NEW DVA-C02 DUMPS BOOK & NEW DVA-C02 LEARNING MATERIALS

New DVA-C02 Dumps Book & New DVA-C02 Learning Materials

New DVA-C02 Dumps Book & New DVA-C02 Learning Materials

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Amazon AWS Certified Developer - Associate Sample Questions (Q255-Q260):

NEW QUESTION # 255
A company runs a critical application on Amazon Elastic Container Service (Amazon ECS) by using Amazon EC2 instances. The company needs to migrate the application to Amazon ECS on AWS Fargate. A developer is configuring Fargate and the ECS capacity providers to make the change.
Which solution will meet these requirements with the LEAST downtime during migration?

  • A. Use the CreateCapacityProvider API operation to associate the ECS cluster with the FARGATE and FARGATE_SPOT capacity provider strategies. Use FARGATE_SPOT as Provider 1 with a base value. Use FARGATE as Provider 2 for failover.
  • B. Use the CreateCapacityProvider API operation to associate the ECS cluster with the FARGATE and FARGATE_SPOT capacity provider strategies. Use FARGATE as Provider 1 with a base value. Use FARGATE_SPOT as Provider 2 for failover.
  • C. Use the PutClusterCapacityProviders API operation to associate the ECS cluster with the FARGATE and FARGATE_SPOT capacity provider strategies. Use FARGATE as Provider 1 with a base value. Use FARGATE_SPOT as Provider 2 for failover.
  • D. Use the PutClusterCapacityProviders API operation to associate the ECS cluster with the FARGATE and FARGATE_SPOT capacity provider strategies. Use FARGATE_SPOT as Provider 1 with a base value. Use FARGATE as Provider 2 for failover.

Answer: C


NEW QUESTION # 256
A company is offering APIs as a service over the internet to provide unauthenticated read access to statistical information that is updated daily. The company uses Amazon API Gateway and AWS Lambda to develop the APIs. The service has become popular, and the company wants to enhance the responsiveness of the APIs.
Which action can help the company achieve this goal?

  • A. Enable cross-origin resource sharing (CORS) for the APIs.
  • B. Configure API Gateway to use an interface VPC endpoint.
  • C. Configure usage plans and API keys in API Gateway.
  • D. Enable API caching in API Gateway.

Answer: D

Explanation:
Explanation
Amazon API Gateway is a service that enables developers to create, publish, maintain, monitor, and secure APIs at any scale. The developer can enable API caching in API Gateway to cache responses from the backend integration point for a specified time-to-live (TTL) period. This can improve the responsiveness of the APIs by reducing the number of calls made to the backend service.
References:
[What Is Amazon API Gateway? - Amazon API Gateway]
[Enable API Caching to Enhance Responsiveness - Amazon API Gateway]


NEW QUESTION # 257
A developer deployed an application to an Amazon EC2 instance The application needs to know the public IPv4 address of the instance How can the application find this information?

  • A. Query the instance metadata from http./M69.254.169.254. latestmeta-data/.
  • B. Check the hosts file of the operating system
  • C. Query the Amazon Machine Image (AMI) information from http://169.254.169.254/latest/meta-data/ami/.
  • D. Query the instance user data from http '169 254.169 254. latest/user-data/

Answer: A

Explanation:
Instance Metadata Service: EC2 instances have access to an internal metadata service. It provides instance-specific information like instance ID, security groups, and public IP address.
Accessing Metadata:
Make an HTTP GET request to the base URL: http://169.254.169.254/latest/meta-data/ You'll get a list of available categories. The public IPv4 address is under public-ipv4.
Reference:
Instance Metadata and User Data: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instancedata-data-retrieval.html


NEW QUESTION # 258
A developer wants to insert a record into an Amazon DynamoDB table as soon as a new file is added to an Amazon S3 bucket.
Which set of steps would be necessary to achieve this?

  • A. Create a cron job that will run at a scheduled time and insert the records into DynamoDB.
  • B. Create an event with Amazon EventBridge that will monitor the S3 bucket and then insert the records into DynamoDB.
  • C. Create an AWS Lambda function that will poll the S3 bucket and then insert the records into DynamoDB.
  • D. Configure an S3 event to invoke an AWS Lambda function that inserts records into DynamoDB.

Answer: D

Explanation:
Configure S3 event as trigger to lambda.
Allow lambda to insert records in Dynamo DB.
https://docs.aws.amazon.com/AmazonS3/latest/userguide/NotificationHowTo.html


NEW QUESTION # 259
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?

  • A. Use the application API endpoint in the VPC as a target for EventBridge. Send events directly to the application API endpoint from EventBridge.
  • B. 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.
  • C. 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.
  • D. 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.

Answer: B

Explanation:
* Why Option A is Correct:Running an AWS Lambda function within the same VPC ensures secure communication without exposing the API application to public IP addresses. The Lambda function can serve as a secure EventBridge target to send events to the API.
* Why Other Options are Incorrect:
* Option B & C: Internet-facing load balancers expose public IP addresses, which violates compliance requirements.
* Option D: EventBridge cannot directly target an endpoint within a private VPC without intermediary services like Lambda.
* AWS Documentation References:
* EventBridge Targets


NEW QUESTION # 260
......

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