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DVA-C02 Valid Test Simulator - Valid DVA-C02 Exam Online

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Amazon DVA-C02 (AWS Certified Developer - Associate) certification is designed for individuals who want to demonstrate their expertise in developing and deploying cloud-based applications using Amazon Web Services (AWS). AWS Certified Developer - Associate certification is ideal for developers who work with AWS and want to validate their skills and knowledge of AWS services and development best practices. AWS Certified Developer - Associate certification exam covers a range of topics, including AWS core services, AWS architecture and design, security, and deployment and troubleshooting.

Amazon AWS Certified Developer - Associate Sample Questions (Q426-Q431):

NEW QUESTION # 426
An AWS Lambda function requires read access to an Amazon S3 bucket and requires read/write access to an Amazon DynamoDB table The correct 1AM policy already exists What is the MOST secure way to grant the Lambda function access to the S3 bucket and the DynamoDB table?

A. Create an 1AM user with programmatic access Attach the existing 1AM policy to the user. Add the user access key ID and secret access key as environment variables in the Lambda function.
B. Create an 1AM role for the Lambda function Attach the existing 1AM policy to the role Attach the role to the Lambda function
C. Add the AWS account root user access key ID and secret access key as encrypted environment variables in the Lambda function
D. Attach the existing 1AM policy to the Lambda function.

Answer: B

Explanation:
* Principle of Least Privilege: Granting specific permissions through an IAM role is more secure than directly attaching policies to a function or using root user credentials.
* IAM Roles for Lambda: Designed to provide temporary credentials to Lambda functions, enhancing security.
* Reusability: The existing IAM policy ensures the correct S3 and DynamoDB access is granted.

NEW QUESTION # 427
An online sales company is developing a serverless application that runs on AWS. The application uses an AWS Lambda function that calculates order success rates and stores the data in an Amazon DynamoDB table. A developer wants an efficient way to invoke the Lambda function every 15 minutes.
Which solution will meet this requirement with the LEAST development effort?

A. Create an AWS Systems Manager document that has a script that will invoke the Lambda function on Amazon EC2. Use a Systems Manager Run Command task to run the shell script every 15 minutes.
B. Create an Amazon EventBridge rule that has a rate expression that will run the rule every 15 minutes. Add the Lambda function as the target of the EventBridge rule.
C. Create an AWS Step Functions state machine. Configure the state machine to invoke the Lambda function execution role at a specified interval by using a Wait state. Set the interval to 15 minutes.
D. Provision a small Amazon EC2 instance. Set up a cron job that invokes the Lambda function every 15 minutes.

Answer: B

Explanation:
The best solution for this requirement is option
A) Creating an Amazon EventBridge rule that has a rate expression that will run the rule every 15 minutes and adding the Lambda function as the target of the EventBridge rule is the most efficient way to invoke the Lambda function periodically. This solution does not require any additional resources or development effort, and it leverages the built-in scheduling capabilities of EventBridge1.

NEW QUESTION # 428
A company has multiple Amazon VPC endpoints in the same VPC. A developer needs configure an Amazon S3 bucket policy so users can access an S3 bucket only by using these VPC endpoints.
Which solution will meet these requirements?

A. Create a single S3 bucket policy that has multiple aws sourceVpce value in the StingNotEquale condition. Repeat for all the VPC endpoint IDs.
B. Create a single S3 bucket policy that the multiple aws SourceVpce value and in the SringNotEquals condton to use vpce.
C. Create multiple S3 bucket polices by using each VPC endpoint ID that have the aws SourceVpce value in the StringNotEquals condition.
D. Create a single S3 bucket policy that has the aws SourceVpc value and in the StingNotEquals condition to use VPC ID.

Answer: A

Explanation:
This solution will meet the requirements by creating a single S3 bucket policy that denies access to the S3 bucket unless the request comes from one of the specified VPC endpoints. The aws:SourceVpce condition key is used to match the ID of the VPC endpoint that is used to access the S3 bucket. The StringNotEquals condition operator is used to negate the condition, so that only requests from the listed VPC endpoints are allowed. Option A is not optimal because it will create multiple S3 bucket policies, which is not possible as only one bucket policy can be attached to an S3 bucket. Option B is not optimal because it will use the aws:SourceVpc condition key, which matches the ID of the VPC that is used to access the S3 bucket, not the VPC endpoint. Option C is not optimal because it will use the StringNotEquals condition operator with a single value, which will deny access to the S3 bucket from all VPC endpoints except one.

NEW QUESTION # 429
A company has an application that runs across multiple AWS Regions. The application is experiencing performance issues at irregular intervals. A developer must use AWS X-Ray to implement distributed tracing for the application to troubleshoot the root cause of the performance issues.
What should the developer do to meet this requirement?

A. Use Region annotation that X-Ray adds automatically for user-defined services Configure X-Ray to add Region annotation for AWS services
B. Use Region annotation that X-Ray adds automatically for AWS services Add Region annotation for user-defined services
C. Use the X-Ray console to add annotations for AWS services and user-defined services
D. Use the X-Ray daemon to add annotations for AWS services and user-defined services

Answer: B

Explanation:
Distributed Tracing with X-Ray: X-Ray helps visualize request paths and identify bottlenecks in applications distributed across Regions.
Region Annotations (Automatic for AWS Services): X-Ray automatically adds a Region annotation to segments representing calls to AWS services. This aids in tracing cross-Region traffic.
Region Annotations (Manual for User-Defined): For segments representing calls to user-defined services in different Regions, the developer needs to add the Region annotation manually to enable comprehensive tracing.
Reference:
AWS X-Ray: https://aws.amazon.com/xray/

NEW QUESTION # 430
A company has an application that consists of different microservices that run inside an AWS account.
The microservices are running in containers inside a single VPC. The number of microservices is constantly increasing. A developer must create a central logging solution for application logs.

A. Create an AWS CloudTrail trail to log all the API calls.
B. Use AWS Cloud Map to map the interactions of the microservices.
C. Create a different Amazon CloudWatch Logs stream for each microservice.
D. Configure VPC Flow Logs to track the communications between the microservices.

Answer: C

NEW QUESTION # 431
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