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Incident and Event Response (18%)
- Defining how to automate event management & alerting;
- Applying the concepts required for implementing automated healing and setting up the event-driven automated actions;
- Troubleshooting the issues and defining how to restore the operations.
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What Test Can Get You This Professional-Level Certificate?
This certification requires examinees to get the passing score in the AWS DOP-C01 exam. The vendor doesn't have any prerequisites that make the candidates eligible for this test. However, it recommends that the examinees should have prior experience if they want to pass such an exam without stress. For example, they would better have at least 2 years of hands-on experience in managing and operating AWS environments. Another recommendation would be that candidates have prior experience in developing code concepts for at least one high-level programming language. Candidates will also increase their chances to pass DOP-C01 test if they have experience in building automated infrastructures. Amazon also recommends that examinees should have knowledge of administering operating systems. Finally, the vendor mentions in the exam blueprint that the candidates should have a deep understanding of modern operations and development processes.
The AWS Certified DevOps Engineer – Professional or DOP-C01 exam focuses on DevOps engineers, developers, or any other specialist who is familiar with working with AWS software architecture.
Amazon AWS Certified DevOps Engineer - Professional Sample Questions (Q71-Q76):
NEW QUESTION # 71
Which of the following is a container for metrics in Cloudwatch?
- A. MetricCollection
- B. Namespaces
- C. Locale
- D. Packages
Answer: B
Explanation:
Explanation
The AWS Documentation mentions the following
Cloud Watch namespaces are containers for metrics. Metrics in different namespaces are isolated from each other, so that metrics from different applications are not mistakenly aggregated into the same statistics. All AWS services that provide Amazon Cloud Watch data use a namespace string, beginning with "AWS/". When you create custom metrics, you must also specify a namespace as a container for custom metrics. The following services push metric data points to Cloud Watch.
For more information on Cloudwatch namespaces, please visit the below URL:
* ttp://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/aws-namespaces.html
NEW QUESTION # 72
A web application has been deployed using an AWS Elastic Beanstalk application The Application Developers are concerned that they are seeing high latency in two different areas of the application: HTTP client requests to a third-party API MySQL client library queries to an Amazon RDS database A DevOps Engineer must gather trace data to diagnose the issues. Which steps will gather the trace information with the LEAST amount of changes and performance impacts to the application?
- A. Add additional logging to the application code. Use the Amazon CloudWatch agent to stream the application logs into Amazon Elasticsearch Service. Query the log data in Amazon ES.
- B. On the AWS Elastic Beanstalk management page for the application, enable the AWS X-Ray daemon. View the trace data in the X-Ray console.
- C. Instrument the application to use the AWS X-Ray SDK. Post trace data to an Amazon Elasticsearch Service cluster. Query the trace data for calls to the HTTP client and the MySQL client.
- D. Instrument the application using the AWS X-Ray SDK. On the AWS Elastic Beanstalk management page for the application, enable the X-Ray daemon. View the trace data in the X-Ray console.
Answer: B
NEW QUESTION # 73
A Developer is maintaining a fleet of 50 Amazon EC2 Linux servers. The servers are part of an Amazon EC2 Auto Scaling group, and also use Elastic Load Balancing for load balancing.
Occasionally, some application servers are being terminated after failing ELB HTTP health checks. The Developer would like to perform a root cause analysis on the issue, but before being able to access application logs, the server is terminated.
How can log collection be automated?
- A. Use Auto Scaling lifecycle hooks to put instances in a Pending:Wait state. Create an Amazon CloudWatch Alarm for EC2 Instance Terminate and trigger an AWS Lambda function that executes an SSM Run Command script to collect logs, push them to Amazon S3, and complete the Successful lifecycle action once logs are collected.
- B. Use Auto Scaling lifecycle hooks to put instances in a Terminating:Wait state. Create an Amazon CloudWatch Events rule for EC2 Instance- and trigger an AWS Lambda function that executes a SSM Run Command script to collect logs, push them to Amazon S3, terminate Lifecycle Action and complete the lifecycle action once logs are collected.
- C. Use Auto Scaling lifecycle hooks to put instances in a Terminating:Wait state. Create a Config rule for EC2 Instance-terminate Lifecycle and trigger a step function that executes a script to collect logs, push them to Amazon S3, and complete the lifecycle action once logs are collected. Action
- D. Use Auto Scaling lifecycle hooks to put instances in a Terminating:Wait state. Create an Amazon CloudWatch subscription filter for EC2 Instance and trigger a CloudWatch agent that executes a script to called logs, push them to Amazon S3, and complete the lifecycle action Terminate Successful once logs are collected.
Answer: B
NEW QUESTION # 74
Your application uses Cloud Formation to orchestrate your application's resources. During your testing phase before the application went live, your Amazon RDS instance type was changed and caused the instance to be re-created, resulting In the loss of test data. How should you prevent this from occurring in the future?
- A. Within the AWS CloudFormation parameter with which users can select the Amazon RDS instance type, set AllowedValues to only contain the current instance type.
- B. Update the stack using ChangeSets
- C. In the AWS CloudFormation template, set the AWS::RDS::DBInstance's DBInstanceClass property to be read-only.
- D. Subscribe to the AWS CloudFormation notification "BeforeResourcellpdate," and call CancelStackUpdate if the resource identified is the Amazon RDS instance.
- E. Use an AWS CloudFormation stack policy to deny updates to the instance. Only allow UpdateStack permission to 1AM principals that are denied SetStackPolicy.
Answer: B
Explanation:
Explanation
When you need to update a stack, understanding how your changes will affect running resources before you implement them can help you update stacks with confidence. Change sets allow you to preview how proposed changes to a stack might impact your running resources, for example, whether your changes will delete or replace any critical resources, AWS CloudFormation makes the changes to your stack only when you decide to execute the change set, allowing you to decide whether to proceed with your proposed changes or explore other changes by creating another change set For example, you can use a change set to verify that AWS CloudFormation won't replace your stack's database instances during an update.
NEW QUESTION # 75
You are a Devops Engineer for your company. There is a requirement to log each time an Instance is scaled in or scaled out from an existing Autoscaling Group. Which of the following steps can be implemented to fulfil this requirement. Each step forms part of the solution.
- A. Createa Cloudwatch event which will trigger the SQS queue.
- B. Createa Cloudwatch event which will trigger the Lambda function.
- C. Createa Lambda function which will write the event to Cloudwatch logs
- D. Createan SQS queue which will write the event to Cloudwatch logs
Answer: B,C
Explanation:
Explanation
The AWS documentation mentions the following
You can run an AWS Lambda function that logs an event whenever an Auto Scaling group launches or terminates an Amazon CC2 instance and whether the launch or terminate event was successful.
For more information on configuring lambda with Cloudwatch events for this scenario, please visit the URL:
http://docs.aws.a
mazon.com/AmazonCloudWatch/latest/events/LogASGro upState.html
NEW QUESTION # 76
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