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NEW QUESTION 50
Your company has a set of EC2 Instances that access data objects stored in an S3 bucket. Your IT Security department is concerned about the security of this arhitecture and wants you to implement the following
1) Ensure that the EC2 Instance securely accesses the data objects stored in the S3 bucket
2) Ensure that the integrity of the objects stored in S3 is maintained.
Which of the following would help fulfil the requirements of the IT Security department. Choose 2 answers from the options given below

• A. Usean S3 bucket policy that ensures that MFA Delete is set on the objects in thebucket
• B. Createan IAM user and ensure the EC2 Instances uses the IAM user credentials toaccess the data in the bucket.
• C. Createan IAM Role and ensure the EC2 Instances uses the IAM Role to access the datain the bucket.
• D. UseS3 Cross Region replication to replicate the objects so that the integrity ofdata is maintained.

Answer: A,C

Explanation:
Explanation
The AWS Documentation mentions the following
I AM roles are designed so that your applications can securely make API requests from your instances, without requiring you to manage the security credentials that the applications use. Instead of creating and distributing your AWS credentials, you can delegate permission to make API requests using 1AM roles For more information on 1AM Roles, please refer to the below link:
* http://docs.aws.amazon.com/AWSCC2/latest/UserGuide/iam-roles-for-amazon-ec2.html MFS Delete can be used to add another layer of security to S3 Objects to prevent accidental deletion of objects. For more information on MFA Delete, please refer to the below link:
* https://aws.amazon.com/blogs/security/securing-access-to-aws-using-mfa-part-3/

NEW QUESTION 51
You were just hired as a DevOps Engineer for a startup. Your startup uses AWS for 100% of their
infrastructure. They currently have no automation at all for deployment, and they have had many failures
while trying to deploy to production.The company has told you deployment process risk mitigation is the most
important thing now, and you have a lot of budget for tools and AWS resources.
Their stack includes a 2-tier API with data stored in DynamoDB or S3, depending on type. The Compute layer
is EC2 in Auto Scaling Groups. They use Route53 for DNS pointing to an ELB. An ELB balances load across
the EC2 instances. The scaling group properly varies between 4 and 12 EC2 servers. Which of the following
approaches, given this company's stack and their priorities, best meets the company's needs?

• A. Model the stack in AWS Elastic Beanstalk as a single Application with multiple Environments. Use
  Elastic Beanstalk's Rolling Deploy option to progressively roll out application code changes when
  promoting across environments.
  B- Model the stack in three CloudFormation templates: Data layer, compute layer, and networking layer.
  Write stack deployment and integration testing automation following Blue-Green methodologies. *>/
• B. Model the stack in 1 CloudFormation template, to ensure consistency and dependency graph resolution.
  Write deployment and integration testingautomation following Rolling Deployment methodologies.
• C. Model the stack in AWS OpsWorks as a single Stack, with 1 compute layer and its associated ELB. Use
  Chef and App Deployments to automate Rolling Deployment.

Answer: C

Explanation:
Explanation
Here you are using 2 of the best practices for deployment, one is Blue Green Deployments and the other is
using Nested Cloudformation stacks.
The AWS Documentation mentions the below on nested stacks
As your infrastructure grows, common patterns can emerge in which you declare the same components in each
of your templates. You can separate out these
common components and create dedicated templates for them. That way, you can mix and match different
templates but use nested stacks to create a single,
unified stack. Nested stacks are stacks that create other stacks. To create nested stacks, use the
AWS::CloudFormation::Stackresource in your template to reference
other templates.
For more information on Cloudformation best practises, please visit the link:
* http://docs.aws.amazon.com/AWSCIoudFormation/latest/UserGuide/best-practices.
html For more information on Blue Green Deployment, please visit the link:
* https://dOawsstatic.com/whitepapers/AWS_Blue_Green_Deployments.pdf

NEW QUESTION 52
A company wants to migrate its content sharing web application hosted on Amazon EC2 to a serverless architecture. The company currently deploys changes to its application by creating a new Auto Scaling group of EC2 instances and a new Elastic Load Balancer and then shifting the traffic away using an Amazon Route
53 weighted routing policy
For its new serverless application, the company is planning to use Amazon API Gateway and AWS Lambda The company will need to update its deployment processes to work with the new application. It will also need to retain the ability to test new features on a small number of users before rolling the features out to the entire user base Which deployment strategy will meet these requirements?

• A. Use AWS Elastic Beanstalk to deploy API Gateway and Lambda functions When code needs to be changed, deploy a new version of the API and Lambda functions. Shift traffic gradually using an Elastic Beanstalk blue/green deployment.
• B. Use AWS CloudFormation to deploy API Gateway and Lambda functions using Lambda function versions When code needs to be changed, update the CloudFormation stack with the new Lambda code and update the API versions using a canary release strategy Promote the new version when testing is complete.
• C. Use AWS CDK to deploy API Gateway and Lambda functions. When code needs to be changed, update the AWS CloudFormation stack and deploy the new version of the APIs and Lambda functions. Use a Route 53 failover routing policy for the canary release strategy.
• D. Use AWS OpsWorks to deploy API Gateway in the service layer and Lambda functions in a custom layer. When code needs to be changed, use OpsWorks to perform a blue/green deployment and shift traffic gradually

Answer: B

NEW QUESTION 53
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