Amazon DVA-C01 Online Practice Questions and Exam Preparation

Amazon DVA-C01 Online Questions & Answers

• Question 311:

  A Developer is writing a REST service that will add items to a shopping list. The service is built on Amazon API Gateway with AWS Lambda integrations. The shopping list items are send as query string parameters in the method request. How should the Developer convert the query string parameters to arguments for the Lambda function?

  A. Enable request validation

  B. Include the Amazon Resource Name (ARN) of the Lambda function

  C. Change the integration type

  D. Create a mapping template

  Correct Answer: D

  https://docs.aws.amazon.com/apigateway/latest/developerguide/api-gateway-api-integration-types.html https://docs.aws.amazon.com/apigateway/latest/developerguide/integrating-api-with-aws-services- lambda.html#api-as-lambda-proxy-expose-get-method-with-query-strings-to-call-lambda-function

• Question 312:

  An on-premises legacy application is caching data files locally and writing shared images to local disks. What is necessary to allow for horizontal scaling when migrating the application to AWS?

  A. Modify the application to have both shared images and caching data written to Amazon EBS.

  B. Modify the application to read and write cache data on Amazon S3, and also store shared images on S3.

  C. Modify the application to use Amazon S3 for serving shared images; cache data can then be written to local disks.

  D. Modify the application to read and write cache data on Amazon S3, while continuing to write shared images to local disks.

  Correct Answer: C

• Question 313:

  A Developer wants to upload data to Amazon S3 and must encrypt the data in transit. Which of the following solutions will accomplish this task? (Choose two.)

  A. Set up hardware VPN tunnels to a VPC and access S3 through a VPC endpoint

  B. Set up Client-Side Encryption with an AWS KMS-Managed Customer Master Key

  C. Set up Server-Side Encryption with AWS KMS-Managed Keys

  D. Transfer the data over an SSL connection

  E. Set up Server-Side Encryption with S3-Managed Keys

  Correct Answer: BD

  https://docs.aws.amazon.com/AmazonS3/latest/dev/UsingEncryption.html

• Question 314:

  A company is migrating a single-server, on-premises web application to AWS. The company intends to use multiple servers behind an Elastic Load Balancer (ELB) to balance the load, and will also store session data in memory on the web server. The company does not want to lose that session data if a server fails or goes offline, and it wants to minimize user's downtime.

  Where should the company move session data to MOST effectively reduce downtime and make users' session data more fault tolerant?

  A. An Amazon ElastiCache for Redis cluster

  B. A second Amazon EBS volume

  C. The web server's primary disk

  D. An Amazon EC2 instance dedicated to session data

  Correct Answer: A

• Question 315:

  What is the maximum number of S3 Buckets available per AWS account?

  A. 100 per region

  B. there is no limit

  C. 100 per account

  D. 500 per account

  E. 100 per IAM user

  Correct Answer: C

  https://docs.aws.amazon.com/AmazonS3/latest/dev/BucketRestrictions.html

• Question 316:

  To include objects defined by the AWS Serverless Application Model (SAM) in an AWS CloudFormation template, in addition to Resources, what section MUST be included in the document root?

  A. Conditions

  B. Globals

  C. Transform

  D. Properties

  Correct Answer: C

  https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/sam-specification-template-anatomy.html

• Question 317:

  An application is real-time processing millions of events that are received through an API.

  What service could be used to allow multiple consumers to process the data concurrently and MOST cost-effectively?

  A. Amazon SNS with fanout to an SQS queue for each application

  B. Amazon SNS with fanout to an SQS FIFO (first-in, firtst-out) queue for each application

  C. Amazon Kinesis Firehouse

  D. Amazon Kinesis Streams

  Correct Answer: D

• Question 318:

  A Developer is trying to deploy a serverless application using AWS CodeDeploy. The application was updated and needs to be redeployed. What file does the Developer need to update to push that change through CodeDeploy?

  A. dockerrun.aws.json

  B. buildspec.yml

  C. appspec.yml

  D. ebextensions.config

  Correct Answer: C

  https://docs.aws.amazon.com/codedeploy/latest/userguide/application-revisions-push.html

• Question 319:

  An application running on an Amazon Linux EC2 instance needs to manage the AWS infrastructure. How can the EC2 instance be configured to make AWS API calls securely?

  A. Sign the AWS CLI command using the signature version 4 process.

  B. Run the aws configure AWS CLI command and specify the access key id and secret access key.

  C. Specify a role for the EC2 instance with the necessary privileges.

  D. Pass the access key id and secret access key as parameters for each AWS CLI command.

  Correct Answer: C

• Question 320:

  A Developer is making changes to a custom application that is currently using AWS Elastic Beanstalk.

  After the Developer completes the changes, what solutions will update the Elastic Beanstalk environment with the new application version? (Choose two.)

  A. Package the application code into a .zip file, and upload, then deploy the packaged application from the AWS Management Console

  B. Package the application code into a .tar file, create a new application version from the AWS Management Console, then update the environment by using AWS CLI

  C. Package the application code into a .tar file, and upload and deploy the packaged application from the AWS Management Console

  D. Package the application code into a .zip file, create a new application version from the packaged application by using AWS CLI, then update the environment by using AWS CLI

  E. Package the application code into a .zip file, create a new application version from the AWS Management Console, then rebuild the environment by using AWS CLI

  Correct Answer: CD