Developing Day 2

A software engineer is developing an application in AWS using AWS SDK. To deal with errors generated in the network environment, you need a mechanism implemented in the AWS SDK. Which of the following mechanisms is suitable?

• Multiple SQS queues

• Exponential backoff algorithm

• For-loop operations

• Decreasing the number of retries

You're developing an application that will be hosted on an EC2 instance. This will be part of an Autoscaling Group. The application needs to get private IP of the instance to send it across to a controller-based application. Which of the following can be done to achieve this?

• Query the Instance Meta Data

• Query the Instance User Data

• Have an Admin get the IP address from the console

• Make the application run IFConfig

You are using S3 Buckets to store images. The S3 buckets invoke a Lambda function on upload. The Lambda function creates thumbnails of the images and stores them in another S3 bucket. An AWS CloudFormation template is used to create the Lambda function with the resource "AWS::Lambda::Function". Which of the following functions would Lambda call to execute this?

• FunctionName

• Layers

• Environment

• Handler

You've been asked to develop an application on the AWS Cloud. The application will be used to store confidential documents in an S3 bucket. You need to ensure that the bucket is defined in such a way that it doesn't accept objects that are not encrypted. How would you solve this problem?

• Ensure a condition is set in the bucket policy

• Ensure that a condition is set in an IAM policy

• Enable MFA for the underlying bucket

• Enable CORS for the underlying bucket

You want to read 420 items of 5KB each from a DynamoDB table every minute using strong consistency read. How many RCUs will you need to provision your DynamoDB table with?

• 10

• 14

• 28

• 12

You are developing a gaming application that needs to write 100 items every second. Each item is of 2KB containing session data and game data. How many WCUs do you need to provision for your DynamoDB table?

• 100

• 50

• 400

• 200