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Obtaining the Amazon DVA-C02 Certification can be a valuable asset for software developers, as it demonstrates their expertise in cloud computing and AWS services. Certified developers are in high demand in the job market, and this certification can help individuals stand out from other candidates when applying for job roles that involve developing applications on AWS. Additionally, AWS certified developers have access to exclusive resources and networking opportunities, which can help them stay up-to-date with the latest trends and advancements in cloud computing.

The Amazon DVA-C02 Exam covers a wide range of topics, including AWS core services such as EC2, S3, and RDS, as well as developer-focused services like AWS Lambda, API Gateway, and DynamoDB. Candidates are tested on their ability to design, develop, and deploy cloud-based applications using AWS services. They are also expected to have a good understanding of AWS security, best practices, and cost optimization.

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Amazon DVA-C02 (AWS Certified Developer - Associate) certification exam is designed to validate the skills and knowledge of individuals who have experience in developing and maintaining applications on the AWS platform. AWS Certified Developer - Associate certification is ideal for developers who want to demonstrate their ability to design, deploy, and maintain scalable and reliable applications on AWS. DVA-C02 Exam covers a range of topics, including AWS core services, application development, and security best practices.

Amazon AWS Certified Developer - Associate Sample Questions (Q330-Q335):

NEW QUESTION # 330
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 daemon to add annotations for AWS services and user-defined services.
B. Use the X-Ray console 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

NEW QUESTION # 331
A developer is using AWS CloudFormation to deploy an AWS Lambda function. The developer needs to set the Lambda function's timeout value based on the environment parameter of the template. The template contains mappings of EnvironmentData for each environment's timeout value. The environment parameter and EnvironmentData mappings are as follows:
Environment parameter:

EnvironmentData mappings:

Which statement will meet these requirements?

A. Timeout: !ForEach[EnvironmentData, !Ref Environment, Timeout]
B. Timeout: !Select [EnvironmentData, !Ref Environment, Timeout]
C. Timeout: !GetAtt [EnvironmentData, !Ref Environment, Timeout]
D. Timeout: !FindInMap [EnvironmentData, !Ref Environment, Timeout]

Answer: D

NEW QUESTION # 332
An application that is hosted on an Amazon EC2 instance needs access to files that are stored in an Amazon S3 bucket. The application lists the objects that are stored in the S3 bucket and displays a table to the user.
During testing, a developer discovers that the application does not show any objects in the list.
What is the MOST secure way to resolve this issue?

A. Update the IAM instance profile that is attached to the EC2 instance to include the S3:ListBucket permission for the S3 bucket.
B. Update the S3 bucket policy by including the S3:ListBucket permission and by setting the Principal element to specify the account number of the EC2 instance.
C. Update the IAM instance profile that is attached to the EC2 instance to include the S3:* permission for the S3 bucket.
D. Update the developer's user permissions to include the S3:ListBucket permission for the S3 bucket.

Answer: A

Explanation:
IAM instance profiles are containers for IAM roles that can be associated with EC2 instances. An IAM role is a set of permissions that grant access to AWS resources. An IAM role can be used to allow an EC2 instance to access an S3 bucket by including the appropriate permissions in the role's policy. The S3:ListBucket permission allows listing the objects in an S3 bucket. By updating the IAM instance profile with this permission, the application on the EC2 instance can retrieve the objects from the S3 bucket and display them to the user. Reference: Using an IAM role to grant permissions to applications running on Amazon EC2 instances

NEW QUESTION # 333
A company runs an application on AWS. The application stores data in an Amazon DynamoDB table. Some queries are taking a long time to run. These slow queries involve an attribute that is not the table's partition key or sort key.
The amount of data that the application stores in the DynamoDB table is expected to increase significantly. A developer must increase the performance of the queries.
Which solution will meet these requirements?

A. Increase the page size for each request by setting the Limit parameter to be higher than the default value. Configure the application to retry any request that exceeds the provisioned throughput.
B. Perform a parallel scan operation by issuing individual scan requests. In the parameters, specify the segment for the scan requests and the total number of segments for the parallel scan.
C. Create a global secondary index (GSI). Set query attribute to be the partition key of the index.
D. Turn on read capacity auto scaling for the DynamoDB table. Increase the maximum read capacity units (RCUs).

Answer: C

NEW QUESTION # 334
An Amazon Simple Queue Service (Amazon SQS) queue serves as an event source for an AWS Lambda function In the SQS queue, each item corresponds to a video file that the Lambda function must convert to a smaller resolution The Lambda function is timing out on longer video files, but the Lambda function's timeout is already configured to its maximum value What should a developer do to avoid the timeouts without additional code changes'?

A. Increase the visibility timeout on the SQS queue
B. Use multi-threading for the conversion.
C. Increase the instance size of the host that runs the Lambda function.
D. Increase the memory configuration of the Lambda function

Answer: D

Explanation:
Explanation
Increasing the memory configuration of the Lambda function will also increase the CPU and network throughput available to the function. This can improve the performance of the video conversion process and reduce the execution time of the function. This solution does not require any code changes or additional resources. It is also recommended to follow the best practices for preventing Lambda function timeouts1. References
* Troubleshoot Lambda function invocation timeout errors | AWS re:Post

NEW QUESTION # 335
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