What is AWS Certified Developer Associate DVA-C01 Exam ?
The AWS Certified Developer Associate Exam is a certification exam offered by Amazon Web Services (AWS) that validates an individual's expertise in developing and maintaining applications on the AWS platform.
This exam is designed for individuals who have at least one year of experience in developing and maintaining applications on AWS. It covers a range of topics including AWS core services, database and storage services, deployment and management, security and identity, and troubleshooting.
To pass the exam, candidates must demonstrate their ability to write code that uses AWS software development kits (SDKs) and implement code-level security best practices, among other tasks.
Achieving this certification can help individuals demonstrate their skills and knowledge to potential employers and enhance their career prospects in the cloud computing industry. Additionally, this certification can help developers differentiate themselves in the market and demonstrate their ability to design and build secure, scalable, and high-performance applications on the AWS platform.
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Question 1
A company uses the AWS SDK for JavaScript in the Browser to build a web application and then hosts the application on Amazon S3. The company wants the application to support 10,000 users concurrently. The company selects Amazon DynamoDB to store user preferences in a table. There is a requirement to uniquely identify users at any scale. Which solution will meet these requirements?
A. Create a user cookie. Attach an 1AM role to the S3 bucket that hosts the application.
B. Deploy an Amazon CloudFront distribution with an origin access identity (OAI) to access the S3 bucket.
C. Configure and use Amazon Cognito. Access DynamoDB with the authenticated users.
D. Create an IAM user for each user. Use fine-grained access control on the DynamoDB table to control access.
Answer: C
Question 2
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://169.254.169.254/latest/meta-data/.
B. Query the instance user data from http://169 254.169.254/latest/user-data/.
C. Query the Amazon Machine Image (AMI) information from http://169 254.169.254/latesl/meta-data/ami/.
D. Check the hosts file of the operating system.
Answer: A
Question 3
A company has a front-end application that runs on four Amazon EC2 instances behind an Elastic Load Balancer (ELB) in a production environment that is provisioned by AWS Elastic Beanstalk. A developer needs to deploy and test new application code while updating the Elastic Beanstalk platform from the current version to a newer version of Node.js. The solution must result in zero downtime for the application. Which solution meets these requirements?
A. Clone the production environment to a different platform version. Deploy the new application code, and test it. Swap the environment URLs upon verification.
B. Deploy the new application code in an all-at-once deployment to the existing EC2 instances. Test the code. Redeploy the previous code if verification fails.
C. Perform an immutable update to deploy the new application code to new EC2 instances. Serve traffic to the new instances after they pass health checks
D. Use a rolling deployment for the new application code. Apply the code to a subset of EC2 instances until the tests pass. Redeploy the previous code if the tests fail.
Answer: D
Question 4
A company is running an application on AWS Elastic Beanstalk in a single-instance environment. The company's deployments must avoid any downtime. Which deployment option will meet these requirements?
A. All at once
B. Rolling
C. Rolling with additional batch
D. Immutable
Answer: D
Question 5
A company has a serverless application that uses Amazon API Gateway backed by AWS Lambda proxy integration. The company is developing several backend APIs. The company needs a landing page to arovide an overview ol navigation to the APIs. \ developer creates a new /LandingPage resource and a new GET method that uses mock integration. What should the developer do next to meet these requirements?
A. Configure the integration request mapping template with Content-Type of text/html and
statusCode of 200. Configure the integration response mapping template with ContentType of application/json. In the integration response mapping template, include the
LandingPage HTML code that references the APIs.
B. Configure the integration request mapping template with Content-Type of application/json. In the integration request mapping template, include the LandingPage HMTL code that references the APIs. Configure the integration response mapping template with Content-Type of text/html and statusCode of 200.
C. Configure the integration request mapping template with Content-Type of application/json and statusCode of 200. Configure the integration response mapping template with Content-Type of text/html. In the integration response mapping template, include the LandingPage HTML code that references the APIs.
D. Configure the integration request mapping template with Content-Type of text/html. In the integration request mapping template, include the LandingPage HTML code that references the APIs. Configure the integration response mapping template with Content-Type of application/json and statusCode of 200.
Answer: B
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Amazon DVA-C01 Exam Sample Questions