AWS-Certified-Developer-Associate Free Practice Test

- (Exam Topic 2)
A developer needs to create an application that supports Security Assertion Markup Language (SAML) and Facebook authentication It must also allow access to AWS services, such as Amazon DynamoDB.
Which AWS service or feature will meet these requirements with the LEAST amount of additional coding?

1. A. AWSAppSync
2. B. Amazon Cognito identity pools
3. C. Amazon Cognito user pools
4. D. Amazon Lambda@Edge

Correct Answer: B
Reference: https://aws.amazon.com/blogs/mobile/amazon-cognito-user-pools-supports-federation-with-saml/

- (Exam Topic 1)
A company is using Amazon API Gateway to manage access to a set of microservices implemented as AWS Lambda functions. Following a bug report, the company makes a minor breaking change to one of the APIs. In order to avoid impacting existing clients when the new API is deployed, the company wants to allow clients six months to migrate from v1 to v2.
Which approach should the Developer use to handle this change?

1. A. Update the underlying Lambda function and provide clients with the new Lambda invocation URL.
2. B. Use API Gateway to automatically propagate the change to clients, specifying 180 days in the phased deployment parameter.
3. C. Use API Gateway to deploy a new stage named v2 to the API and provide users with its URL.
4. D. Update the underlying Lambda function, create an Amazon CloudFront distribution with the updated Lambda function as its origin.

Correct Answer: C

- (Exam Topic 4)
A developer has an application that pushes files from an on-premises local server to an Amazon S3 bucket. The application uses an AWS access key and a secret key that are stored on the server for authentication. The application calls AWS Security Token Service (AWS STS) to assume a role with access to perform the S3 PUT operation to upload the file.
The developer is migrating the server to an Amazon EC2 instance. The EC2 instance is configured with an 1AM instance profile in the same AWS account that owns the S3 bucket.
What is the MOST secure solution for the developer to use to migrate the automation code?

1. A. Remove the code that calls the STS AssumeRole operatio
2. B. Use the same access key and secret key from the server to access the S3 bucket.
3. C. Remove the access key and the secret ke
4. D. Use the STS AssumeRole operation to add permissions to access the S3 bucket.
5. E. Remove the access key, the secret key, and the code that calls the STS AssumeRole operatio
6. F. Use an 1AM instance profile role that grants access to the S3 bucket.
7. G. Remove the access key, the secret key, and the code that calls the STS AssumeRole operatio
8. H. Create a new access key and secret ke
9. I. Use the new keys to access the S3 bucket.

Correct Answer: C

- (Exam Topic 2)
A company s website runs on an Amazon EC2 instance and uses Auto Scale the environment during peak times Website users across the world are experiencing high to sea latency due to static content on the EC2 instance, even during non-peak hours.
Which combination of steps will resolve the latency issue? (Select TWO )

1. A. Double the Auto Scaling group's maximum number of servers.
2. B. Host the application code on AWS Lambda
3. C. Scale vertically by resizing the EC2 instances
4. D. Create an Amazon CloudFront distribution to cache the static content
5. E. Store the application's static content in Amazon S3

Correct Answer: CD
Reference: https://aws.amazon.com/getting-started/tutorials/deliver-content-faster/

- (Exam Topic 3)
An ecommerce application is using Amazon Simple Notification Service (Amazon SNS) with an AWS Lambda subscription to save all new orders into an Amazon DynamoDB table The company wants to record all the orders that are more than a certain amount of money in a separate table The company wants to avoid changes to the processes that post orders to Amazon SNS or the current Lambda function that saves the orders to the DynamoDB table
How can a developer implement this feature with the LEAST change to the existing application?

1. A. Create another Lambda subscription with the SNS message attribute value matching a filter option to save the appropriate orders to a separate table
2. B. Create another SNS topic, and also send orders in that topic Create a Lambda subscription with a numeric value filter option to save the appropriate orders to a separate table
3. C. Create anotherftambda subscnption with the SNS message numeric value matching a filter option to save the appropriate orders to a separate table
4. D. Modify the Lambda code to filter the orders and save the appropriate orders to a separate table

Correct Answer: D