folder of the revision. Specify the deployment group that includes the EC2 instances for the deployment.

C.

Use AWS CloudFormation to create an infrastructure template in JSON format to deploy the EC2 instances. Use Cloud Formation helper scripts to install the necessary software and to start the application. Call the scripts directly from the template.

D.

Use AWS AppSync to deploy the application. Upload the template as a GraphQL schema. Specify the EC2 instances for deployment of the application. Use resolvers as a version control mechanism and to make any updates to the deployments.

Expert Solution
Questions # 6:

A developer is writing a serverless application that requires an AWS Lambda function to be invoked every 10 minutes.

What is an automated and serverless way to invoke the function?

Options:
A.

Deploy an Amazon EC2 instance based on Linux, and edit its /etc/confab file by adding a command to periodically invoke the lambda function

B.

Configure an environment variable named PERIOD for the Lambda function. Set the value to 600.

C.

Create an Amazon EventBridge rule that runs on a regular schedule to invoke the Lambda function.

D.

Create an Amazon Simple Notification Service (Amazon SNS) topic that has a subscription to the Lambda function with a 600-second timer.

Expert Solution
Questions # 7:

A developer is modifying an AWS Lambda function that accesses an Amazon RDS for MySQL database. The developer discovers that the Lambda function has the database credentials stored as plaintext in the Lambda function code.

The developer must implement a solution to make the credentials more secure. The solution must include automated credential rotation every 30 days.

Which solution will meet these requirements?

Options:
A.

Move the credentials to a secret in AWS Secrets Manager. Modify the Lambda function to read from Secrets Manager. Set a schedule to rotate the secret every 30 days.

B.

Move the credentials to a secure string parameter in AWS Systems Manager Parameter Store. Modify the Lambda function to read from Parameter Store. Set a schedule to rotate the parameter every 30 days.

C.

Move the credentials to an encrypted Amazon S3 bucket. Modify the Lambda function to read from the S3 bucket. Configure S3 Object Lambda to rotate the credentials every 30 days.

D.

Move the credentials to a secure string parameter in AWS Systems Manager Parameter Store. Create an Amazon EventBridge rule to rotate the parameter every 30 days.

Expert Solution
Questions # 8:

A developer wants to add request validation to a production environment Amazon API Gateway API. The developer needs to test the changes

before the API is deployed to the production environment. For the test, the developer will send test requests to the API through a testing tool.

Which solution will meet these requirements with the LEAST operational overhead?

Options:
A.

Export the existing API to an OpenAPI file. Create a new API. Import the OpenAPI file. Modify the new API to add request validation. Perform the tests. Modify the existing API to add request validation. Deploy the existing API to production.

B.

Modify the existing API to add request validation. Deploy the updated API to a new API Gateway stage. Perform the tests. Deploy the updated API to the API Gateway production stage.

C.

Create a new API. Add the necessary resources and methods, including new request validation. Perform the tests. Modify the existing API to add request validation. Deploy the existing API to production.

D.

Clone the existing API. Modify the new API to add request validation. Perform the tests. Modify the existing API to add request validation. Deploy the existing API to production.

Expert Solution
Questions # 9:

A developer is working on a web application that requires selective activation of features. Features must remain hidden from end users until they are ready for release.

Which solution will meet these requirements?

Options:
A.

Create a feature flag configuration profile in AWS AppSync.

B.

Store prerelease data in DynamoDB and toggle visibility by using DynamoDB Streams.

C.

Create a feature flag configuration profile in AWS AppConfig. Activate and deactivate feature flags as needed.

D.

Store prerelease data in AWS Amplify DataStore and toggle visibility through synchronization.

Expert Solution
Questions # 10:

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.

Expert Solution
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