USE THE AMAZON DVA-C02 EXAM QUESTIONS FOR A SUCCESSFUL CERTIFICATION

Use the Amazon DVA-C02 Exam Questions for a Successful Certification

Use the Amazon DVA-C02 Exam Questions for a Successful Certification

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Amazon DVA-C02 exam is a valuable certification for developers who want to demonstrate their expertise in AWS development. It validates the candidate's ability to design, develop, and deploy cloud-based applications using AWS services and tools. To pass the exam, candidates should have a good understanding of AWS core services, be proficient in at least one programming language, and have experience working with AWS SDKs and APIs.

The DVA-C02 Exam measures the candidate's knowledge in various aspects of AWS development, including AWS core services, AWS security, serverless applications, and deploying and managing AWS services. DVA-C02 exam consists of 65 multiple-choice and multiple-response questions, and the candidate has 130 minutes to complete the exam.

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The Amazon DVA-C02 exam focuses on a wide range of topics related to AWS, including programming languages, development tools, and architectural best practices. It covers topics such as AWS core services, databases, security, and deployment. DVA-C02 Exam also tests the candidate's ability to design and develop scalable, fault-tolerant, and highly available applications on the AWS platform.

Amazon AWS Certified Developer - Associate Sample Questions (Q419-Q424):

NEW QUESTION # 419
A developer maintains an Amazon API Gateway REST API. Customers use the API through a frontend UI and Amazon Cognito authentication.
The developer has a new version of the API that contains new endpoints and backward-incompatible interface changes. The developer needs to provide beta access to other developers on the team without affecting customers.
Which solution will meet these requirements with the LEAST operational overhead?

  • A. Implement a query parameter in the API application code that determines which code version to call.
  • B. Define a new API Gateway API that points to the new API application code. Instruct the other developers to point the endpoints to the new API.
  • C. Specify new API Gateway endpoints for the API endpoints that the developer wants to add.
  • D. Define a development stage on the API Gateway API. Instruct the other developers to point the endpoints to the development stage.

Answer: D


NEW QUESTION # 420
An organization is using Amazon CloudFront to ensure that its users experience low-latency access to its web application. The organization has identified a need to encrypt all traffic between users and CloudFront, and all traffic between CloudFront and the web application.
How can these requirements be met? (Select TWO)

  • A. Enable the CloudFront option Restrict Viewer Access.
  • B. Use AWS KMS t0 encrypt traffic between cloudFront and the web application.
  • C. Set the Viewer Protocol Policy to "HTTPS Only" or Redirect HTTP to HTTPS"
  • D. Set the Origin's HTTP Port to 443.
  • E. Set the Origin Protocol Policy to "HTTPS Only".

Answer: C,E

Explanation:
This solution will meet the requirements by ensuring that all traffic between users and CloudFront, and all traffic between CloudFront and the web application, are encrypted using HTTPS protocol. The Origin Protocol Policy determines how CloudFront communicates with the origin server (the web application), and setting it to "HTTPS Only" will force CloudFront to use HTTPS for every request to the origin server. The Viewer Protocol Policy determines how CloudFront responds to HTTP or HTTPS requests from users, and setting it to "HTTPS Only" or "Redirect HTTP to HTTPS" will force CloudFront to use HTTPS for every response to users. Option A is not optimal because it will use AWS KMS to encrypt traffic between CloudFront and the web application, which is not necessary or supported by CloudFront. Option C is not optimal because it will set the origin's HTTP port to 443, which is incorrect as port 443 is used for HTTPS protocol, not HTTP protocol. Option E is not optimal because it will enable the CloudFront option Restrict Viewer Access, which is used for controlling access to private content using signed URLs or signed cookies, not for encrypting traffic.
References: [Using HTTPS with CloudFront], [Restricting Access to Amazon S3 Content by Using an Origin Access Identity]


NEW QUESTION # 421
You have been doing a lot of testing of your VPC Network by deliberately failing EC2 instances to test whether instances are failing over properly. Your customer who will be paying the AWS bill for all this asks you if he being charged for all these instances. You try to explain to him how the billing works on EC2 instances to the best of your knowledge. What would be an appropriate response to give to the customer in regards to this?

  • A. Billing commences when Amazon EC2 initiates the boot sequence of an AMI instance and billing ends when the instance shuts down.
  • B. Billing only commences only after 1 hour of uptime and billing ends when the instance terminates.
  • C. Billing commences when Amazon EC2 initiates the boot sequence of an AMI instance and billing ends as soon as the instance starts to shutdown.
  • D. Billing commences when Amazon EC2 AMI instance is completely up and billing ends as soon as the instance starts to shutdown.

Answer: A

Explanation:
Billing commences when Amazon EC2 initiates the boot sequence of an AMI instance. Billing ends when the instance shuts down, which could occur through a web services command, by running "shutdown -h", or through instance failure.
http://aws.amazon.com/ec2/faqs/#Billing


NEW QUESTION # 422
A developer is using AWS CloudFormation to deploy an AWS Lambda function. The developer needs to set the Lambda function's timeout value based on the environment parameter of the template. The template contains mappings of EnvironmentData for each environment's timeout value. The environment parameter and EnvironmentData mappings are as follows:
Environment parameter:
EnvironmentData mappings:
Which statement will meet these requirements?

  • A.
  • B.
  • C.
  • D.

Answer: A


NEW QUESTION # 423
A developer is building an application that stores sensitive user data. The application includes an Amazon CloudFront distribution and multiple AWS Lambda functions that handle user requests.
The user requests contain over 20 data fields. Each application transaction contains sensitive data that must be encrypted. Only specific parts of the application need to have the ability to decrypt the data.
Which solution will meet these requirements?

  • A. Associate the CloudFront distribution with a Lambda@Edge function. Configure the function to perform field-level asymmetric encryption by using a user-defined RSA public key that is stored in AWS Key Management Service (AWS KMS).
  • B. Configure the CloudFront distribution to use WebSockets by forwarding all viewer request headers to the origin. Create an asymmetric AWS KMS key. Configure the CloudFront distribution to use field-level encryption. Use the AWS KMS key.
  • C. Configure the cache behavior in the CloudFront distribution to require HTTPS for communication between viewers and CloudFront. Configure GoudFront to require users to access the files by using either signed URLs or signed cookies.
  • D. Integrate AWS WAF with CloudFront to protect the sensitive data. Use a Lambda function and self-managed keys to perform the encryption and decryption processes.

Answer: B

Explanation:
CloudFront supports field-level encryption, which allows you to encrypt specific parts of the request data (such as sensitive user data fields) before it is sent to the origin. By configuring CloudFront to use field-level encryption and integrating it with AWS KMS, you can securely encrypt sensitive data using KMS-managed keys and ensure that only specific parts of your application (such as your origin or Lambda functions) can decrypt the data. This solution is designed for handling sensitive data in a way that provides both security and flexibility, with KMS providing secure key management and encryption.


NEW QUESTION # 424
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