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Amazon AWS Certified DevOps Engineer - Professional Sample Questions (Q112-Q117):

NEW QUESTION # 112
You are building a game high score table in DynamoDB. You will store each user's highest score for each
game, with many games, all of which have relatively similar usage levels and numbers of players. You
need to be able to look up the highest score for any game. What's the best DynamoDB key structure?

A. HighestScore as the hash / only key.
B. GameID as the range / only key.
C. GameID as the hash key, HighestScore as the range key.
D. GameID as the hash / only key.

Answer: C

Explanation:
Since access and storage for games is uniform, and you need to have ordering within each game for the
scores (to access the highest value), your hash (partition) key should be the GameID, and there should be
a range key for HighestScore.
Reference:
http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/GuidelinesForTables.html#Guideli
nesForTables.Partitions

NEW QUESTION # 113
You are creating a new API for video game scores. Reads are 100 times more common than writes, and the top
1% of scores are read 100 times more frequently than the rest of the scores. What's the best design for this system, using DynamoDB?

A. DynamoDB table with roughly equal read and write throughput, with CloudFront caching.
B. DynamoDB table with roughly equal read and write throughput, with ElastiCache caching.
C. DynamoDB table with 100x higher read than write throughput, with ElastiCache caching.
D. DynamoDB table with 100x higher read than write throughput, with CloudFront caching.

Answer: B

Explanation:
Explanation
Because the lOOx read ratio is mostly driven by a small subset, with caching, only a roughly equal number of reads to writes will miss the cache, since the supermajority will hit the top 1% scores. Knowing we need to set the values roughly equal when using caching, we select AWS OastiCache, because CloudFront cannot directly cache DynamoDB queries, and OastiCache is an excellent in-memory cache for database queries, rather than a distributed proxy cache for content delivery.
For more information on DynamoDB table gudelines please refer to the below link:
* http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/GuidelinesForTables.html

NEW QUESTION # 114
You were just hired as a DevOps Engineer for a startup. Your startup uses AWS for 100% of their
infrastructure. They currently have no automation at all for deployment, and they have had many failures
while trying to deploy to production.The company has told you deployment process risk mitigation is the most
important thing now, and you have a lot of budget for tools and AWS resources.
Their stack includes a 2-tier API with data stored in DynamoDB or S3, depending on type. The Compute layer
is EC2 in Auto Scaling Groups. They use Route53 for DNS pointing to an ELB. An ELB balances load across
the EC2 instances. The scaling group properly varies between 4 and 12 EC2 servers. Which of the following
approaches, given this company's stack and their priorities, best meets the company's needs?

A. Model the stack in 1 CloudFormation template, to ensure consistency and dependency graph resolution.
Write deployment and integration testingautomation following Rolling Deployment methodologies.
B. Model the stack in AWS Elastic Beanstalk as a single Application with multiple Environments. Use
Elastic Beanstalk's Rolling Deploy option to progressively roll out application code changes when
promoting across environments.
B- Model the stack in three CloudFormation templates: Data layer, compute layer, and networking layer.
Write stack deployment and integration testing automation following Blue-Green methodologies. *>/
C. Model the stack in AWS OpsWorks as a single Stack, with 1 compute layer and its associated ELB. Use
Chef and App Deployments to automate Rolling Deployment.

Answer: C

Explanation:
Explanation
Here you are using 2 of the best practices for deployment, one is Blue Green Deployments and the other is
using Nested Cloudformation stacks.
The AWS Documentation mentions the below on nested stacks
As your infrastructure grows, common patterns can emerge in which you declare the same components in each
of your templates. You can separate out these
common components and create dedicated templates for them. That way, you can mix and match different
templates but use nested stacks to create a single,
unified stack. Nested stacks are stacks that create other stacks. To create nested stacks, use the
AWS::CloudFormation::Stackresource in your template to reference
other templates.
For more information on Cloudformation best practises, please visit the link:
* http://docs.aws.amazon.com/AWSCIoudFormation/latest/UserGuide/best-practices.
html For more information on Blue Green Deployment, please visit the link:
* https://dOawsstatic.com/whitepapers/AWS_Blue_Green_Deployments.pdf

NEW QUESTION # 115
A DevOps Engineer is deploying a new web application. The company chooses AWS Elastic Beanstalk for deploying and managing the web application, and Amazon RDS MySQL to handle persistent data. The company requires that new deployments have minimal impact if they fail. The application resources must be at full capacity during deployment, and rolling back a deployment must also be possible.
Which deployment sequence will meet these requirements?

A. Deploy the application using Elastic Beanstalk, and connect to an external RDS MySQL instance using Elastic Beanstalk environment properties. Use Elastic Beanstalk immutable updates for application deployments.
B. Deploy the application using Elastic Beanstalk and connect to an external RDS MySQL instance using Elastic Beanstalk environment properties. Use Elastic Beanstalk features for a blue/green deployment to deploy the new release to a separate environment, and then swap the CNAME in the two environments to redirect traffic to the new version.
C. Deploy the application using Elastic Beanstalk, and include RDS MySQL as part of the environment.
Use Elastic Beanstalk immutable updates for application deployments.
D. Deploy the application using Elastic Beanstalk, and include RDS MySQL as part of the environment.
Use default Elastic Beanstalk behavior to deploy changes to the application, and let rolling updates deploy changes to the application.

Answer: B

NEW QUESTION # 116
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 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.
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 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.

Answer: C

NEW QUESTION # 117
......

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100% Pass Quiz DOP-C01 - AWS Certified DevOps Engineer - Professional–Valid Valid Dumps

100% Pass Quiz 2025 Marvelous DOP-C01: Valid AWS Certified DevOps Engineer - Professional Dumps

Amazon AWS Certified DevOps Engineer - Professional Sample Questions (Q112-Q117):

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