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  5. AWS Certified Developer - Associate DVA-C02

Free AWS Certified Developer - Associate DVA-C02 Exam Braindumps (page: 7)

Page 7 of 116
PDF with 458 Questions

A company is migrating an on-premises database to Amazon RDS for MySQL. The company has read-heavy workloads. The company wants to refactor the code to achieve optimum read performance for queries.
Which solution will meet this requirement with LEAST current and future effort?

  1. Use a multi-AZ Amazon RDS deployment. Increase the number of connections that the code makes to the database or increase the connection pool size if a connection pool is in use.
  2. Use a multi-AZ Amazon RDS deployment. Modify the code so that queries access the secondary RDS instance.
  3. Deploy Amazon RDS with one or more read replicas. Modify the application code so that queries use the URL for the read replicas.
  4. Use open source replication software to create a copy of the MySQL database on an Amazon EC2 instance. Modify the application code so that queries use the IP address of the EC2 instance.

Answer(s): C



A developer is creating an application that will be deployed on IoT devices. The application will send data to a RESTful API that is deployed as an AWS Lambda function. The application will assign each API request a unique identifier. The volume of API requests from the application can randomly increase at any given time of day.
During periods of request throttling, the application might need to retry requests. The API must be able to handle duplicate requests without inconsistencies or data loss.
Which solution will meet these requirements?

  1. Create an Amazon RDS for MySQL DB instance. Store the unique identifier for each request in a database table. Modify the Lambda function to check the table for the identifier before processing the request.
  2. Create an Amazon DynamoDB table. Store the unique identifier for each request in the table. Modify the Lambda function to check the table for the identifier before processing the request.
  3. Create an Amazon DynamoDB table. Store the unique identifier for each request in the table. Modify the Lambda function to return a client error response when the function receives a duplicate request.
  4. Create an Amazon ElastiCache for Memcached instance. Store the unique identifier for each request in the cache. Modify the Lambda function to check the cache for the identifier before processing the request.

Answer(s): B



A developer wants to expand an application to run in multiple AWS Regions. The developer wants to copy Amazon Machine Images (AMIs) with the latest changes and create a new application stack in the destination Region. According to company requirements, all AMIs must be encrypted in all Regions. However, not all the AMIs that the company uses are encrypted.
How can the developer expand the application to run in the destination Region while meeting the encryption requirement?

  1. Create new AMIs, and specify encryption parameters. Copy the encrypted AMIs to the destination Region. Delete the unencrypted AMIs.
  2. Use AWS Key Management Service (AWS KMS) to enable encryption on the unencrypted AMIs. Copy the encrypted AMIs to the destination Region.
  3. Use AWS Certificate Manager (ACM) to enable encryption on the unencrypted
    AMIs. Copy the encrypted AMIs to the destination Region.
  4. Copy the unencrypted AMIs to the destination Region. Enable encryption by default in the destination Region.

Answer(s): A



A company hosts a client-side web application for one of its subsidiaries on Amazon
S3. The web application can be accessed through Amazon CloudFront from https://www.example.com. After a successful rollout, the company wants to host three more client-side web applications for its remaining subsidiaries on three separate
S3
buckets.
To achieve this goal, a developer moves all the common JavaScript files and web fonts to a central S3 bucket that serves the web applications. However, during testing, the developer notices that the browser blocks the JavaScript files and web fonts.
What should the developer do to prevent the browser from blocking the JavaScript files and web fonts?

  1. Create four access points that allow access to the central S3 bucket. Assign an access point to each web application bucket.
  2. Create a bucket policy that allows access to the central S3 bucket. Attach the bucket policy to the central S3 bucket
  3. Create a cross-origin resource sharing (CORS) configuration that allows access to the central S3 bucket. Add the CORS configuration to the central
    S3 bucket.
  4. Create a Content-MD5 header that provides a message integrity check for the central S3 bucket. Insert the Content-MD5 header for each web application request.

Answer(s): C



Page 7 of 116



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Ernesto commented on August 26, 2024
Prepared and passed this exam. Valid question and very tough exam. So good luck.
Spain
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