CertsTopics Logo

Labour Day Special - Limited Time 65% Discount Offer - Ends in 0d 00h 00m 00s - Coupon code: top65certs

Online DVA-C01 Questions Video

Page: 5 / 23
Total 608 questions
Get DVA-C01 Full Access Download DVA-C01 PDF

AWS Certified Developer Associate Exam Questions and Answers

Question 17

A company is migrating a legacy application to a serverless application on AWS. The legacy application consists of a set of web services that are exposed by a Amazon API Gateway API. A developer needs to replace the existing implementation of web services with AWS Lambda functions. The developer needs to test new version of the" API that uses the functions in production. The developer must minimize the impact of the testing on the application's users.

Which solution will meet these requirements?

Options:

A.

Create a beta stage for the new version of the API. Send the updated endpoint to the users.

B.

Create a development stage for the new version of the API. Use a canary deployment.

C.

Create a development stage for the new version of the API. Promote a canary release.

D.

Create a deployment stage. Enable mutual TLS for the new version of the API.

Question 18

A developer is deploying a company's application to Amazon EC2 instances. The application generates gigabytes of data files each day. The files are rarely accessed, but the files must be available to the application’s users within minutes of a request during the first year of storage. The company must retain the files for 7 years.

How can the developer implement the application to meet these requirements MOST cost-effectively?

Options:

A.

Store the files in an Amazon S3 bucket Use the S3 Glacier Instant Retrieval storage class. Create an S3 Lifecycle policy to transition the files to the S3 Glacier Deep Archive storage class after 1 year.

B.

Store the files in an Amazon S3 bucket. Use the S3 Standard storage class. Create an S3 Lifecycle policy to transition the files to the S3 Glacier Flexible Retrieval storage class after 1 year.

C.

Store the files on an Amazon Elastic Block Store (Amazon EBS) volume. Use Amazon Data Lifecycle Manager (Amazon DLM) to create snapshots of the EBS volumes and to store those snapshots in Amazon S3.

D.

Store the files on an Amazon Elastic File System (Amazon EFS) mount. Configure EFS lifecycle management to transition the files to the EFS Standard-Infrequent Access (Standard-IA) storage class after 1 year.

Question 19

A movie fan club hosts a serverless web application in an Amazon S3 bucket. The application uses an AWS Lambda function that is exposed by an Amazon API Gateway API. The function queries an Amazon DynamoDB table to list actors sorted by movie. In the DynamoDB table. Actor is the primary key, Movie is the sort key, and Role and Year are attributes.

In the web application, a developer wants to add a page that is named Phase 1 that lists only the movies that were released between 2008 and 2012. The developer needs to fetch the Phase 1 items in a way that minimizes the impact on the DynamoDB table.

Which solution will meet these requirements?

Options:

A.

Create a global secondary index (GSl) with the Year attribute as the sort key. Create a Lambda function to return the results from a new method in the API.

B.

Design a Lambda function that scans the DynamoDB table and filters the results for the Phase 1 items. Invoke the function from a new method in the API.

C.

Use a DynamoDB stream to send items that are filtered by Year to a new DynamoDB table. Invoke a Lambda function from a new method in the API.

D.

Set up an Amazon CloudFront distribution. Create a Lambda@Edge function to filter the items that are returned from the API request.

Question 20

A developer is running an application on an Amazon EC2 instance. When the application tries to read an Amazon S3 bucket, the application fails. The developer notices that the associated IAM role is missing the S3 read permission. The developer needs to give the application the ability to read the S3 bucket.

Which solution will meet this requirement with the LEAST application disruption?

Options:

A.

Add the permission to the role. Terminate the existing EC2 instance. Launch a new EC2 instance.

B.

Add the permission to the role so that the change will take effect automatically.

C.

Add the permission to the role. Hibernate and restart the existing EC2 instance.

D.

Add the permission to the S3 bucket. Restart the EC2 instance.

Page: 5 / 23
Total 608 questions
Get DVA-C01 Full Access Download DVA-C01 PDF