Amazon DVA-C01 Online Practice Questions and Exam Preparation

Amazon DVA-C01 Online Questions & Answers

• Question 631:

  An application is designed to use Amazon SQS to manage messages from many independent senders. Each sender's messages must be processed in the order they are received. Which SQS feature should be implemented by the Developer?

  A. Configure each sender with a unique MessageGroupId

  B. Enable MessageDeduplicationIds on the SQS queue

  C. Configure each message with unique MessageGroupIds.

  D. Enable ContentBasedDeduplication on the SQS queue

  Correct Answer: A

• Question 632:

  A Developer wants to find a list of items in a global secondary index from an Amazon DynamoDB table.

  Which DynamoDB API call can the Developer use in order to consume the LEAST number of read capacity units?

  A. Scan operation using eventually-consistent reads

  B. Query operation using strongly-consistent reads

  C. Query operation using eventually-consistent reads

  D. Scan operation using strongly-consistent reads

  Correct Answer: C

  https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/bp-query-scan.html

• Question 633:

  How can you secure data at rest on an EBS volume?

  A. Attach the volume to an instance using EC2's SSL interface.

  B. Write the data randomly instead of sequentially.

  C. Use an encrypted file system on top of the BBS volume.

  D. Encrypt the volume using the S3 server-side encryption service.

  E. Create an IAM policy that restricts read and write access to the volume.

  Correct Answer: C

• Question 634:

  You have written an application that uses the Elastic Load Balancing service to spread traffic to several web servers. Your users complain that they are sometimes forced to login again in the middle of using your application, after they have

  already logged in. This is not behavior you have designed.

  What is a possible solution to prevent this happening?

  A. Use instance memory to save session state.

  B. Use instance storage to save session state.

  C. Use EBS to save session state

  D. Use ElastiCache to save session state.

  E. Use Glacier to save session slate.

  Correct Answer: D

  https://aws.amazon.com/caching/session-management/

• Question 635:

  You are inserting 1000 new items every second in a DynamoDB table. Once an hour these items are analyzed and then are no longer needed. You need to minimize provisioned throughput, storage, and API calls. Given these requirements, what is the most efficient way to manage these Items after the analysis?

  A. Retain the items in a single table

  B. Delete items individually over a 24 hour period

  C. Delete the table and create a new table per hour

  D. Create a new table per hour

  Correct Answer: C