RELIABLE DOP-C01 LEARNING MATERIALS, NEW DOP-C01 TEST PREPARATION

Reliable DOP-C01 Learning Materials, New DOP-C01 Test Preparation

Reliable DOP-C01 Learning Materials, New DOP-C01 Test Preparation

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The AWS-DevOps certification exam consists of multiple-choice and multiple-response questions and is available in English, Japanese, Korean, and Simplified Chinese. DOP-C01 exam fee is $300, and the certification is valid for three years. Passing DOP-C01 exam demonstrates that the candidate has the skills and knowledge required to design, implement, and manage DevOps practices on the AWS platform, making them a valuable asset to any organization that uses AWS services. With the increasing adoption of cloud-based solutions, the demand for professionals with AWS-DevOps certification is on the rise, and this certification could help professionals take their career to the next level.

The Amazon DOP-C01 Exam is designed to test the knowledge and skills of individuals in various domains such as AWS services and tools, automation, monitoring, security, compliance, and governance. AWS Certified DevOps Engineer - Professional certification is intended to help professionals demonstrate their expertise in designing, managing and implementing DevOps engineering practices and solutions.

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Amazon AWS Certified DevOps Engineer - Professional Sample Questions (Q74-Q79):

NEW QUESTION # 74
Your application consists of 10% writes and 90% reads. You currently service all requests through a Route53 Alias Record directed towards an AWS ELB, which sits in front of an EC2 Auto Scaling Group. Your system is getting very expensive when there are large traffic spikes during certain news events, during which many more people request to read similar data all at the same time. What is the simplest and cheapest way to reduce costs and scale with spikes like this?

  • A. Create another ELB and Auto Scaling Group layer mounted on top of the other system, adding a tier to the system. Serve most read requests out of the top layer.
  • B. Create an S3 bucket and asynchronously replicate common requests responses into S3 objects.
    When a request comes in for a precomputed response, redirect to AWS S3.
  • C. Create a Memcached cluster in AWS ElastiCache. Create cache logic to serve requests which can be served late from the in-memory cache for increased performance.
  • D. Create a CloudFront Distribution and direct Route53 to the Distribution.
    Use the ELB as an Origin and specify Cache Behaviours to proxy cache requests which can be served late.

Answer: D

Explanation:
CloudFront is ideal for scenarios in which entire requests can be served out of a cache and usage patterns involve heavy reads and spikiness in demand.
A cache behavior is the set of rules you configure for a given URL pattern based on file extensions, file names, or any portion of a URL path on your website (e.g., *.jpg). You can configure multiple cache behaviors for your web distribution. Amazon CloudFront will match incoming viewer requests with your list of URL patterns, and if there is a match, the service will honor the cache behavior you configure for that URL pattern. Each cache behavior can include the following Amazon CloudFront configuration values:
origin server name, viewer connection protocol, minimum expiration period, query string parameters, cookies, and trusted signers for private content.
https://aws.amazon.com/cloudfront/dynamic-content/


NEW QUESTION # 75
After conducting a disaster recovery exercise, an Enterprise Architect discovers that a large team of Database and Storage Administrators need more than seven hours of manual effort to make a flagship application's database functional in a different AWS Region. The Architect also discovers that the recovered database is often missing as much as two hours of data transactions.
Which solution provides improved RTO and RPO in a cross-region failover scenario?

  • A. Deploy an Amazon RDS Multi-AZ instance backed by a multi-region Amazon EFS. Configure the RDS option group to enable multi-region availability for native automation of cross-region recovery and continuous data replication. Create an Amazon SNS topic subscribed to RDS-impacted events to send emails to the Database Administration team when significant query Latency is detected in a single Availability Zone.
  • B. Use Amazon SNS topics to receive published messages from Amazon RDS availability and backup events.
    Use AWS Lambda for three separate functions with calls to Amazon RDS to snapshot a database instance, create a cross-region snapshot copy, and restore an instance from a snapshot. Use a scheduled Amazon CloudWatch Events rule at a frequency matching the RPO to trigger the Lambda function to snapshot a database instance. Trigger the Lambda function to create a cross-region snapshot copy when the SNS topic for backup events receives a new message. Configure the Lambda function to restore an instance from a snapshot to trigger sending new messages published to the availability SNS topic.
  • C. Use Amazon RDS scheduled instance lifecycle events to create a snapshot and specify a frequency to match the RPO. Use Amazon RDS scheduled instance lifecycle event configuration to perform a cross- region snapshot copy into the failover region upon SnapshotCreateComplete events. Configure Amazon CloudWatch to alert when the CloudWatch RDS namespace CPUUtilization metric for the database instance falls to 0% and make a call to Amazon RDS to restore the database snapshot in the failover region.
  • D. Create a scheduled Amazon CloudWatch Events rule to make a call to Amazon RDS to create a snapshot from a database instance and specify a frequency to match the RPO. Create an AWS Step Functions task to call Amazon RDS to perform a cross-region snapshot copy into the failover region, and configure the state machine to execute the task when the RDS snapshot create state is complete. Create an SNS topic subscribed to RDS availability events, and push these messages to an Amazon SQS queue located in the failover region. Configure an Auto Scaling group of worker nodes to poll the queue for new messages and make a call to Amazon RDS to restore a database from a snapshot after a checksum on the cross-region copied snapshot returns valid.

Answer: B


NEW QUESTION # 76
A DevOps Engineer is designing a deployment strategy for a web application. The application will use an Auto Scaling group to launch Amazon EC2 instances using an AMI. The same infrastructure will be deployed in multiple environments (development, test, and quality assurance). The deployment strategy should meet the following requirements: " Minimize the startup time for the instance " Allow the same AMI to work in multiple environments " Store secrets for multiple environments securely How should this be accomplished?

  • A. Preconfigure the AMI using an AWS Lambda function that launches an Amazon EC2 instance, and then runs a script to install the software and create the AMI. Configure an Auto Scaling lifecycle hook to determine which environment the instance is launched in, and, based on that finding, run a configuration script. Save the secrets on an .ini file and store them in Amazon S3. Retrieve the secrets using a configuration script in EC2 user data.
  • B. Use a standard AMI from the AWS Marketplace. Configure Auto Scaling to detect the current environment. Install the software using a script in Amazon EC2 user data. Use AWS Secrets Manager to store the credentials for all environments.
  • C. Preconfigure the AMI by installing all the software using AWS Systems Manager automation and configure Auto Scaling to tag the instances at launch with their specific environment. Then use a bootstrap script in user data to read the tags and configure settings for the environment. Use the AWS Systems Manager Parameter Store to store the secrets using AWS KMS.
  • D. Preconfigure the AMI by installing all the software and configuration for all environments. Configure Auto Scaling to tag the instances at launch with their environment. Use the Amazon EC2 user data to trigger an AWS Lambda function that reads the instance ID and then reconfigures the setting for the proper environment. Use the AWS Systems Manager Parameter Store to store the secrets using AWS KMS.

Answer: A


NEW QUESTION # 77
To override an allow in an IAM policy, you set the Effect element to ______.

  • A. Block
  • B. Allow
  • C. Deny
  • D. Stop

Answer: C

Explanation:
By default, access to resources is denied. To allow access to a resource, you must set the Effect element to Allow. To override an allow (for example, to override an allow that is otherwise in force), you set the Effect element to Deny.
Reference:
http://docs.aws.amazon.com/IAM/latest/UserGuide/AccessPolicyLanguage_ElementDescriptions.
html


NEW QUESTION # 78
You are responsible for an application that leverages the Amazon SDK and Amazon EC2 roles for storing and retrieving data from Amazon S3, accessing multiple DynamoDB tables, and exchanging message with Amazon SQS queues. Your VP of Compliance is concerned that you are not following security best practices for securing all of this access. He has asked you to verify that the application's AWS access keys are not older than six months and to provide control evidence that these keys will be rotated a minimum of once every six months.
Which option will provide your VP with the requested information?

  • A. Updateyour application to log changes to its AWS access key credential file and use aperiodic Amazon EMR job to create a compliance report for your VP
  • B. Provideyour VP with a link to 1AM AWS documentation to address the VP's key rotationconcerns.
  • C. Createa new set of instructions for your configuration management tool that willperiodically create and rotate the application's existing access keys andprovide a compliance report to your VP.
  • D. Createa script to query the 1AM list-access keys API to get your application accesskey creation date and create a batch process to periodically create acompliance report for your VP.

Answer: B

Explanation:
Explanation
The question is focusing on 1AM roles rather than using access keys for accessing the services, AWS will take care of the temporary credentials provided through the roles in accessing these services.


NEW QUESTION # 79
......

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