A user has configured a website and launched it using the Apache web server on port 80. The user is using ELB with the EC2 instances for Load Balancing. What should the user do to ensure that the EC2 instances accept requests only from ELB?

• A.Configure the security group of EC2, which allows access to the ELB source security group
• B.Configure the EC2 instance so that it only listens on the ELB port
• C.Open the port for an ELB static IP in the EC2 security group
• D.Configure the security group of EC2, which allows access only to the ELB listener

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Which services can invoke AWS lambda functions?

• A.Amazon Redshift
• B.Amazon DynamoDB
• C.Elastic Load Blanching
• D.Amazon SNS
• E.Amazon Route53

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A company's facility has badge readers at every entrance throughout the building. When badges are scanned, the readers send a message over HTTPS to indicate who attempted to access that particular entrance.
A solutions architect must design a system to process these messages from the sensors. The solution must be highly available, and the results must be made available for the company's security team to analyze.
Which system architecture should the solutions architect recommend?

• A.Launch an Amazon EC2 instance to serve as the HTTPS endpoint and to process the messages Configure the EC2 instance to save the results to an Amazon S3 bucket.
• B.Create an HTTPS endpoint in Amazon API Gateway. Configure the API Gateway endpoint to invoke an AWS Lambda function to process the messages and save the results to an Amazon DynamoDB table.
• C.Use Amazon Route 53 to direct incoming sensor messages to an AWS Lambda function. Configure the Lambda function to process the messages and save the results to an Amazon DynamoDB table.
• D.Create a gateway VPC endpoint for Amazon S3. Configure a Site-to-Site VPN connection from the facility network to the VPC so that sensor data can be written directly to an S3 bucket by way of the VPC endpoint.

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A company is deploying a multi-instance application within AWS that requires minimal latency between the instances.
What should a solutions architect recommend?

• A.Use an Auto Scaling group with multiple Availability Zones in the same AWS Region.
• B.Use an Auto Scaling group with a cluster placement group.
• C.Use a Network Load Balancer with multiple Amazon EC2 Dedicated Hosts as the targets
• D.Use an Auto Scaling group with single Availability Zone in the same AWS Region.

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You need to develop and run some new applications on AWS and you know that Elastic Beanstalk and CloudFormation can both help as a deployment mechanism for a broad range of AWS resources.
Which of the following is TRUE statements when describing the differences between Elastic Beanstalk and CloudFormation?

• A.AWS Elastic Beanstalk introduces two concepts: The template, a JSON or YAML-format, text- based file
• B.Elastic Beanstalk supports AWS CloudFormation application environments as one of the AWS resource types.
• C.Elastic Beanstalk automates and simplifies the task of repeatedly and predictably creating groups of related resources that power your applications. CloudFormation does not.
• D.You can design and script custom resources in CloudFormation

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