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

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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: 519 Q&A's Shared By: keyaan
Question 52

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. It 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?

Options:

A.

Configure a high-resolution CloudWatch alarm.

B.

Set up a custom CloudWatch dashboard.

C.

Use Amazon CloudWatch Logs Insights.

D.

Change to a default CloudWatch metric.

Discussion
Question 53

A developer has created a data collection application that uses Amazon API Gateway, AWS Lambda, and Amazon S3. The application's users periodically upload data files and wait for the validation status to be reflected on a processing dashboard. The validation process is complex and time-consuming for large files.

Some users are uploading dozens of large files and have to wait and refresh the processing dashboard to see if the files have been validated. The developer must refactor the application to immediately update the validation result on the user’s dashboard without reloading the full dashboard.

What is the MOST operationally efficient solution that meets these requirements?

Options:

A.

Integrate the client with an API Gateway WebSocket API. Save the user-uploaded files with the WebSocket connection ID. Push the validation status to the connection ID when the processing is complete to initiate an update of the UI.

B.

Launch an Amazon EC2 micro instance, and set up a WebSocket server. Send the user-uploaded file and user detail to the EC2 instance after the user uploads the file. Use the WebSocket server to send updates to the UI when the uploaded file is processed.

C.

Save the user's email address along with the user-uploaded file. When the validation process is complete, send an email notification through Amazon SNS to the user who uploaded the file.

D.

Save the user-uploaded file and user detail to Amazon DynamoDB. Use Amazon DynamoDB Streams with Amazon SNS push notifications to send updates to the browser to update the UI.

Discussion
Question 54

A company has an application that runs as a series of AWS Lambda functions. Each Lambda function receives data from an Amazon Simple Notification Service (Amazon SNS) topic and writes the data to an Amazon Aurora DB instance.

To comply with an information security policy, the company must ensure that the Lambda functions all use a single securely encrypted database connection string to access Aurora.

Which solution will meet these requirements'?

Options:

A.

Use IAM database authentication for Aurora to enable secure database connections for ail the Lambda functions.

B.

Store the credentials and read the credentials from an encrypted Amazon RDS DB instance.

C.

Store the credentials in AWS Systems Manager Parameter Store as a secure string parameter.

D.

Use Lambda environment variables with a shared AWS Key Management Service (AWS KMS) key for encryption.

Discussion
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Question 55

A developer has created an AWS Lambda function to provide notification through Amazon Simple Notification Service (Amazon SNS) whenever a file is uploaded to Amazon S3 that is larger than 50 MB. The developer has deployed and tested the Lambda function by using the CLI. However, when the event notification is added to the S3 bucket and a 3.000 MB file is uploaded, the Lambda function does not launch.

Which of the following Is a possible reason for the Lambda function's inability to launch?

Options:

A.

The S3 event notification does not activate for files that are larger than 1.000 MB.

B.

The resource-based policy for the Lambda function does not have the required permissions to be invoked by Amazon S3.

C.

Lambda functions cannot be invoked directly from an S3 event.

D.

The S3 bucket needs to be made public.

Discussion
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