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최신 AWS Certified Associate DVA-C02 무료샘플문제 (Q736-Q741):

질문 # 736
A company is building a microservices application that consists of many AWS Lambda functions.
The development team wants to use AWS Serverless Application Model (AWS SAM) templates to automatically test the Lambda functions. The development team plans to test a small percentage of traffic that is directed to new updates before the team commits to a full deployment of the application.
Which combination of steps will meet these requirements in the MOST operationally efficient way? (Choose two.)

A. Set the deployment preference type to Linear10PercentEvery10Minutes. Use hooks to test the deployment.
B. Enable gradual deployments through AWS SAM templates.
C. Declare the EventInvokeConfig on the Lambda functions in the AWS SAM templates with OnSuccess and OnFailure configurations.
D. Set the deployment preference type to Canary10Percent30Minutes. Use hooks to test the deployment.
E. Use AWS SAM CLI commands in AWS CodeDeploy to invoke the Lambda functions to test the deployment.

정답：B,D

질문 # 737
A developer works on a public website. The developer wants to add monitoring to the website by using Amazon CloudWatch RUM. The developer needs to configure authentication that allows public access to send events to CloudWatch RUM. Which solutions will meet these requirements? (Choose two.)

A. Create a resource-based policy for the CloudWatch RUM app monitor that allows unauthenticated access to send events to CloudWatch RUM.
B. Create an identity-based policy that has permissions to send events to CloudWatch RUM. Attach the policy to the CloudWatch RUM app monitor.
C. Create an AWS IAM role that has permissions to send events to CloudWatch RUM. Configure the website to assume the IAM role before sending events.
D. Create a resource control policy (RCP) that allows unauthenticated access to send events to CloudWatch RUM.
E. Create an AWS IAM role that has permissions to send events to CloudWatch RUM. Create an Amazon Cognito identity pool that uses the IAM role for unauthenticated access. Configure CloudWatch RUM to use the identity pool.

정답：A,E

설명：
CloudWatch RUM supports public event ingestion in two built-in ways. You can attach a resource-based policy to the app monitor to allow unauthenticated clients to send events, or you can configure an Amazon Cognito identity pool that provides an unauthenticated IAM role for the website to use when sending data to RUM. AWS documentation for creating app monitors explicitly states that if you attach a resource-based policy, you do not need to sign requests with AWS credentials, and otherwise you can use a Cognito identity pool with an unauthenticated identity.

질문 # 738
A developer runs an application that displays scores for sports games on Amazon EC2 instances. The application uses a Redis client to retrieve the scores from an Amazon ElastiCache (Redis OSS) cluster.
The developer observes increased latency during operations on the cache because of connection failures to the cluster. The developer needs to resolve the latency issues.

A. Deploy more nodes in the ElastiCache cluster. Update the Redis client to discover the new nodes.
B. Configure the Redis client to use an exponential backoff retry strategy to establish cache connections.
C. Store the scores in the application's memory. Perform bulk set operations on the scores that are stored in memory.
D. Configure the Redis client in the application to persist connections to the cluster by implementing a connection pool.

정답：D

설명：
* Why Option C is Correct:Implementing a connection pool in the Redis client reduces connection overhead and avoids frequent connection establishment, which helps to reduce latency and connection failures.
* Why Other Options are Incorrect:
* Option A: Exponential backoff retry strategies help with transient failures but do not resolve latency caused by frequent connection establishment.
* Option B: Storing scores in application memory adds complexity and risks inconsistency.
* Option D: Adding more nodes is unnecessary unless the cluster is under heavy load. Latency due to connection failures is better addressed at the application level.
* AWS Documentation References:
* Amazon ElastiCache Best Practices

질문 # 739
A company needs to harden its container images before the images are in a running state. The company's application uses Amazon Elastic Container Registry (Amazon ECR) as an image registry. Amazon Elastic Kubernetes Service (Amazon EKS) for compute, and an AWS CodePipeline pipeline that orchestrates a continuous integration and continuous delivery (CI/CD) workflow.
Dynamic application security testing occurs in the final stage of the pipeline after a new image is deployed to a development namespace in the EKS cluster. A developer needs to place an analysis stage before this deployment to analyze the container image earlier in the CI/CD pipeline.
Which solution will meet these requirements with the MOST operational efficiency?

A. Add an action to the deployment stage of the pipeline so that the action occurs before the deployment to the EKS cluster. Configure ECR basic image scanning to scan on image push. Use an AWS Lambda function as the action provider. Configure the Lambda function to check the scan results and to fail the pipeline if there are findings.
B. Build the container image and run the docker scan command locally. Mitigate any findings before pushing changes to the source code repository. Write a pre-commit hook that enforces the use of this workflow before commit.
C. Create a new CodePipeline stage that occurs after source code has been retrieved from its repository. Run a security scanner on the latest revision of the source code. Fail the pipeline if there are findings.
D. Create a new CodePipeline stage that occurs after the container image is built. Configure ECR basic image scanning to scan on image push. Use an AWS Lambda function as the action provider. Configure the Lambda function to check the scan results and to fail the pipeline if there are findings.

정답：D

설명：
The solution that will meet the requirements with the most operational efficiency is to create a new CodePipeline stage that occurs after the container image is built. Configure ECR basic image scanning to scan on image push. Use an AWS Lambda function as the action provider. Configure the Lambda function to check the scan results and to fail the pipeline if there are findings. This way, the container image is analyzed earlier in the CI/CD pipeline and any vulnerabilities are detected and reported before deploying to the EKS cluster. The other options either delay the analysis until after deployment, which increases the risk of exposing insecure images, or perform analysis on the source code instead of the container image, which may not capture all the dependencies and configurations that affect the security posture of the image.

질문 # 740
A developer needs to deploy an application running on AWS Fargate using Amazon ECS The application has environment variables that must be passed to a container for the application to initialize.
How should the environment variables be passed to the container?

A. Define an array that includes the environment variables under the environment parameter within the task definition.
B. Define an array that includes the environment variables under the environment parameter within the service definition.
C. Define an array that includes the environment variables under the entryPoint parameter within the service definition.
D. Define an array that includes the environment variables under the entryPoint parameter within the task definition.

정답：A

설명：
This solution allows the environment variables to be passed to the container when it is launched by AWS Fargate using Amazon ECS. The task definition is a text file that describes one or more containers that form an application. It contains various parameters for configuring the containers, such as CPU and memory requirements, network mode, and environment variables. The environment parameter is an array of key-value pairs that specify environment variables to pass to a container. Defining an array that includes the environment variables under the entryPoint parameter within the task definition will not pass them to the container, but use them as command-line arguments for overriding the default entry point of a container.
Defining an array that includes the environment variables under the environment or entryPoint parameter within the service definition will not pass them to the container, but cause an error because these parameters are not valid for a service definition.
Reference: [Task Definition Parameters], [Environment Variables]

질문 # 741
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