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Free PDF 2025 Perfect Amazon New DOP-C01 Exam Pdf

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The AWS-DevOps certification exam is intended for professionals with experience in DevOps, continuous integration, continuous delivery, and automation. DOP-C01 Exam Tests the candidate’s knowledge of AWS services such as Elastic Beanstalk, AWS CodePipeline, AWS CodeDeploy, AWS CloudFormation, and AWS OpsWorks. Candidates are required to have a thorough understanding of the AWS platform and how to leverage AWS services to automate the deployment of applications and infrastructure.

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DOP-C01 Test Questions: AWS Certified DevOps Engineer - Professional - DOP-C01 Training Online & DOP-C01 Original Questions

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Amazon AWS Certified DevOps Engineer - Professional Sample Questions (Q21-Q26):

NEW QUESTION # 21
A DevOps Engineer must track the health of a stateless RESTful service sitting behind a Classic Load Balancer. The deployment of new application revisions is through a Cl/CD pipeline. If the service's latency increases beyond a defined threshold, deployment should be stopped until the service has recovered. Which of the following methods allow for the QUICKEST detection time?

A. Use AWS Lambda and Elastic Load Balancing access logs to detect average latency. Alarm and stop deployment when latency increases beyond the defined threshold.
B. Use Amazon CloudWatch metrics provided by Elastic Load Balancing to calculate average latency.
Alarm and stop deployment when latency increases beyond the defined threshold.
C. Use AWS CodeDeploy's MinimumHealthyHosts setting to define thresholds for rolling back deployments. If these thresholds are breached, roll back the deployment.
D. Use Metric Filters to parse application logs in Amazon CloudWatch Logs. Create a filter for latency.
Alarm and stop deployment when latency increases beyond the defined threshold.

Answer: C

NEW QUESTION # 22
What method should I use to author automation if I want to wait for a CloudFormation stack to finish completing in a script?

A. Poll using <code>GetStackStatus</code> / <code>get-stack-status</code>.
B. Event subscription using SNS.
C. Event subscription using SQS.
D. Poll using <code>ListStacks</code> / <code>list-stacks</code>.

Answer: D

Explanation:
Event driven systems are good for IFTTT logic, but only polling will make a script wait to complete. ListStacks / list-stacks is a real method, GetStackStatus / get-stack-status is not.
http://docs.aws.amazon.com/cli/latest/reference/cloudformation/list-stacks.html

NEW QUESTION # 23
For AWS Auto Scaling, what is the first transition state a new instance enters after leaving steady state when scaling out due to increased load?

A. Pending
B. EnteringStandby
C. Detaching
D. Terminating:Wait

Answer: A

Explanation:
When a scale out event occurs, the Auto Scaling group launches the required number of EC2 instances, using its assigned launch configuration. These instances start in the Pending state.
If you add a lifecycle hook to your Auto Scaling group, you can perform a custom action here.
For more information, see Lifecycle Hooks.
http://docs.aws.amazon.com/AutoScaling/latest/DeveloperGuide/AutoScalingGroupLifecycle.html

NEW QUESTION # 24
You have an application consisting of a stateless web server tier running on Amazon EC2 instances behind load balancer, and are using Amazon RDS with read replicas.
Which of the following methods should you use to implement a self-healing and cost-effective architecture? Choose 2 answers.

A. Set up an Auto Scaling group for the web server tier along with an Auto Scaling policy that uses the Amazon EC2 CPU utilization CloudWatch metric to scale the instances.
B. Use an Amazon RDS Multi-AZ deployment.
C. Set up an Auto Scaling group for the database tier along with an Auto Scaling policy that uses the Amazon RDS read replica lag CloudWatch metric to scale out the Amazon RDS read replicas.
D. Set up a third-party monitoring solution on a cluster of Amazon EC2 instances in order to emit custom CloudWatch metrics to trigger the termination of unhealthy Amazon EC2 instances.
E. Use a larger Amazon EC2 instance type for the web server tier and a larger DB instance type for the data storage layer to ensure that they don't become unhealthy.
F. Set up an Auto Scaling group for the web server tier along with an Auto Scaling policy that uses the Amazon RDS DB CPU utilization CloudWatch metric to scale the instances.
G. Set up scripts on each Amazon EC2 instance to frequently send ICMP pings to the load balancer in order to determine which instance is unhealthy and replace it.

Answer: A,B

NEW QUESTION # 25
You need to scale an RDS deployment. You are operating at 10% writes and 90% reads, based on your
logging. How best can you scale this in a simple way?

A. Create read replicas for RDS since the load is mostly reads.
B. Create a Multi-AZ RDS installs and route read traffic to standby.
C. Cache all the database responses on the read side with CloudFront.
D. Create a second master RDS instance and peer the RDS groups.

Answer: A

Explanation:
The high-availability feature is not a scaling solution for read-only scenarios; you cannot use a standby
replica to serve read traffic. To service read-only traffic, you should use a Read Replica. For more
information, see Working with PostgreSQL, MySQL, and MariaDB Read Replicas.
Reference: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Concepts.MultiAZ.html

NEW QUESTION # 26
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