AWS-DevOps-Engineer-Professional 復習対策書、AWS-Solutions-Associate日本語 日本語版対策ガイド

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NO.1 Your system automatically provisions EIPs to EC2 instances in a VPC on boot. The system
provisions the
whole VPC and stack at once. You have two of them per VPC. On your new AWS account, your
attempt
to create a Development environment failed, after successfully creating Staging and Production
environments in the same region. What happened?
A. You didn't choose the Development version of the AMI you are using.
B. You didn't set the Development flag to true when deploying EC2 instances.
C. You hit the soft limit of 5 EIPs per region and requested a 6th.
D. You hit the soft limit of 2 VPCs per region and requested a 3rd.
Answer: C

AWS-DevOps-Engineer-Professional 技術   AWS-DevOps-Engineer-Professional 改訂   
Explanation:
There is a soft limit of 5 EIPs per Region for VPC on new accounts. The third environment could not
allocate the 6th EIP.
Reference: http://docs.aws.amazon.com/general/latest/gr/aws_service_limits.html#limits_vpc

NO.2 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:
2 -tier API
Data stored in DynamoDB or S3, depending on type
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 3 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 testing automation 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.
D. 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.
Answer: A
Explanation:
AWS recommends Blue-Green for zero-downtime deploys. Since you use DynamoDB, and neither
AWS
OpsWorks nor AWS Elastic Beanstalk directly supports DynamoDB, the option selecting
CloudFormation
and Blue-Green is correct.
You use various strategies to migrate the traffic from your current application stack (blue) to a new
version
of the application (green). This is a popular technique for deploying applications with zero downtime.
The
deployment services like AWS Elastic Beanstalk, AWS CloudFormation, or AWS OpsWorks are
particularly useful as they provide a simple way to clone your running application stack. You can set
up a
new version of your application (green) by simply cloning current version of the application (blue).
Reference: https://d0.awsstatic.com/whitepapers/overview-of-deployment-options-on-aws.pdf

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試験番号:AWS-DevOps-Engineer-Professional

試験科目:「AWS Certified DevOps Engineer - Professional」

一年間無料で問題集をアップデートするサービスを提供いたします

最近更新時間:2017-01-19

問題と解答:全102問 AWS-DevOps-Engineer-Professional 復習対策書

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試験番号:AWS-Solutions-Associate日本語

試験科目:「AWS Certified Solutions Architect - Associate (AWS-Solutions-Associate日本語版)」

一年間無料で問題集をアップデートするサービスを提供いたします

最近更新時間:2017-01-19

問題と解答:全445問 AWS-Solutions-Associate日本語 日本語版対策ガイド

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