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AWS Certified DevOps Engineer - Professional이 되기 위해서는 후보자는 AWS 서비스를 실제로 다뤄본 경험이 있어야 하며 DOP-C01 시험을 통과해야 합니다. 이 인증은 DevOps 전문가들이 잠재적인 고용주에게 자신의 기술과 지식을 증명하고 분야에서 진출할 수 있는 뛰어난 방법입니다.

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DOP-C01 시험은 지속적인 전달과 배포, 인프라스트럭처 as 코드, 모니터링 및 로깅, 자동화 및 보안을 포함한 DevOps 실천과 원칙에 관련된 다양한 주제를 다룹니다. 이 시험은 후보자가 AWS에서 DevOps 실천을 설계, 구현 및 관리할 수 있는 능력과 다양한 AWS 서비스 및 도구의 숙련도를 검증하기 위해 설계되었습니다.

최신 AWS Certified DevOps Engineer AWS-DevOps-Engineer-Professional 무료샘플문제 (Q381-Q386):

질문 # 381
You set up a scalable continuous integration platform on AWS.
The platform consists of a master node that can delegate project build jobs to multiple slave nodes, all running on Amazon EC2.
The build output will be stored in Amazon S3.
You always have five slave nodes deployed. Each slave node can handle 10 build jobs simultaneously.
Your master node publishes a custom Amazon CloudWatch metric with the name
"RunningBuildiobs" that Slows you to programmatically track how many build jobs are running across your platform.
Which two configuration options will allow you to flexibly scale your platform to support more than
50 simultaneous build jobs while minimizing costs? Choose 2 answers

A. Place your fleet of slave nodes in an Auto Scaling group.
Configure a CloudWatch alarm that triggers an Auto Scaling policy to launch Amazon EC2 Instances when "RunningBuildJobs" is greater than 45 for more than five minutes.
B. Run your fleet of slave nodes in an Auto Scaling group.
Configure a Cloudwatch alarm that launches new Amazon EC2 Dedicated Instances when
"RunningBuildJobs" is less than 40 for more than five minutes.
C. Configure your fleet of slave nodes to fully utilize all of your purchased Amazon EC2 Heavy Utilization Reserved Instances.
Configure a CloudWatch alarm that launches new Amazon EC2 instances when
"RunningBuildJobs" is less than 40 for more than five minutes.
D. Place your fleet of slave nodes in an Auto Scaling group.
Configure a CloudWatch alarm that triggers an Auto Scaling policy to terminate Amazon EC2 instances when "RunningBuildJobs" is less than 40 for more than five minutes.
E. Configure a CloudWatch alarm that sends an alert when "RunningBuildJobs" is greater than 45 for more than five minutes.
Use Amazon Simple Queue Service to process additional build jobs when the CloudWatch alarm is triggered.

정답：A,D

질문 # 382
How does Amazon RDS multi Availability Zone model work?

A. A second, standby database is deployed and maintained in a different region from master using synchronous replication.
B. A second, standby database is deployed and maintained in a different availability zone from master using asynchronous replication.
C. A second, standby database is deployed and maintained in a different region from master using asynchronous replication.
D. A second, standby database is deployed and maintained in a different availability zone from master, using synchronous replication.

정답：D

설명：
In a Multi-AZ deployment, Amazon RDS automatically provisions and maintains a synchronous standby replica in a different Availability Zone.
http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Concepts.MultiAZ.html

질문 # 383
You have a set of EC2 Instances hosting an nginx server and a web application that is used by a set of users in your organization. After a recent application version upgrade, the instance runs into technical issues and needs an immediate restart. This does not give you enough time to inspect the cause of the issue on the server. Which of the following options if implemented prior to the incident would have assisted in detecting the underlying cause of the issue?

A. Enabledetailed monitoring and check the Cloudwatch metrics to see the cause of theissue.
B. Streamall the data to Amazon Kinesis and then analyze the data in real time.
C. Createa snapshot of the EBS volume before restart, attach it to another instance as avolume and then diagnose the issue.
D. Install Cloudwatch logs agent on the instance and send all the logs to Cloudwatch logs.

정답：D

설명：
Explanation
The AWS documentation mentions the following
You can publish log data from Amazon CC2 instances running Linux or Windows Server, and logged events from AWS CloudTrail. CloudWatch Logs can consume logs from resources in any region, but you can only view the log data in the CloudWatch console in the regions where CloudWatch Logs is supported.
Option A is invalid as detailed monitoring will only help us to get more information about the performance metrics of the instances, volumes etc and will not be able to provide full information regarding technical issues.
Option B is incorrect if we had created a snapshot prior to the update it might be useful but not after the incident.
Option C is incorrect here we are dealing with an issue concerning the underlying application that handles the data so this solution will not help.
For more information on Cloudwatch logs, please refer to the below link:
* http://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/StartTheCW
LAgent.html

질문 # 384
A DevOps Engineer at a startup cloud-based gaming company has the task formalizing deployment strategies. The strategies must meet the following requirements:
- Use standard Git commands, such as git clone and git push for the
code repository.
- Management tools should maximize the use of platform solutions where
possible.
- Deployment packages must be immutable and in the form of Docker
images.
How can the Engineer meet these requirements?

A. Use AWS CodePipeline to trigger a build process when software is pushed to a self-hosted GitHub repository.
CodePipeline will use a Jenkins build server to build new Docker images.
CodePipeline will deploy into a second target group in Amazon ECS behind an Application Load Balancer.
Cutover will be managed by swapping the listener rules on the Application Load Balancer.
B. Use AWS CodePipeline to trigger a build process when software is pushed to an AWS CodeCommit repository CodePipeline will use an AWS CodeBuild build server to build new Docker images.
CodePipeline will deploy into a second target group in a Kubernetes Cluster hosted on Amazon EC2 behind an Application Load Balancer.
Cutover will be managed by swapping the listener rules on the Application Load Balancer.
C. Use AWS CodePipeline to trigger a build process when software is pushed to a private GitHub repository.
CodePipeline will use AWS CodeBuild to build new Docker images.
CodePipeline will deploy into a second target group in Amazon ECS behind an Application Load Balancer.
Cutover will be managed by swapping the listener rules on the Application Load Balancer.
D. Use a Jenkins pipeline to trigger a build process when software is pushed to a private GitHub repository.
AWS CodePipeline will use AWS CodeBuild new Docker images.
CodePipeline will deploy into a second target group in Amazon ECS behind an Application Load Balancer.
Cutover will be managed by swapping the listener rules on the Application Load Balancer.

정답：C

질문 # 385
A healthcare services company is concerned about the growing costs of software licensing for an application for monitoring patient wellness. The company wants to create an audit process to ensure that the application is running exclusively on Amazon EC2 Dedicated Hosts. A DevOps Engineer must create a workflow to audit the application to ensure compliance. What steps should the Engineer take to meet this requirement with the LEAST administrative overhead?

A. Use AWS CloudTrail. Identify all EC2 instances to be audited by analyzing all calls to the EC2 RunCommand API action. Invoke an AWS Lambda function that analyzes the host placement of the instance. Store the EC2 instance ID of noncompliant resources in an Amazon RDS MySOL DB instance. Generate a report by querying the RDS instance and exporting the query results to a CSV text file.
B. Use AWS Systems Manager Configuration Compliance. Use calls to the put-compliance- items API action to scan and build a database of noncompliant EC2 instances based on their host placement configuration. Use an Amazon DynamoDB table to store these instance IDs for fast access. Generate a report through Systems Manager by calling the list-compliance- summaries API action.
C. Use custom Java code running on an EC2 instance. Set up EC2 Auto Scaling for the instance depending on the number of instances to be checked. Send the list of noncompliant EC2 instance IDs to an Amazon SQS queue. Set up another worker instance to process instance IDs from the SQS queue and write them to Amazon DynamoDB. Use an AWS Lambda function to terminate noncompliant instance IDs obtained from the queue, and send them to an Amazon SNS email topic for distribution.
D. Use AWS Config. Identify all EC2 instances to be audited by enabling Config Recording on all Amazon EC2 resources for the region. Create a custom AWS Config rule that triggers an AWS Lambda function by using the "config-rule-change-triggered" blueprint. Modify the Lambda evaluateCompliance () function to verify host placement to return a NON_COMPLIANT result if the instance is not running on an EC2 Dedicated Host. Use the AWS Config report to address noncompliant instances.

정답：B

질문 # 386
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