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The AWS-DevOps certification exam covers a wide range of topics, including continuous integration and delivery, infrastructure automation, monitoring and logging, security, and compliance. Candidates must have a deep understanding of AWS services such as CodePipeline, CodeDeploy, Elastic Beanstalk, CloudFormation, and CloudWatch, as well as proficiency in scripting languages such as Python and Ruby. AWS Certified DevOps Engineer - Professional certification exam is intended for experienced IT professionals who have a minimum of two years of experience in DevOps, as well as familiarity with AWS cloud computing services. Achieving this certification demonstrates a high level of expertise in DevOps practices and AWS technologies, which can lead to career advancement and increased earning potential.

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Amazon DOP-C01 certification exam is an advanced level certification offered by Amazon Web Services (AWS) for DevOps professionals. AWS Certified DevOps Engineer - Professional certification exam is designed to test the candidate's knowledge and skills related to DevOps practices and principles, as well as their ability to design, deploy, and manage AWS services and systems in a DevOps environment.

Amazon AWS Certified DevOps Engineer - Professional Sample Questions (Q280-Q285):

NEW QUESTION # 280
You have a set of web servers hosted in A WS which host a web application used by a section of users. You want to monitor the number of errors which occur when using the web application. Which of the below options can be used for this purpose. Choose 3 answers from the options given below.

A. Searchfor the keyword "ERROR" in the log files on the server.
B. Searchforthe keyword "ERROR" in Cloudwatch logs.
C. Incrementa metric filter in Cloudwatch whenever the pattern is matched.
D. Sendthe logs from the instances onto Cloudwatch logs.

Answer: B,C,D

Explanation:
Explanation
The AWS documentation mentions the following
You use metric filters to search for and match terms, phrases, or values in your log events. When a metric filter finds one of the terms, phrases, or values in your log events, you can increment the value of a CloudWatch metric. For example, you can create a metric filter to search for and count the occurrence of the word CRRORin your log events.
For more information on Cloudwatch logs - Filter and pattern matching, please refer to the below link:
http://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/FilterAndPatternSyntax.html

NEW QUESTION # 281
Which deployment method, when using AWS Auto Scaling Groups and Auto Scaling Launch
Configurations, enables the shortest time to live for individual servers?

A. Using a Dockerfile bootstrap on instance launch.
B. Using AWS EC2 Run Commands to dynamically SSH into fleets.
C. Pre-baking AMIs with all code and configuration on deploys.
D. Using UserData bootstrapping scripts.

Answer: C

Explanation:
Note that the bootstrapping process can be slower if you have a complex application or multiple
applications to install. Managing a fleet of applications with several build tools and dependencies can be a
challenging task during rollouts. Furthermore, your deployment service should be designed to do faster
rollouts to take advantage of Auto Scaling. Prebaking is a process of embedding a significant portion of
your application artifacts within your base AMI. During the deployment process you can customize
application installations by using EC2 instance artifacts such as instance tags, instance metadata, and
Auto Scaling groups.
Reference: https://d0.awsstatic.com/whitepapers/overview-of-deployment-options-on-aws.pdf

NEW QUESTION # 282
A rapidly growing company wants to scale for Developer demand for AWS development environments.
Development environments are created manually in the AWS Management Console. The Networking team uses AWS CloudFormation to manage the networking infrastructure, exporting stack output values for the Amazon VPC and all subnets. The development environments have common standards, such as Application Load Balancers, Amazon EC2 Auto Scaling groups, security groups, and Amazon DynamoDB tables.
To keep up with the demand, the DevOps Engineer wants to automate the creation of development environments. Because the infrastructure required to support the application is expected to grow, there must be a way to easily update the deployed infrastructure. CloudFormation will be used to create a template for the development environments.
Which approach will meet these requirements and quickly provide consistent AWS environments for Developers?

A. Use nested stacks to define common infrastructure components. To access the exported values, use TemplateURL to reference the Networking team's template. To retrieve Virtual Private Cloud (VPC) and subnet values, use Fn::ImportValue intrinsic functions in the Parameters section of the master template. Use the CreateChangeSet and ExecuteChangeSet commands to update existing development environments.
B. Use nested stacks to define common infrastructure components. Use Fn::ImportValue intrinsic functions with the resources of the nested stack to retrieve Virtual Private Cloud (VPC) and subnet values. Use the CreateChangeSet and ExecuteChangeSet commands to update existing development environments.
C. Use Fn:ImportValue intrinsic functions in the Resources section of the template to retrieve Virtual Private Cloud (VPC) and subnet values. Use CloudFormation StackSets for the development environments, using the Count input parameter to indicate the number of environments needed. use the UpdateStackSet command to update existing development environments.
D. Use Fn:ImportValue intrinsic functions in the Parameters section of the master template to retrieve Virtual Private Cloud (VPC) and subnet values. Define the development resources in the order they need to be created in the CloudFormation nested stacks. Use the CreateChangeSet and ExecuteChangeSet commands to update existing development environments.

Answer: C

NEW QUESTION # 283
A DevOps Engineer is leading the implementation for automating patching of Windows-based workstations in a hybrid cloud environment by using AWS Systems Manager (SSM). What steps should the Engineer follow to set up Systems Manager to automate patching in this environment?
(Select TWO.)

A. Run AWS Config to create a list of instances that are unpatched and not compliant. Create an instance scheduler job, and through an AWS Lambda function, perform the instance patching to bring them up to compliance.
B. Create multiple IAM service roles for Systems Manager so that the ssm amazonaws.com service can execute the AssumeRole operation on every instance. Register the role on a per-resource level to enable the creation of a service token. Perform managed-instance activation with the newly created service role attached to each managed instance.
C. Create an IAM service role for Systems Manager so that the ssm amazonaws.com service can execute the AssumeRole operation. Register the role to enable the creation of a service token.
Perform managed-instance activation with the newly created service role.
D. Using previously obtained activation codes and activation IDs, download and install the SSM Agent on the hybrid servers, and register the servers or virtual machines on the Systems Manager service.
Hybrid instances will show with an "i-" prefix in the SSM console as if they were provisioned as a regular Amazon EC2 instance.
E. Using previously obtained activation codes and activation IDs, download and install the SSM Agent on the hybrid servers, and register the servers or virtual machines on the Systems Manager service.
Hybrid instances will show with an "mi-" prefix in the SSM console.

Answer: C,E

NEW QUESTION # 284
The Ansible Inventory system allows many attributes to be defined within it. Which item below is not one of these?

A. Host groups
B. Include vars
C. Group variables
D. Children groups

Answer: B

Explanation:
Ansible inventory files cannot reference other files for additional data. If this functionality is needed, it must be done in as a script to create a dynamic inventory Reference: http://docs.ansible.com/ansible/intro_inventory.html

NEW QUESTION # 285
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