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Amazon Web Services Updated DVA-C02 Exam Questions and Answers by lula

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Amazon Web Services DVA-C02 Exam Overview :

Exam Name: AWS Certified Developer - Associate
Exam Code: DVA-C02 Dumps
Vendor: Amazon Web Services Certification: AWS Certified Associate
Questions: 368 Q&A's Shared By: lula
Question 100

A developer is investigating an issue in part of a company's application. In the application messages are sent to an Amazon Simple Queue Service (Amazon SQS) queue The AWS Lambda function polls messages from the SQS queue and sends email messages by using Amazon Simple Email Service (Amazon SES) Users have been receiving duplicate email messages during periods of high traffic.

Which reasons could explain the duplicate email messages? (Select TWO.)

Options:

A.

Standard SQS queues support at-least-once message delivery

B.

Standard SQS queues support exactly-once processing, so the duplicate email messages are because of user error.

C.

Amazon SES has the DomainKeys Identified Mail (DKIM) authentication incorrectly configured

D.

The SQS queue's visibility timeout is lower than or the same as the Lambda function's timeout.

E.

The Amazon SES bounce rate metric is too high.

Discussion
Question 101

A developer is incorporating AWS X-Ray into an application that handles personal identifiable information (PII). The application is hosted on Amazon EC2 instances. The application trace messages include encrypted PII and go to Amazon CloudWatch. The developer needs to ensure that no PII goes outside of the EC2 instances.

Which solution will meet these requirements?

Options:

A.

Manually instrument the X-Ray SDK in the application code.

B.

Use the X-Ray auto-instrumentation agent.

C.

Use Amazon Macie to detect and hide PII. Call the X-Ray API from AWS Lambda.

D.

Use AWS Distro for Open Telemetry.

Discussion
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Question 102

A developer is creating an ecommerce workflow in an AWS Step Functions state machine that includes a HTTP Task state. The task passes shipping information and order details to an endpoint.

The developer needs to test the workflow to confirm that the HTTP headers and body are correct and that the responses meet expectations.

Options:

A.

Use the TestState API to invoke only the HTTP Task. Set the inspection level to TRACE.

B.

Use the TestState API to invoke the state machine. Set the inspection level to DEBUG.

C.

Use the data flow simulator to invoke only the HTTP Task. View the request and response data.

D.

Change the log level of the state machine to ALL. Run the state machine.

Discussion
Question 103

A company wants to migrate applications from its on-premises servers to AWS. As a first step, the company is modifying and migrating a non-critical application to a single Amazon EC2 instance. The application will store information in an Amazon S3 bucket. The company needs to follow security best practices when deploying the application on AWS.

Which approach should the company take to allow the application to interact with Amazon S3?

Options:

A.

Create an 1AM role that has administrative access to AWS. Attach the role to the EC2 instance.

B.

Create an 1AM user. Attach the AdministratorAccess policy. Copy the generated access key and secret key. Within the application code, use the access key and secret key along with the AWS SDK to communicate with Amazon S3.

C.

Create an 1AM role that has the necessary access to Amazon S3. Attach the role to the EC2 instance.

D.

Create an 1AM user. Attach a policy that provides the necessary access to Amazon S3. Copy the generated access key and secret key. Within the application code, use the access key and secret key along with the AWS SDK to communicate with Amazon S3.

Discussion
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