Instant Access Amazon.DVA-C02.v2026-02-16.q395 Actual Practice Test Engine for Free (Page 12)

Question 51

A developer is writing a web application that will run on AWS Lambda. The application will give users the ability to log in to view private documents. All pages in the application must be designed to match the company's branding.
How can the developer host the sign-in pages with the LEAST amount of custom code?

A.Upload files for the sign-in pages with the required branding to an Amazon S3 bucket. Configure static website hosting for the S3 bucket.
B.Create a Lambda function to serve the sign-in pages with the required branding. Configure Amazon API Gateway to route traffic to the function.
C.Create a Lambda@Edge function to serve the sign-in pages with the required branding. Configure Amazon CloudFront to invoke the function in response to user requests.
D.Configure an Amazon Cognito user pool with an Amazon Cognito hosted UI for the sign-in pages.Customize the pages with the required branding.

Question 52

A company is creating an application that processes csv files from Amazon S3 A developer has created an S3 bucket The developer has also created an AWS Lambda function to process the csv files from the S3 bucket Which combination of steps will invoke the Lambda function when a csv file is uploaded to Amazon S3? (Select TWO.)

A.Create an Amazon EventBridge rule Configure the rule with a pattern to match the S3 object created event
B.Schedule an Amazon EventBridge rule to run a new Lambda function to scan the S3 bucket.
C.Add a trigger to the existing Lambda function. Set the trigger type to EventBridge Select the Amazon EventBridge rule.
D.Create a new Lambda function to scan the S3 bucket for recently added S3 objects
E.Add S3 Lifecycle rules to invoke the existing Lambda function

Question 53

A developer is creating an application that must be able to generate API responses without backend integrations. Multiple internal teams need to work with the API while the application is still in development.
Which solution will meet these requirements with the LEAST operational overhead?

A.Create an Amazon API Gateway REST API. Set up a proxy resource that has the HTTP proxy integration type.
B.Create an Amazon API Gateway HTTP API. Provision a VPC link, and set up a private integration on the API to connect to a VPC.
C.Create an Amazon API Gateway HTTP API. Enable mock integration on the method of the API resource.
D.Create an Amazon API Gateway REST API. Enable mock integration on the method of the API resource.

Correct Answer: D

Comprehensive Detailed and Lengthy Step-by-Step Explanation with All AWS Developer Reference:
1. Understanding the Use Case:
The API needs to:
Generate responses without backend integrations: This indicates the use of mock responses for testing.
Be used by multiple internal teams during development.
Minimize operational overhead.
2. Key Features of Amazon API Gateway:
REST APIs: Fully managed API Gateway option that supports advanced capabilities like mock integrations, request/response transformation, and more.
HTTP APIs: Lightweight option for building APIs quickly. It supports fewer features but has lower operational complexity and cost.
Mock Integration: Allows API Gateway to return pre-defined responses without requiring backend integration.
3. Explanation of the Options:
Option A:
"Create an Amazon API Gateway REST API. Set up a proxy resource that has the HTTP proxy integration type." A proxy integration requires a backend service for handling requests. This does not meet the requirement of "no backend integrations." Option B:
"Create an Amazon API Gateway HTTP API. Provision a VPC link, and set up a private integration on the API to connect to a VPC." This requires setting up a VPC and provisioning resources, which increases operational overhead and is unnecessary for this use case.
Option C:
"Create an Amazon API Gateway HTTP API. Enable mock integration on the method of the API resource." While HTTP APIs can enable mock integrations, they have limited support for advanced features compared to REST APIs, such as detailed request/response customization. REST APIs are better suited for development environments requiring mock responses.
Option D:
"Create an Amazon API Gateway REST API. Enable mock integration on the method of the API resource." This is the correct answer. REST APIs with mock integration allow defining pre-configured responses directly within API Gateway, making them ideal for scenarios where backend services are unavailable. It provides flexibility for testing while minimizing operational overhead.
4. Implementation Steps:
To enable mock integration with REST API:
Create a REST API in API Gateway:
Open the API Gateway Console.
Choose Create API > REST API.
Define the API Resource and Methods:
Add a resource and method (e.g., GET or POST).
Set Up Mock Integration:
Select the method, and in the Integration Type, choose Mock Integration.
Configure the Mock Response:
Define a 200 OK response with the desired response body and headers.
Deploy the API:
Deploy the API to a stage (e.g., dev) to make it accessible.
5. Why REST API Over HTTP API?
REST APIs support detailed request/response transformations and robust mock integration features, which are ideal for development and testing scenarios.
While HTTP APIs offer lower cost and simplicity, they lack some advanced features required for fine-tuned mock integrations.
Reference:
Amazon API Gateway REST API Features
Mock Integration in API Gateway
Comparison of REST and HTTP APIs in API Gateway

Question 54

A company has built an AWS Lambda function to convert large image files into output files that can be used in a third-party viewer application The company recently added a new module to the function to improve the output of the generated files However, the new module has increased the bundle size and has increased the time that is needed to deploy changes to the function code.
How can a developer increase the speed of the Lambda function deployment?

A.Use AWS CodeDeploy to deploy the function code
B.Use Lambda layers to package and load dependencies.
C.Increase the memory size of the function.
D.Use Amazon S3 to host the function dependencies

Question 55

A company has an existing application that has hardcoded database credentials A developer needs to modify the existing application The application is deployed in two AWS Regions with an active-passive failover configuration to meet company's disaster recovery strategy The developer needs a solution to store the credentials outside the code. The solution must comply With the company's disaster recovery strategy Which solution Will meet these requirements in the MOST secure way?

A.Store the credentials in AWS Secrets Manager in the primary Region. Enable secret replication to the secondary Region Update the application to use the Amazon Resource Name (ARN) based on the Region.
B.Store credentials in AWS Systems Manager Parameter Store in the primary Region. Enable parameter replication to the secondary Region. Update the application to use the Amazon Resource Name (ARN) based on the Region.
C.Store credentials in a config file. Upload the config file to an S3 bucket in me primary Region. Enable Cross-Region Replication (CRR) to an S3 bucket in the secondary region. Update the application to access the config file from the S3 bucket based on the Region.
D.Store credentials in a config file. Upload the config file to an Amazon Elastic File System (Amazon EFS) file system. Update the application to use the Amazon EFS file system Regional endpoints to access the config file in the primary and secondary Regions.

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