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AWS Certified Developer - Associate Questions and Answers

Question 33

A company runs an ecommerce application on AWS. The application stores data in an Amazon Aurora database.

A developer is adding a caching layer to the application. The caching strategy must ensure that the application always uses the most recent value for each data item.

Which caching strategy will meet these requirements?

Options:

A.

Implement a TTL strategy for every item that is saved in the cache.

B.

Implement a write-through strategy for every item that is created and updated.

C.

Implement a lazy loading strategy for every item that is loaded.

D.

Implement a read-through strategy for every item that is loaded.

Question 34

A company has a website that displays a daily newsletter. When a user visits the website, an AWS Lambda function processes the browser ' s request and queries the company ' s on-premises database to obtain the current newsletter. The newsletters are stored in English. The Lambda function uses the Amazon Translate TranslateText API operation to translate the newsletters, and the translation is displayed to the user.

Due to an increase in popularity, the website ' s response time has slowed. The database is overloaded. The company cannot change the database and needs a solution that improves the response time of the Lambda function.

Which solution meets these requirements?

Options:

A.

Change to asynchronous Lambda function invocation.

B.

Cache the translated newsletters in the Lambda /tmp directory.

C.

Enable TranslateText API caching.

D.

Change the Lambda function to use parallel processing.

Question 35

A developer has code that is stored in an Amazon S3 bucket. The code must be deployed as an AWS Lambda function across multiple accounts in the same AWS Region as the S3 bucket an AWS CloudPormation template that runs for each account will deploy the Lambda function.

What is the MOST secure way to allow CloudFormaton to access the Lambda Code in the S3 bucket?

Options:

A.

Grant the CloudFormation service role the S3 ListBucket and GetObject permissions. Add a bucket policy to Amazon S3 with the principal of " AWS " (account numbers)

B.

Grant the CloudFormation service row the S3 GetObfect permission. Add a Bucket policy to Amazon S3 with the principal of " ' "

C.

Use a service-based link to grant the Lambda function the S3 ListBucket and GetObject permissions by explicitly adding the S3 bucket ' s account number in the resource.

D.

Use a service-based link to grant the Lambda function the S3 GetObject permission Add a resource of " ** to allow access to the S3 bucket.

Question 36

A company wants to share information with a third party. The third party has an HTTP API endpoint that the company can use to share the information. The company has the required API key to access the HTTP API.

The company needs a way to manage the API key by using code. The integration of the API key with the application code cannot affect application performance.

Which solution will meet these requirements MOST securely?

Options:

A.

Store the API credentials in AWS Secrets Manager. Retrieve the API credentials at runtime by using the AWS SDK. Use the credentials to make the API call.

B.

Store the API credentials in a local code variable. Push the code to a secure Git repository. Use the local code variable at runtime to make the API call.

C.

Store the API credentials as an object in a private Amazon S3 bucket. Restrict access to the S3 object by using IAM policies. Retrieve the API credentials at runtime by using the AWS SDK. Use the credentials to make the API call.

D.

Store the API credentials in an Amazon DynamoDB table. Restrict access to the table by using resource-based policies. Retrieve the API credentials at runtime by using the AWS SDK. Use the credentials to make the API call.

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Total 546 questions