Question 1

A developer wrote an application that uses an AWS Lambda function to asynchronously generate short videos based on requests from customers. This video generation can take up to 10 minutes. After the video is generated, a URL to download the video is pushed to the customer's web browser. The customer should be able to access these videos for at least 3 hours after generation.

Which solution will meet these requirements?

Options :

A : Store the video in the /tmp folder within the Lambda execution environment. Push a Lambda function URL to the customer.

B : Store the video in an Amazon Elastic File System (Amazon EFS) file system attached to the function. Generate a pre-signed URL for the video object and push the URL to the customer.

C : Store the video in Amazon S3. Generate a pre-signed URL for the video object and push the URL to the customer.

D : Store the video in an Amazon CloudFront distribution. Generate a pre-signed URL for the video object and push the URL to the customer.

Answer: C

Question 2

A company is migrating an application with a website and MySQL database to the AWS Cloud. The company require the application to be refactored so it offers high availability and fault tolerance.

How should a Developer refactor the application? (Select TWO.)

Options :

A : Migrate the website to an Auto Scaling group of EC2 instances across a single AZ and use an Elastic Load Balancer

B : Migrate the MySQL database to an Amazon RDS Multi-AZ deployment

C : Migrate the MySQL database to an Amazon RDS instance with a Read Replica in another AZ

D : Migrate the website to an Auto Scaling group of EC2 instances across multiple AZs and use an Elastic Load Balancer

E : Migrate the MySQL database to an Amazon DynamoDB with Global Tables

Answer: B,D

Question 3

A Developer has updated an AWS Lambda function and published a new version. To ensure the code is working as expected the Developer needs to initially direct a percentage of traffic to the new version and gradually increase this over time. It is important to be able to rollback if there are any issues reported.

What is the BEST way the Developer can implement the migration to the new version SAFELY?

Options :

A : Use an immutable update with a new ASG to deploy the new version in parallel, following testing cutover to the new version

B : Create an Amazon Route 53 weighted routing policy pointing to the current and new versions, assign a lower weight to the new version

C : Create an Alias, assign the current and new versions and use traffic shifting to assign a percentage of traffic to the new version

D : Use an Amazon Elastic Load Balancer to direct a percentage of traffic to each target group containing the Lambda function versions

Answer: C

Question 4

A Developer needs to access AWS CodeCommit over SSH. The SSH keys configured to access AWS CodeCommit are tied to a user with the following permissions:

1. {

2. "version": "2012-10-17"

3. "Statement": [

4. {

5. "Effect": "Allow",

6. "Action": [

7. "codecommit:BatchGetRepositories",

8. "codecommit:Get*"

9. "codecommit:List*",

10. "codecommit:GitPull"

11. ],

12. "Resource": "*"

13. }

14. ]

15. }

The Developer needs to create/delete branches.

Which specific IAM permissions need to be added based on the principle of least privilege?

Options :

A : “codecommit:*”

B : “codecommit:CreateBranch” and “codecommit:DeleteBranch”

C : “codecommit:Put*:”

D : “codecommit:Update*”

Answer: B

Question 5

A developer has created a new Application Load Balancer but has not registered any targets with the target groups.

Which of the following errors would be generated by the Load Balancer?

Options :

A : HTTP 504: Gateway timeout

B : HTTP 502: Bad gateway

C : HTTP 500: Internal server error

D : HTTP 503: Service unavailable

Answer: D

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