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A company has deployed Amazon EC2 instances in private subnets in a VPC. The EC2 instances must initiate any requests that leave the VPC, including requests to the company's on-premises data center over an AWS Direct Connect connection. No resources outside the VPC can be allowed to open communications directly to the EC2 instances.
The on-premises data center's customer gateway is configured with a stateful firewall device that filters for incoming and outgoing requests to and from multiple VPCs. In addition, the company wants to use a single IP match rule to allow all the communications from the EC2 instances to its data center from a single IP address.
Which solution will meet these requirements with the LEAST amount of operational overhead?
An organization is replacing a tape backup system with a storage gateway. there is currently no connectivity to AWS. Initial testing is needed.
What connection option should the organization use to get up and running at minimal cost?
A company is migrating an existing application to a new AWS account. The company will deploy the application in a single AWS Region by using one VPC and multiple Availability Zones. The application will run on Amazon EC2 instances. Each Availability Zone will have several EC2 instances. The EC2 instances will be deployed in private subnets.
The company's clients will connect to the application by using a web browser with the HTTPS protocol. Inbound connections must be distributed across the Availability Zones and EC2 instances. All connections from the same client session must be connected to the same EC2 instance. The company must provide end-to-end encryption for all connections between the clients and the application by using the application SSL certificate.
Which solution will meet these requirements?
A network engineer is working on a large migration effort from an on-premises data center to an AWS Control Tower based multi-account environment. The environment
has a transit gateway that is deployed to a central network services account. The central network services account has been shared with an organization in AWS
Organizations through AWS Resource Access Manager (AWS RAM).
A shared services account also exists in the environment. The shared services account hosts workloads that need to be shared with the entire organization.
The network engineer needs to create a solution to automate the deployment of common network components across the environment. The solution must provision a
VPC for application workloads to each new and existing member account. The VPCs must be connected to the transit gateway in the central network services account.
Which combination of steps will meet these requirements with the LEAST operational overhead? (Select THREE.)
The correct answer is A, C, and D. These steps will meet the requirements with the least operational overhead because:
* Step A will deploy an AWS Lambda function to the shared services account that can automate the network infrastructure provisioning in each member account by assuming a role with the necessary permissions.
* Step C will create an AWS CloudFormation template that describes the VPC and the transit gateway attachment for each account. This template can be uploaded as an AWS Service Catalog product to the shared services account, which can be used by the AWS Lambda function to create the network resources in each member account.
* Step D will deploy an Amazon EventBridge rule on a default event bus in the shared services account that can react to AWS Control Tower lifecycle events, such as creating a new managed account. This rule can invoke the AWS Lambda function to provision the network infrastructure in the new account.
The other steps are incorrect because:
* Step B will update the existing accounts with an Account Factory Customization (AFC), which is a feature of AWS Control Tower that allows you to customize the account creation process with AWS CloudFormation templates. However, this step will not automate the network infrastructure provisioning for the existing accounts, as it only applies to the new accounts created through the Account Factory. Moreover, this step will require additional operational overhead to maintain the AFC templates and products.
* Step E will create an AWSControlTowerBlueprintAccess role in the shared services account, which is a role that allows AWS Control Tower to access the AWS Service Catalog products in the shared services account. However, this step is not necessary for the automation solution, as the AWS Lambda function can access the AWS Service Catalog products directly without using this role.
* Step F will create an AWSControlTowerBlueprintAccess role in each member account, which is a role that allows AWS Control Tower to access the AWS Service Catalog products in the member accounts. However, this step is not necessary for the automation solution, as the AWS Lambda function can access the AWS Service Catalog products in the shared services account without using this role.
A data analytics company has a 100-node high performance computing (HPC) cluster. The HPC cluster is for parallel data processing and is hosted in a VPC in the AWS Cloud. As part of the data processing workflow, the HPC cluster needs to perform several DNS queries to resolve and connect to Amazon RDS databases, Amazon S3 buckets, and on-premises data stores that are accessible through AWS Direct Connect. The HPC cluster can increase in size by five to seven times during the company's peak event at the end of the year.
The company is using two Amazon EC2 instances as primary DNS servers for the VPC. The EC2 instances are configured to forward queries to the default VPC resolver for Amazon Route 53 hosted domains and to the on-premises DNS servers for other on-premises hosted domain names. The company notices job failures and finds that DNS queries from the HPC cluster nodes failed when the nodes tried to resolve RDS and S3 bucket endpoints.
Which architectural change should a network engineer implement to provide the DNS service in the MOST scalable way?
