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Amazon Web Services Updated DVA-C02 Exam Questions and Answers by tomos

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Amazon Web Services DVA-C02 Exam Overview :

Exam Name: AWS Certified Developer - Associate
Exam Code: DVA-C02 Dumps
Vendor: Amazon Web Services Certification: AWS Certified Associate
Questions: 546 Q&A's Shared By: tomos
Question 124

A developer has an application that makes batch requests directly to Amazon DynamoDB by using the BatchGetItem low-level API operation. The responses frequently return values in the UnprocessedKeys element.

Which actions should the developer take to increase the resiliency of the application when the batch response includes values in UnprocessedKeys? (Choose two.)

Options:

A.

Retry the batch operation immediately.

B.

Retry the batch operation with exponential backoff and randomized delay.

C.

Update the application to use an AWS software development kit (AWS SDK) to make the requests.

D.

Increase the provisioned read capacity of the DynamoDB tables that the operation accesses.

E.

Increase the provisioned write capacity of the DynamoDB tables that the operation accesses.

Discussion
Question 125

A developer is storing JSON files in an Amazon S3 bucket. The developer wants to securely share an object with a specific group of people.

How can the developer securely provide temporary access to the objects that are stored in the S3 bucket?

Options:

A.

Set object retention on the files. Use the AWS SDK to restore the object before subsequent requests. Provide the bucket’s S3 URL.

B.

Use the AWS SDK to generate a presigned URL. Provide the presigned URL.

C.

Set a bucket policy that restricts access after a period of time. Provide the bucket ' s S3 URL.

D.

Configure static web hosting on the S3 bucket. Provide the bucket ' s web URL.

Discussion
Question 126

A developer is using an AWS account to build an application that stores files in an Amazon S3 bucket. Files must be encrypted at rest by AWS KMS keys. A second AWS account must have access to read files from the bucket.

The developer wants to minimize operational overhead for the application.

Which combination of solutions will meet these requirements? (Select TWO.)

Options:

A.

Use a customer managed key to encrypt the files. Create a key policy that grants kms: Decrypt permissions to the second AWS account.

B.

Use an AWS managed key to encrypt the files. Create a key policy that grants kms:Decrypt permissions to the second AWS account.

C.

Create a service control policy (SCP) that grants s3:GetObject permissions to the second AWS account.

D.

Create a bucket policy for the S3 bucket that grants s3:GetObject permissions to the second AWS account.

E.

Create a gateway endpoint for the S3 bucket. Modify the endpoint policy to grant s3:GetObject permissions to the second AWS account.

Discussion
Question 127

A developer created several AWS Lambda functions that write data to a single Amazon S3 bucket. The developer configured all the Lambda functions to send logs and metrics to Amazon CloudWatch.

The developer receives reports that one of the Lambda functions writes data to the bucket very slowly. The developer needs to measure the latency between the problematic Lambda function and the S3 bucket.

Which solution will meet this requirement?

Options:

A.

Enable AWS X-Ray on the Lambda function. In the generated trace map. select the line between Lambda and Amazon S3.

B.

Query the Lambda function ' s log file in Amazon CloudWatch Logs Insights. Return the average of the auto-discovered ©duration field.

C.

Enable CloudWatch Lambda Insights on the function. View the latency graph that CloudWatch Lambda Insights provides.

D.

Enable AWS X-Ray on the Lambda function. Select Amazon S3 in the latency graph to view the latency histogram.

Discussion
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