AWS Certified Associate DVA-C02 Reddit Questions

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Question 44

A developer is creating an AWS Lambda function that searches for Items from an Amazon DynamoDQ table that contains customer contact information. The DynamoDB table items have the customers as the partition and additional properties such as customer -type, name, and job_title.

The Lambda function runs whenever a user types a new character into the customer_type text Input. The developer wants to search to return partial matches of all tne email_address property of a particular customer type. The developer does not want to recreate the DynamoDB table.

What should the developer do to meet these requirements?

Options:

Add a global secondary index (GSI) to the DynamoDB table with customer-type input, as the partition key and email_address as the sort key. Perform a query operation on the GSI by using the begins with key condition expression with the email_address property.

Add a global secondary index (GSI) to the DynamoDB table with email_address as the partition key and customer_type as the sort key. Perform a query operation on the GSI by using the begine_with key condition expresses with the email. Address property.

Add a local secondary index (LSI) to the DynemoOB table with customer_type as the partition Key and email_address as the sort Key. Perform a quick operation on the LSI by using the begine_with Key condition expression with the email-address property.

Add a local secondary index (LSI) to the DynamoDB table with job-title as the partition key and email_address as the sort key. Perform a query operation on the LSI by using the begins_with key condition expression with the email_address property.

Question 45

A developer has written an AWS Lambda function. The function is CPU-bound. The developer wants to ensure that the function returns responses quickly.

How can the developer improve the function's performance?

Options:

Increase the function's CPU core count.

Increase the function's memory.

Increase the function's reserved concurrency.

Increase the function's timeout.

Question 46

A developer is preparing to begin development of a new version of an application. The previous version of the application is deployed in a production environment. The developer needs to deploy fixes and updates to the current version during the development of the new version of the application. The code for the new version of the application is stored in AWS CodeCommit.

Which solution will meet these requirements?

Options:

From the main branch, create a feature branch for production bug fixes. Create a second feature branch from the main branch for development of the new version.

Create a Git tag of the code that is currently deployed in production. Create a Git tag for the development of the new version. Push the two tags to the CodeCommit repository.

From the main branch, create a branch of the code that is currently deployed in production. Apply an IAM policy that ensures no other other users can push or merge to the branch.

Create a new CodeCommit repository for development of the new version of the application. Create a Git tag for the development of the new version.

Question 47

A developer is building a highly secure healthcare application using serverless components. This application requires writing temporary data to /Imp storage on an AWS Lambda function.

How should the developer encrypt this data?

Options:

Enable Amazon EBS volume encryption with an AWS KMS key in the Lambda function configuration so that all storage attached to the Lambda function is encrypted.

Set up the Lambda function with a role and key policy to access an AWS KMS key. Use the key to generate a data key used to encrypt all data prior to writing to Amp storage.

Use OpenSSL to generate a symmetric encryption key on Lambda startup. Use this key to encrypt the data prior to writing to /tmp.

Use an on-premises hardware security module (HSM) to generate keys, where the Lambda function requests a data key from the HSM and uses that to encrypt data on all requests to the function.

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