SELECTING THE RELIABLE DVA-C02 EXAM BLUEPRINT MEANS THAT YOU HAVE PASSED AWS CERTIFIED DEVELOPER - ASSOCIATE

Selecting The Reliable DVA-C02 Exam Blueprint Means that You Have Passed AWS Certified Developer - Associate

Selecting The Reliable DVA-C02 Exam Blueprint Means that You Have Passed AWS Certified Developer - Associate

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Tags: Reliable DVA-C02 Exam Blueprint, DVA-C02 Valid Study Questions, DVA-C02 Free Sample Questions, DVA-C02 Latest Exam Cost, Free DVA-C02 Download Pdf

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Exam DVA-C02 questions and answers

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Amazon DVA-C02 is an official certification exam provided by Amazon Web Services (AWS) that validates one's technical knowledge and expertise in developing and deploying applications on the AWS platform. DVA-C02 exam is designed for developers who have at least one year of hands-on experience with AWS services and are familiar with the core AWS services, as well as the best practices for developing, deploying, and debugging applications on AWS.

Amazon AWS Certified Developer - Associate Sample Questions (Q414-Q419):

NEW QUESTION # 414
A company has deployed infrastructure on AWS. A development team wants to create an AWS Lambda function that will retrieve data from an Amazon Aurora database. The Amazon Aurora database is in a private subnet in company's VPC. The VPC is named VPC1. The data is relational in nature. The Lambda function needs to access the data securely.
Which solution will meet these requirements?

  • A. Create the Lambda function. Configure VPC1 access for the function. Assign a security group named SG1 to the Lambda function. Assign a second security group named SG2 to the database. Add an inbound rule to SG1 to allow TCP traffic from Port 3306.
  • B. Export the data from the Aurora database to Amazon S3. Create and launch a Lambda function in VPC1. Configure the Lambda function query the data from Amazon S3.
  • C. Create and launch a Lambda function in a new public subnet that is in a new VPC named VPC2. Create a peering connection between VPC1 and VPC2.
  • D. Create the Lambda function. Configure VPC1 access for the function. Attach a security group named SG1 to both the Lambda function and the database. Configure the security group inbound and outbound rules to allow TCP traffic on Port 3306.

Answer: D

Explanation:
Explanation
AWS Lambda is a service that lets you run code without provisioning or managing servers. Lambda functions can be configured to access resources in a VPC, such as an Aurora database, by specifying one or more subnets and security groups in the VPC settings of the function. A security group acts as a virtual firewall that controls inbound and outbound traffic for the resources in a VPC. To allow a Lambda function to communicate with an Aurora database, both resources need to be associated with the same security group, and the security group rules need to allow TCP traffic on Port 3306, which is the default port for MySQL databases. Reference: [Configuring a Lambda function to access resources in a VPC]


NEW QUESTION # 415
A developer has written the following IAM policy to provide access to an Amazon S3 bucket:

Which access does the policy allow regarding the s3:GetObject and s3:PutObject actions?

  • A. Access on all buckets except the "DOC-EXAMPLE-BUCKET" bucket
  • B. Access on all buckets that start with "DOC-EXAMPLE-BUCKET" except the "DOC-EXAMPLE- BUCKET/secrets" bucket
  • C. Access on all objects in the "DOC-EXAMPLE-BUCKET" bucket along with access to all S3 actions for objects in the "DOC-EXAMPLE-BUCKET" bucket that start with "secrets"
  • D. Access on all objects in the "DOC-EXAMPLE-BUCKET" bucket except on objects that start with
    "secrets"

Answer: D

Explanation:
The IAM policy shown in the image is a resource-based policy that grants or denies access to an S3 bucket based on certain conditions. The first statement allows access to any S3 action on any object in the "DOC- EXAMPLE-BUCKET" bucket when the request is made over HTTPS (the value of aws:SecureTransport is true). The second statement denies access to the s3:GetObject and s3:PutObject actions on any object in the
"DOC-EXAMPLE-BUCKET/secrets" prefix when the request is made over HTTP (the value of aws:
SecureTransport is false). Therefore, the policy allows access on all objects in the "DOC-EXAMPLE- BUCKET" bucket except on objects that start with "secrets". Reference: Using IAM policies for Amazon S3


NEW QUESTION # 416
A developer needs to troubleshoot an AWS Lambda function in a development environment. The Lambda function is configured in VPC mode and needs to connect to an existing Amazon RDS for SOL Server DB instance. The DB instance is deployed in a private subnet and accepts connections by using port 1433.
When the developer tests the function, the function reports an error when it tries to connect to the database.
Which combination of steps should the developer take to diagnose this issue? (Select TWO.)

  • A. Check that the VPC is set up for a NAT gateway. Check that the DB instance has the public access option turned on.
  • B. Check that the function's execution role permissions include rds:DescribeDBInstances, rds: ModifyDB Instance, and rds:DescribeDBSecurityGroups for the DB instance.
  • C. Check that the function's security group has Inbound access on port 1433 from the DB Instance's security group. Check that the DB instance's security group has outbound access on port 1433 to the function's security group.
  • D. Check that the function's security group has outbound access on port 1433 to the DB instance's security group. Check that the DB instance's security group has inbound access on port 1433 from the function's security group.
  • E. Check that the function's execution rote permissions include ec2: CreateNetworklnterface. ec2:
    DescribeNetworklnterfaces. and ec2: DeleteNetworklnterface.

Answer: D,E


NEW QUESTION # 417
A developer is creating a publicly accessible enterprise website consisting of only static assets.
The developer is hosting the website in Amazon S3 and serving the website to users through an Amazon CloudFront distribution. The users of this application must not be able to access the application content directly from an S3 bucket. All content must be served through the Amazon CloudFront distribution.
Which solution will meet these requirements?

  • A. Update the S3 bucket settings. Enable the block all public access setting in Amazon S3.
    Configure the CloudFront distribution's with Amazon S3 as the origin. Update the S3 bucket policy to allow CloudFront write access.
  • B. Update the CloudFront distribution's origin to send a custom header. Update the S3 bucket policy with a condition by using the aws:RequestTag/tag-key key. Configure the tag-key as the custom header name, and the value being matched is the header's value.
  • C. Update the S3 bucket's static website settings. Enable static website hosting and specifying index and error documents. Update the CloudFront origin to use the S3 bucket's website endpoint.
  • D. Create a new origin access control (OAC) in CloudFront. Configure the CloudFront distribution's origin to use the new OAC. Update the S3 bucket policy to allow CloudFront OAC with read and write access to access Amazon S3 as the origin.

Answer: D

Explanation:
https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/private-content- restricting-access-to-s3.html


NEW QUESTION # 418
A company is developing an application that will be accessed through the Amazon API Gateway REST API.
Registered users should be the only ones who can access certain resources of this API. The token being used should expire automatically and needs to be refreshed periodically.
How can a developer meet these requirements?

  • A. Create an 1AM user for each API user, attach an invoke permissions policy to the API. and use an I AM authorizer in API Gateway.
  • B. Create an Amazon Cognito identity pool, configure the Amazon Cognito Authorizer in API Gateway, and use the temporary credentials generated by the identity pool.
  • C. Create and maintain a database record for each user with a corresponding token and use an AWS Lambda authorizer in API Gateway.
  • D. Create an Amazon Cognito user pool, configure the Cognito Authorizer in API Gateway, and use the identity or access token.

Answer: D


NEW QUESTION # 419
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