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The DVA-C02 Certification Exam consists of 65 multiple-choice and multiple-response questions that are to be completed in 130 minutes. DVA-C02 exam covers a range of topics, including AWS core services, database technologies, security and compliance, and deployment and monitoring. Candidates who pass the DVA-C02 exam demonstrate their ability to develop, deploy, and maintain applications using AWS services in a cost-effective, scalable, and reliable manner. AWS Certified Developer - Associate certification is suitable for developers, DevOps engineers, and solutions architects who want to advance their careers in cloud computing and demonstrate their expertise in AWS. Amazon AWS Certified Developer - Associate Sample Questions (Q242-Q247):NEW QUESTION # 242
A company is building an application to accept data from customers. The data must be encrypted at rest and in transit.
The application uses an Amazon API Gateway API that resolves to AWS Lambda functions. The Lambda functions store the data in an Amazon Aurora MySQL DB cluster. The application worked properly during testing.
A developer configured an Amazon CloudFront distribution with field-level encryption that uses an AWS Key Management Service (AWS KMS) key. After the configuration of the distribution, the application behaved unexpectedly. All the data in the database changed from plaintext to ciphertext.
The developer must ensure that the data is not stored in the database as the ciphertext from the CloudFront field-level encryption.
Which solution will meet this requirement?
A. Change the CloudFront Viewer protocol policy from "HTTP and HTTPS" to "HTTPS only."
B. Request and deploy a new SSL certificate to use with the CloudFront distribution.
C. Enable encryption on the DB cluster by using the same KMS key that is used in CloudFront.
D. Add a Lambda function that uses the KMS key to decrypt the data fields before saving the data to the database.
Answer: D
NEW QUESTION # 243
A developer is troubleshooting an application mat uses Amazon DynamoDB in the uswest-2 Region. The application is deployed to an Amazon EC2 instance. The application requires read-only permissions to a table that is named Cars The EC2 instance has an attached IAM role that contains the following IAM policy.
When the application tries to read from the Cars table, an Access Denied error occurs.
How can the developer resolve this error?
A. Modify the IAM policy to include the dynamodb * action
B. Modify the IAM policy resource to be "arn aws dynamo* us-west-2 account-id table/*"
C. Create a trust policy that specifies the EC2 service principal. Associate the role with the policy.
D. Create a trust relationship between the role and dynamodb Amazonas com.
NEW QUESTION # 244
An AWS Lambda function requires read access to an Amazon S3 bucket and requires read/write access to an Amazon DynamoDB table. The correct IAM policy already exists.
What is the MOST secure way to grant the Lambda function access to the S3 bucket and the DynamoDB table?
A. Attach the existing IAM policy to the Lambda function.
B. Create an IAM user with programmatic access. Attach the existing IAM policy to the user. Add the user access key ID and secret access key as environment variables in the Lambda function.
C. Create an IAM role for the Lambda function. Attach the existing IAM policy to the role. Attach the role to the Lambda function.
D. Add the AWS account root user access key ID and secret access key as encrypted environment variables in the Lambda function.
Answer: C
NEW QUESTION # 245
A developer is creating a microservices application that runs across multiple compute environments.
The application must securely access secrets that are stored in AWS Secrets Manager with minimal network latency. The developer wants a solution that reduces the number of direct calls to Secrets Manager and simplifies secrets management across environments. Which solution will meet these requirements with the LEAST operational overhead?
A. Install the Secrets Manager Agent in each compute environment. Configure the agent to cache secrets locally. Securely retrieve the secrets from Secrets Manager as needed.
B. Create a custom script that retrieves secrets directly from Secrets Manager and caches the secrets in a local database for each compute environment.
C. Implement lazy loading logic in the application to fetch secrets directly from Secrets Manager and to cache the secrets in Redis.
D. Store the secrets in an Amazon S3 bucket. Retrieve and load the secrets as environment variables during application startup for each compute environment.
Answer: A
Explanation:
The Secrets Manager Agent provides an out-of-the-box solution for securely caching secrets locally, reducing latency and operational overhead.
* Why Option B is Correct:
* Caching: The agent securely caches secrets locally, minimizing Secrets Manager API calls.
* Security: Secrets remain secure during retrieval and storage.
* Low Operational Overhead: Managed solution eliminates the need for custom logic.
* Why Not Other Options:
* Option A: Custom scripts introduce complexity and require ongoing maintenance.
* Option C: Using Redis requires managing an additional service, increasing overhead.
* Option D: Storing secrets in S3 lacks the fine-grained security controls of Secrets Manager.
NEW QUESTION # 246
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 the X-Ray console to add annotations for AWS services and user-defined services
B. Use the X-Ray daemon to add annotations for AWS services and user-defined services
C. Use Region annotation that X-Ray adds automatically for AWS services Add Region annotation for user-defined services
D. Use Region annotation that X-Ray adds automatically for user-defined services Configure X-Ray to add Region annotation for AWS services
Answer: C
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 # 247
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