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The DVA-C02 Exam is an associate-level certification, which means that candidates should have a good understanding of AWS services and be able to demonstrate their knowledge of AWS best practices. DVA-C02 exam covers a wide range of topics, including AWS core services, security, and deployment. It also covers topics such as how to design and develop scalable AWS applications, how to troubleshoot issues, and how to optimize application performance.
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Amazon DVA-C02 (AWS Certified Developer - Associate) exam is a certification program that is designed to test the skills and knowledge of developers who are interested in building and maintaining applications using the Amazon Web Services (AWS) platform. DVA-C02 Exam is intended for individuals who possess a strong understanding of AWS services and have hands-on experience developing and deploying applications on AWS.
NEW QUESTION # 383
A company created an application to consume and process data. The application uses Amazon SQS and AWS Lambda functions. The application is currently working as expected, but it occasionally receives several messages that it cannot process properly. The company needs to clear these messages to prevent the queue from becoming blocked. A developer must implement a solution that makesqueue processing always operational. The solution must give the company the ability to defer the messages with errors and save these messages for further analysis. What is the MOST operationally efficient solution that meets these requirements?
Answer: C
Explanation:
Using a dead-letter queue (DLQ) with Amazon SQS is the most operationally efficient solution for handling unprocessable messages.
* Amazon SQS Dead-Letter Queue:
* A DLQ is used to capture messages that fail processing after a specified number of attempts.
* Allows the application to continue processing other messages without being blocked.
* Messages in the DLQ can be analyzed later for debugging and resolution.
* Why DLQ is the Best Option:
* Operational Efficiency: Automatically defers messages with errors, ensuring the queue is not blocked.
* Analysis Ready: Messages in the DLQ can be inspected to identify recurring issues.
* Scalable: Works seamlessly with Lambda and SQS at scale.
* Why Not Other Options:
* Option A: Logs the messages but does not resolve the queue blockage issue.
* Option C: FIFO queues and 0-second retention do not provide error handling or analysis capabilities.
* Option D: Alerts administrators but does not handle or store the unprocessable messages.
Steps to Implement:
* Create a new SQS queue to serve as the DLQ.
* Attach the DLQ to the primary queue and configure the Maximum Receives setting.
NEW QUESTION # 384
A company has an AWS Step Functions state machine named myStateMachine.
The company configured a service role for Step Functions. The developer must ensure that only the myStateMachine state machine can assume the service role.
Answer: A
Explanation:
Comprehensive Detailed Step by Step Explanation with All AWS Developer Reference:
To ensure that only a specific AWS Step Functions state machine (myStateMachine) can assume the service role, you must configure the correct trust policy in AWS IAM.
Trust Policies: Trust policies determine which entities (services or users) are allowed to assume the role. In this case, we want to restrict the trust policy to only allow the specific state machine (myStateMachine) to assume the role.
Using ArnLike: The condition "ArnLike" is used to specify that the SourceArn (which refers to the ARN of the entity assuming the role) must match a specific ARN. Option A specifies the exact ARN of the myStateMachine state machine, ensuring that only this state machine can assume the role.
Option B: This option is incorrect because it uses a wildcard (*) for the account ID, which would allow any state machine in the ap-south-1 region to assume the role, not just the specific one.
Reference:
AWS Step Functions IAM Policies
NEW QUESTION # 385
A developer is creating a new application that will give users the ability to upload documents to Amazon S3. The contents of the documents must not be accessible to any third party.
Which type of encryption will meet this requirement?
Answer: B
Explanation:
SSE-S3 is a fully managed encryption solution provided by Amazon S3. It automatically encrypts the documents before storing them and decrypts them when accessed. The encryption keys are managed by Amazon S3, and no third parties (other than the user with the proper permissions) can access the encrypted data. This solution ensures that the contents of the documents are kept secure and inaccessible to unauthorized parties, while being simple to implement and manage.
NEW QUESTION # 386
A developer is leveraging a Border Gateway Protocol (BGP)-based AWS VPN connection to connect from on-premises to Amazon EC2 instances in the developer's account. The developer is able to access an EC2 instance in subnet A, but is unable to access an EC2 instance in subnet B in the same VPC. Which logs can the developer use to verify whether the traffic is reaching subnet B?
Answer: B
Explanation:
VPC Flow Logs capture network traffic information going to and from network interfaces in a VPC.
They are the best tool to verify if traffic is reaching subnet B and how it is being handled (accepted or rejected), helping to diagnose connectivity issues at the subnet or instance level.
NEW QUESTION # 387
A developer is monitoring an application that runs on an Amazon EC2 instance. The developer has configured a custom Amazon CloudWatch metric with data granularity of 1 second. If any issues occur, the developer wants to be notified within 30 seconds by Amazon Simple Notification Service (Amazon SNS).
What should the developer do to meet this requirement?
Answer: C
NEW QUESTION # 388
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