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NEW QUESTION # 26
A company wants to migrate its web application to AWS and leverage auto scaling to handle peak workloads.
The solutions architect determined that the best metric for an auto scaling event is the number of concurrent users.
Based on this information, what should the developer use to auto scale based on concurrent users?
Answer: C
Explanation:
Concurrent users is an application-level metric, not a default infrastructure metric. CloudWatch provides standard metrics such as CPU utilization, network input, and request counts for many AWS services, but it will not automatically know how many active users the application currently has unless the application publishes that value. The correct design is to publish concurrent user count as a custom CloudWatch metric and use that metric in the scaling policy. SNS is a notification service, not a metric source. CloudFront can improve content delivery, but it does not directly define application auto scaling based on concurrent users.
NetworkIn might correlate with load but is not the metric chosen by the architect. CloudWatch supports custom metrics and alarms for threshold-based actions. ( AWS Documentation )
NEW QUESTION # 27
A development team maintains a web application by using a single AWS CloudFormation template. The template defines web servers and an Amazon RDS database. The team uses the Cloud Formation template to deploy the Cloud Formation stack to different environments. During a recent application deployment, a developer caused the primary development database to be dropped and recreated. The result of this incident was a loss of data. The team needs to avoid accidental database deletion in the future.
Which solutions will meet these requirements? (Choose two.)
Answer: A,D
Explanation:
https://aws.amazon.com/ru/premiumsupport/knowledge-center/cloudformation-accidental- updates/
NEW QUESTION # 28
A company is using Amazon OpenSearch Service to implement an audit monitoring system. A developer needs to create an AWS Cloudformation custom resource that is associated with an AWS Lambda function to configure the OpenSearch Service domain. The Lambda function must access the OpenSearch Service domain by using Open Search Service internal master user credentials.
What is the MOST secure way to pass these credentials to the Lambdas function?
Answer: A
Explanation:
The solution that will meet the requirements is to use CloudFormation to create an AWS Secrets Manager secret. Use a CloudFormation dynamic reference to retrieve the secret's value for the OpenSearch Service domain's MasterUserOptions. Create an IAM role that has the secretsmanager:GetSecretValue permission.
Assign the role to the Lambda function. Store the secret's name as the Lambda function's environment variable. Resolve the secret's value at runtime. This way, the developer can pass the credentials to the Lambda function in a secure way, as AWS Secrets Manager encrypts and manages the secrets. The developer can also use a dynamic reference to avoid exposing the secret's value in plain text in the CloudFormation template. The other options either involve passing the credentials as plain text parameters, which is not secure, or encrypting them with AWS KMS, which is less convenient than using AWS Secrets Manager.
Reference: Using dynamic references to specify template values
NEW QUESTION # 29
A development team wants to build a continuous integration/continuous delivery (CI/CD) pipeline. The team is using AWS CodePipeline to automate the code build and deployment. The team wants to store the program code to prepare for the CI/CD pipeline.
Which AWS service should the team use to store the program code?
Answer: D
Explanation:
Explanation
AWS CodeCommit is a service that provides fully managed source control for hosting secure and scalable private Git repositories. The development team can use CodeCommit to store the program code and prepare for the CI/CD pipeline. CodeCommit integrates with other AWS services such as CodePipeline, CodeBuild, and CodeDeploy to automate the code build and deployment process.
References:
[What Is AWS CodeCommit? - AWS CodeCommit]
[AWS CodePipeline - AWS CodeCommit]
NEW QUESTION # 30
A developer created an AWS Lambda function that performs a series of operations that involve multiple AWS services. The function's duration time is higher than normal. To determine the cause of the issue, the developer must investigate traffic between the services without changing the function code.
Which solution will meet these requirements?
Answer: B
NEW QUESTION # 31
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