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Amazon DOP-C01 (AWS Certified DevOps Engineer - Professional) Certification Exam is a highly sought-after certification in the field of DevOps engineering. It is designed for IT professionals who are experienced in DevOps practices and have a deep understanding of the AWS services and infrastructure. DOP-C01 Exam is intended to test the candidate's ability to design and manage AWS solutions, automate deployments, and implement continuous integration and delivery.

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Amazon AWS Certified DevOps Engineer - Professional Sample Questions (Q36-Q41):

NEW QUESTION # 36
You have an asynchronous processing application using an Auto Scaling Group and an SQS Queue. The Auto Scaling Group scales according to the depth of the job queue. The completion velocity of the jobs has gone down, the Auto Scaling Group size has maxed out, but the inbound job velocity did not increase.
What is a possible issue?

A. Someone changed the IAM Role Policy on the instances in the worker group and broke permissions to access the queue.
B. The scaling metric is not functioning correctly.
C. Some of the new jobs coming in are malformed and unprocessable.
D. The routing tables changed and none of the workers can process events anymore.

Answer: C

Explanation:
The IAM Role must be fine, as if it were broken, NO jobs would be processed since the system would never be able to get any queue messages. The same reasoning applies to the routing table change. The scaling metric is fine, as instance count increased when the queue depth increased due to more messages entering than exiting. Thus, the only reasonable option is that some of the recent messages must be malformed and unprocessable.
https://github.com/andrew-templeton/cloudacademy/blob/fca920b45234bbe99cc0e8efb9c65134884dd489/questions/null

NEW QUESTION # 37
You are a Devops Engineer for your company. The company has a number of Cloudformation templates in AWS. There is a concern from the IT Security department and they want to know who all use the Cloudformation stacks in the company's AWS account. Which of the following can be done to take care of this security concern?

A. EnableCloudwatch events for each cloudformation stack to track the resource creationevents.
B. EnableCloudwatch logs for each cloudformation stack to track the resource creationevents.
C. ConnectSQS and Cloudformation so that a message is published for each resource createdin the Cloudformation stack.
D. EnableCloudtrail logs so that the API calls can be recorded

Answer: D

Explanation:
Explanation
This is given as a best practice in the AWS documentation
AWS CloudTrail tracks anyone making AWS Cloud Formation API calls in your AWS account. API calls are logged whenever anyone uses the AWS Cloud Formation API, the AWS Cloud Formation console, a back-end console, or AWS CloudFormation AWS CLI commands.
Enable logging and specify an Amazon S3 bucket to store the
logs. That way, if you ever need to, you can audit who made what AWS CloudFormation call in your account For more information on the best practises, please visit the below URL:
* http://docs.aws.amazon.com/AWSCIoudFormation/latest/UserGuide/best-practices.html

NEW QUESTION # 38
A custom script needs to be passed to a new Amazon Linux instances created in your Auto Scalinggroup.
Which feature allows you to accomplish this?

A. AWSConfig
B. 1AM roles
C. User data
D. EC2Config service

Answer: C

Explanation:
Explanation
When you configure an instance during creation, you can add custom scripts to the User data section.
So in Step 3 of creating an instance, in the Advanced Details section, we can enter custom scripts in the User Data section. The below script installs Perl during the instance creation of the CC2 instance.
For more information on user data please refer to the URL:

* http://docs.aws.amazon.com/AWSCC2/latest/UserGuide/ec2-instance-metadata.htmI

NEW QUESTION # 39
A DevOps Engineer uses Docker container technology to build an image-analysis application.
The application often sees spikes in traffic. The Engineer must automatically scale the application in response to customer demand while maintaining cost effectiveness and minimizing any impact on availability. What will allow the FASTEST response to spikes in traffic while fulfilling the other requirements?

A. Create an Amazon ECS cluster with the container instances in an Auto Scaling group. Configure the ECS service to use Service Auto Scaling. Set up Amazon CloudWatch alarms to scale the ECS service and cluster.
B. Deploy containers on an AWS Elastic Beanstalk Multicontainer Docker environment. Configure Elastic Beanstalk to automatically scale the environment based on Amazon CloudWatch metrics.
C. Create an Amazon ECS cluster using Spot instances. Configure the ECS service to use Service Auto Scaling. Set up Amazon CloudWatch alarms to scale the ECS service and cluster.
D. Deploy containers on Amazon EC2 instances. Deploy a container scheduler to schedule containers onto EC2 instances. Configure EC2 Auto Scaling for EC2 instances based on available Amazon CloudWatch metrics.

Answer: D

NEW QUESTION # 40
You work at a company that makes use of AWS resources. One of the key security policies is to ensure that all data is encrypted both at rest and in transit. Which of the following is not a right implementation which aligns to this policy?

A. UsingS3 Server Side Encryption (SSE) to store the information
B. Enable SSLtermination on the ELB
C EnablingProxy Protocol
D- Enablingsticky sessions on your load balancer

Answer: B

Explanation:
Explanation
Please note the keyword "NOT" in the question.
Option A is incorrect. Enabling S3 SSE encryption helps the encryption of data at rest in S3.So Option A is invalid.
Option B is correct. If you disable SSL termination on the ELB the traffic will be encrypted all the way to the backend. SSL termination allows encrypted traffic between the client and the ELB but cause traffic to be unencrypted between the ELB and the backend (presumably EC2 or ECS/Task, etc.) If SSL is not terminated on the ELB you must use Layer A to have traffic encrypted all the way.
Sticky sessions are not supported with Layer A (TCP endpoint). Thus option D" Enabling sticky sessions on your load balancer" can't be used and is the right answer For more information on sticky sessions, please visit the below URL
https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/elb-sticky-sessions.html Requirements
* An HTTP/HTTPS load balancer.
* At least one healthy instance in each Availability Zone.
* At least one healthy instance in each Availability Zone.
If you don't want the load balancer to handle the SSL termination (known as SSL offloading), you can use TCP for both the front-end and back-end connections, and deploy certificates on the registered instances handling requests.
For more information on elb-listener-config, please visit the below
* https://docs.awsamazon.com/elasticloadbalancing/latest/classic/elb-listener-config.html If the front-end connection uses TCP or SSL, then your back-end connections can use either TCP or SSL.
Note: You can use an HTTPS listener and still use SSL on the backend but the ELB must terminate, decrypt and re-encrypt. This is slower and less secure then using the same encryption all the way to the backend.. It also breaks the question requirement of having all data encrypted in transit since it force the ELB to decrypt Proxy protocol is used to provide a secure transport connection hence Option C is also incorrect. For more information on SSL Listeners for your load balancer, please visit the below URL
* http://docsaws.amazon.com/elasticloadbalancing/latest/classic/elb-https-load-balancers.html
* https://aws.amazon.com/blogs/aws/elastic-load-balancer-support-for-ssl-termination/

NEW QUESTION # 41
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Amazon AWS Certified DevOps Engineer - Professional Sample Questions (Q36-Q41):

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