Practice DVA-C02 Exam Online

Question 1

A popular mobile app retrieves data from an AWS DynamoDB table that was provisioned with read-capacity units (RCU’s) that are evenly shared across four partitions. One of those partitions is receiving more traffic than the other partitions, causing hot partition issues.

What technology will allow you to reduce the read traffic on your AWS DynamoDB table with minimal effort?

A : ElastiCache

B : DynamoDB DAX

C : More partitions

D : DynamoDB Streams

Answer: B

Question 2

You team maintains a public API Gateway that is accessed by clients from another domain. Usage has been consistent for the last few months but recently it has more than doubled. As a result, your costs have gone up and would like to prevent other unauthorized domains from accessing your API.

Which of the following actions should you take?

A : Use Mapping Templates

B : Restrict access by using CORS

C : Use Account-level throttling

D : Assign a Security Group to your API Gateway

Answer: B

Question 3

A Developer implemented a static website hosted in Amazon S3 that makes web service requests hosted in Amazon API Gateway and AWS Lambda. The site is showing an error that reads:

“No ‘Access-Control-Allow-Origin’ header is present on the requested resource. Origin ‘null’ is therefore not allowed access.”

What should the Developer do to resolve this issue?

A : Enable cross-origin resource sharing (CORS) on the S3 bucket

B : Add the Access-Control-Request-Method header to the request

C : Enable cross-origin resource sharing (CORS) for the method in API Gateway

D : Add the Access-Control-Request-Headers header to the request

Answer: C

Question 4

A web application is using Amazon Kinesis Data Streams for ingesting IoT data that is then stored before processing for up to 24 hours.

How can the Developer implement encryption at rest for data stored in Amazon Kinesis Data Streams?

A : Encrypt the data once it is at rest with an AWS Lambda function

B : Use the Amazon Kinesis Consumer Library (KCL) to encrypt the data

C : Add a certificate and enable SSL/TLS connections to Kinesis Data Streams

D : Enable server-side encryption on Kinesis Data Streams with an AWS KMS CMK

Answer: D

Question 5

A Developer is using AWS SAM to create a template for deploying a serverless application. The Developer plans to leverage an application from the AWS Serverless Application Repository in the template as a nested application.

Which resource type should the Developer specify?

A : AWS::Serverless:SimpleTable

B : AWS::Serverless::Application

C : AWS::Serverless:HttpApi

D : AWS::Serverless:Function

Answer: B

Name:	AWS Certified Developer Associate
Exam Code:	DVA-C02
Certification:	AWS Certified Associate
Vendor:	Amazon
Total Questions:	810
Last Updated:	May 02, 2024

Amazon DVA-C02