EFFICIENT RELIABLE AWS-DEVOPS BRAINDUMPS SPEND YOUR LITTLE TIME AND ENERGY TO PASS AWS-DEVOPS EXAM ONCE

Efficient Reliable AWS-DevOps Braindumps Spend Your Little Time and Energy to Pass AWS-DevOps exam once

Efficient Reliable AWS-DevOps Braindumps Spend Your Little Time and Energy to Pass AWS-DevOps exam once

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Amazon DOP-C01 (AWS Certified DevOps Engineer - Professional) Certification Exam is a widely recognized certification that validates a candidate's proficiency in designing, deploying, and operating applications and infrastructure on the AWS platform. AWS Certified DevOps Engineer - Professional certification is ideal for professionals working in the field of DevOps, who are responsible for automating and streamlining the software delivery process.

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Amazon AWS Certified DevOps Engineer - Professional Sample Questions (Q194-Q199):

NEW QUESTION # 194
You need to deploy a new application version to production. Because the deployment is high-risk, you need to roll the new version out to users over a number of hours, to make sure everything is working correctly. You need to be able to control the proportion of users seeing the new version of the application down to the percentage point.
You use ELB and EC2 with Auto Scaling Groups and custom AMIs with your code pre-installed assigned to Launch Configurations. There are no database-level changes during your deployment. You have been told you cannot spend too much money, so you must not increase the number of EC2 instances much at all during the deployment, but you also need to be able to switch back to the original version of code quickly if something goes wrong. What is the best way to meet these requirements?

  • A. Create a second ELB, Auto Scaling Launch Configuration, and Auto Scaling Group using the Launch Configuration. Create AMIs with all code pre-installed. Assign the new AMI to the second Auto Scaling Launch Configuration. Use Route53 Weighted Round Robin Records to adjust the proportion of traffic hitting the two ELBs.
  • B. Use the Blue-Green deployment method to enable the fastest possible rollback if needed. Create a full second stack of instances and cut the DNS over to the new stack of instances, and change the DNS back if a rollback is needed.
  • C. Create AMIs with all code pre-installed. Assign the new AMI to the Auto Scaling Launch Configuration, to replace the old one. Gradually terminate instances running the old code (launched with the old Launch Configuration) and allow the new AMIs to boot to adjust the traffic balance to the new code. On rollback, reverse the process by doing the same thing, but changing the AMI on the Launch Config back to the original code.
  • D. Migrate to use AWS Elastic Beanstalk. Use the established and well-tested Rolling Deployment setting AWS provides on the new Application Environment, publishing a zip bundle of the new code and adjusting the wait period to spread the deployment over time. Re-deploy the old code bundle to rollback if needed.

Answer: A

Explanation:
Only Weighted Round Robin DNS Records and reverse proxies allow such fine-grained tuning of traffic splits. The Blue-Green option does not meet the requirement that we mitigate costs and keep overall EC2 fleet size consistent, so we must select the 2 ELB and ASG option with WRR DNS tuning. This method is called A/B deployment and/or Canary deployment.
https://d0.awsstatic.com/whitepapers/overview-of-deployment-options-on-aws.pdf


NEW QUESTION # 195
You are a Devops engineer for your company. The company hosts a web application that is hosted on a single EC2 Instance. The end users are complaining of slow response times for the application. Which of the following can be used to effectively scale the application?

  • A. UseAutoscaling Groups to launch multiple instances and place them behind an ELB.
  • B. UseCloudformation to deploy the app again with an Amazon RDS with the Multi-AZfeature.
  • C. UseAutoscaling launch configurations to launch multiple instances and place thembehing an ELB.
  • D. UseAmazonRDS with the Multi-AZ feature.

Answer: A

Explanation:
Explanation
The AWS Documentation mentions the below
When you use Auto Scaling, you can automatically increase the size of your Auto Scalinggroup when demand goes up and decrease it when demand goes down. As Auto Scaling adds and removes CC2 instances, you must ensure that the traffic for your application is distributed across all of your CC2 instances. The Clastic Load Balancing service automatically routes incoming web traffic across such a dynamically changing number of L~C2 instances. Your load balancer acts as a single point of contact for all incoming traffic to the instances in your Auto Scalinggroup.
For more information on Autoscaling and ELB, please refer to the below link:
* http://docs.aws.a
mazon.com/autoscaling/latest/userguide/autosca I ing-load-balancer.html


NEW QUESTION # 196
A DevOps engineer has been tasked with ensuring that all Amazon S3 buckets, except for those with the word "public" in the name, allow access only to authorized users utilizing S3 bucket policies. The security team wants to be notified when a bucket is created without the proper policy and for the policy to be automatically updated.
Which solutions will meet these requirements?

  • A. Create a custom AWS Config rule that will trigger an AWS Lambda function when an S3 bucket is created or updated. Use the Lambda function to look for S3 buckets that should be private, but that do not have a bucket policy that enforces privacy. When such a bucket is found, invoke a remediation action and use Amazon SNS to notify the security team.
  • B. Create an Amazon EventBridge (Amazon CloudWatch Events) rule that triggers when a new object is created in a bucket that does not have the word "public" in the name. Target and use an AWS Lambda function to update the PublicAccessBlock configuration. Create an additional notification with the same filter and use Amazon SNS to send an email to the security team.
  • C. Create an Amazon S3 event notification that triggers when an S3 bucket is created that does not have the word "public" in the name. Define an AWS Lambda function as a target for this notification and use the function to apply a new default policy to the S3 bucket. Create an additional notification with the same filter and use Amazon SNS to send an email to the security team.
  • D. Create an Amazon EventBridge (Amazon CloudWatch Events) rule that triggers when an S3 bucket is created. Use an AWS Lambda function to determine whether the bucket should be private. If the bucket should be private, update the PublicAccessBlock configuration. Configure a second EventBridge (CloudWatch Events) rule to notify the security team using Amazon SNS when PutBucketPolicy is called.

Answer: C


NEW QUESTION # 197
You have a requirement to automate the creation of EBS Snapshots. Which of the following can be used to achieve this in the best way possible.

  • A. Use the AWSConfig service to create a snapshot of the AWS Volumes
  • B. Use the AWS CodeDeploy service to create a snapshot of the AWS Volumes
  • C. Use Cloudwatch Events to trigger the snapshots of EBS Volumes
  • D. Create a powershell script which uses the AWS CLI to get the volumes and then run the script as a cron job.

Answer: C

Explanation:
Explanation
The best is to use the inbuilt service from Cloudwatch, as Cloud watch Events to automate the creation of CBS Snapshots. With Option A, you would be restricted to running the powrshell script on Windows machines and maintaining the script itself And then you have the overhead of having a separate instance just to run that script.
When you go to Cloudwatch events, you can use the Target as EC2 CreateSnapshot API call as shown below.
Create rules to invoke Targets based on Events happening in your AWS environment.

The AWS Documentation mentions
Amazon Cloud Watch Cvents delivers a near real-time stream of system events that describe changes in Amazon Web Services (AWS) resources. Using simple rules that you can quickly set up, you can match events and route them to one or more target functions or streams.
Cloud Watch Cvents becomes aware of operational
changes as they occur. Cloud Watch Cvents responds to these operational changes and takes corrective action as necessary, by sending messages to respond to the environment, activating functions, making changes, and capturing state information.
For more information on Cloud watch Cvents, please visit the below U RL:
* http://docs.aws.amazon.com/AmazonCloudWatch/latest/events/WhatlsCloudWatchCvents.html


NEW QUESTION # 198
Your company has multiple applications running on AWS. Your company wants to develop a tool that notifies
on-call teams immediately via email when an alarm is triggered in your environment. You have multiple
on-call teams that work different shifts, and the tool should handle notifying the correct teams at the correct
times. How should you implement this solution?

  • A. Create an Amazon SNS topic and configure your on-call team email addresses as subscribers. Use the
    AWS SDK tools to integrate your application with Amazon SNS and send messages to this new topic.
    Notifications will be sent to on-call users when a CloudWatch alarm is triggered.
  • B. Create an Amazon SNS topic and configure your on-call team email addresses as subscribers. Create a
    secondary Amazon SNS topic for alarms and configure your CloudWatch alarms to notify this topic
    when triggered. Create an HTTP subscriber to this topic that notifies your application via HTTP POST
    when an alarm is triggered. Use the AWS SDK tools to integrate your application with Amazon SNS
    and send messages to the first topic so that on-call engineers receive alerts.
  • C. Create an Amazon SNS topic for each on-call group, and configure each of these with the team member
    emails as subscribers. Create another Amazon SNS topic and configure your CloudWatch alarms to
    notify this topic when triggered. Create an HTTP subscriber to this topic that notifies your application
    via HTTP POST when an alarm is triggered. Use the AWS SDK tools to integrate your application with
    Amazon SNS and send messages to the correct team topic when on shift.
  • D. Create an Amazon SNS topic and an Amazon SQS queue. Configure the Amazon SQS queue as a
    subscriber to the Amazon SNS topic.
    Configure CloudWatch alarms to notify this topic when an alarm is triggered. Create an Amazon EC2
    Auto Scaling group with both minimum and desired Instances configured to 0. Worker nodes in this
    group spawn when messages are added to the queue. Workers then use Amazon Simple Email Service to
    send messages to your on call teams.

Answer: C

Explanation:
Explanation
Option D fulfils all the requirements
1) First is to create a SNS topic for each group so that the required members get the email addresses.
2) Ensure the application uses the HTTPS endpoint and the SDK to publish messages Option A is invalid
because the SQS service is not required.
Option B and C are incorrect. As per the requirement we need to provide notification to only those on-call
teams who are working in that particular shift when an alarm is triggered. It need not have to be send to all the
on-call teams of the company. With Option B & C, since we are not configuring the SNS topic for each on call
team the notifications will be send to all the on-call teams. Hence these 2 options are invalid. For more
information on setting up notifications, please refer to the below document link: from AWS
* http://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/US_SetupSNS.html


NEW QUESTION # 199
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