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Amazon Web Services DVA-C02 Questions Answers

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Total 344 questions
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AWS Certified Developer - Associate Questions and Answers

Question 85

A company hosts a client-side web application for one of its subsidiaries on Amazon S3. The web application can be accessed through Amazon CloudFront from After a successful rollout, the company wants to host three more client-side web applications for its remaining subsidiaries on three separate S3 buckets.

To achieve this goal, a developer moves all the common JavaScript files and web fonts to a central S3 bucket that serves the web applications. However, during testing, the developer notices that the browser blocks the JavaScript files and web fonts.

What should the developer do to prevent the browser from blocking the JavaScript files and web fonts?

Options:

A.

Create four access points that allow access to the central S3 bucket. Assign an access point to each web application bucket.

B.

Create a bucket policy that allows access to the central S3 bucket. Attach the bucket policy to the central S3 bucket.

C.

Create a cross-origin resource sharing (CORS) configuration that allows access to the central S3 bucket. Add the CORS configuration to the central S3 bucket.

D.

Create a Content-MD5 header that provides a message integrity check for the central S3 bucket. Insert the Content-MD5 header for each web application request.

Question 86

A developer is troubleshooting a three-tier application, which is deployed on Amazon EC2 instances. There is a connectivity problem between the application servers and the database servers.

Which AWS services or tools should be used to identify the faulty component? (Select TWO.)

Options:

A.

AWS CloudTrail

B.

AWS Trusted Advisor

C.

Amazon VPC Flow Logs

D.

Network access control lists

E.

AWS Config rules

Question 87

A developer has observed an increase in bugs in the AWS Lambda functions that a development team has deployed in its Node.js application.

To minimize these bugs, the developer wants to implement automated testing of Lambda functions in an environment that closely simulates the Lambda environment.

The developer needs to give other developers the ability to run the tests locally. The developer also needs to integrate the tests into the team's continuous integration and continuous delivery (CI/CD) pipeline before the AWS Cloud Development Kit (AWS CDK) deployment.

Which solution will meet these requirements?

Options:

A.

Create sample events based on the Lambda documentation. Create automated test scripts that use the cdk local invoke command to invoke the Lambda functions. Check the response. Document the test scripts for the other developers on the team. Update the CI/CD pipeline to run the test scripts.

B.

Install a unit testing framework that reproduces the Lambda execution environment. Create sample events based on the Lambda documentation. Invoke the handler function by using a unit testing framework. Check the response. Document how to run the unit testing framework for the other developers on the team. Update the CI/CD pipeline to run the unit testing framework.

C.

Install the AWS Serverless Application Model (AWS SAM) CLI tool. Use the sam local generate-event command to generate sample events for the automated tests. Create automated test scripts that use the sam local invoke command to invoke the Lambda functions. Check the response. Document the test scripts for the other developers on the team. Update the CI/CD pipeline to run the test scripts.

D.

Create sample events based on the Lambda documentation. Create a Docker container from the Node.js base image to invoke the Lambda functions. Check the response. Document how to run the Docker container for the other developers on the team. Update the CllCD pipeline to run the Docker container.

Question 88

A company regularly receives route status updates from its delivery trucks as events in Amazon EventBridge. The company is building an API-based application in a VPC that will consume and process the events to create a delivery status dashboard. The API application must not be available by using public IP addresses because of security and compliance requirements.

How should the company send events from EventBridge to the API application?

Options:

A.

Create an AWS Lambda function that runs in the same VPC as the API application. Configure the function as an EventBridge target. Use the function to send events to the API.

B.

Create an internet-facing Application Load Balancer (ALB) in front of the API application. Associate a security group with rules that block access from all external sources except for EventBridge. Configure the ALB as an EventBridge target.

C.

Create an internet-facing Network Load Balancer (NLB) in front of the API application. Associate a security group with rules that block access from all external sources except for EventBridge. Configure the NLB as an EventBridge target.

D.

Use the application API endpoint in the VPC as a target for EventBridge. Send events directly to the application API endpoint from EventBridge.

Page: 22 / 26
Total 344 questions
Get DVA-C02 Full Access Download DVA-C02 PDF