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NEW QUESTION 37
You are providing AWS consulting services for a company developing a new mobile application that will be leveraging Amazon SNS Mobile Push for push notifications. In order to send direct notification messages to individual devices each device registration identifier or token needs to be registered with SNS; however the developers are not sure of the best way to do this.
You advise them to:

• A. Call the CreatePlatformEndPoint API function to register multiple device tokens.
• B. Implement a token vending service to handle the registration.
• C. Bulk upload the device tokens contained in a CSV file via the AWS Management Console.
• D. Let the push notification service (e.g. Amazon Device Messaging) handle the registration.

Answer: A

Explanation:
https://docs.aws.amazon.com/sns/latest/dg/mobile-push-send-devicetoken.html

NEW QUESTION 38
An application writes items to an Amazon DynamoDB table. As the application scales to thousands of instances, calls to the DynamoDB API generate occasional ThrottlingException errors. The application is coded in a language incompatible with the AWS SDK.
How should the error be handled?

• A. Pass API calls through Amazon API Gateway
• B. Use Amazon SQS as an API message bus
• C. Send the items to DynamoDB through Amazon Kinesis Data Firehose
• D. Add exponential backoff to the application logic

Answer: D

Explanation:
Explanation/Reference: https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Programming.Errors.html

NEW QUESTION 39
n on-premises application makes repeated calls to store files to Amazon S3. As usage of the application has increased, "LimitExceeded" errors are being logged.
What should be changed to fix this error?

• A. Implement exponential backoffs in the application.
• B. Load balance the application to multiple servers.
• C. Move the application to Amazon EC2.
• D. Add a one second delay to each API call.

Answer: A

NEW QUESTION 40
A company has an application that logs all information to Amazon S3. Whenever there is a new log file, an AWS Lambda function is invoked to process the log files. The code works, gathering all of the necessary information. However, when checking the Lambda function logs, duplicate entries with the same request ID are found.
What is causing the duplicate entries?

• A. The application stopped intermittently and then resumed.
• B. The Lambda function failed, and the Lambda service retried the invocation with a delay.
• C. The S3 bucket name was specified incorrectly.
• D. There was an S3 outage, which caused duplicate entries of the same log file.

Answer: B

NEW QUESTION 41
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