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A start-up firm has a corporate office in New York & a regional office in Washington & Chicago. These offices are interconnected over Internet links. Recently they have migrated a few application servers to EC2 instance launched in the AWS US-east-1 region. The Developer Team located at the corporate office requires secure access to these servers for initial testing & performance checks before go-live of the new application. Since the go-live date is approaching soon, the IT team is looking for quick connectivity to be established. As an AWS consultant, which link option will you suggest as a cost-effective & quick way to establish secure connectivity from on-premise to servers launched in AWS?

A. Use AWS Direct Connect to establish IPSEC connectivity from On-premise to VGW

B. Install a third party software VPN appliance from AWS Marketplace in the EC2 instance to create a VPN connection to the on-premises network

C. Use Hardware VPN over AWS Direct Connect to establish IPSEC connectivity from On-premise to VGW

D. Use AWS Site-to-Site VPN to establish IPSEC VPN connectivity between VPC and the on-premises network

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D. Use AWS Site-to-Site VPN to establish IPSEC VPN connectivity between VPC and the on-premises network

Answer: D

Explanation

Using AWS VPN is the fastest & cost-effective way of establishing IPSEC connectivity from on-premise to AWS. IT teams can quickly set up a VPN connection with VGW in the US-east-1 region so that internal users can seamlessly connect to resources hosted on AWS.

Option A is incorrect as AWS Direct Connect does not provide IPSEC connectivity. It is not a quick way to establish connectivity.

Option B is incorrect as you need to look for a third party solution from AWS Marketplace. And it may not be as cost-efficient as option D.

Option C is incorrect as although this will provide a high performance secure IPSEC connectivity from On-premise to AWS, it is not a quick way to establish connectivity. It may take weeks or months to configure the AWS Direct Connect connection. AWS Direct Connect is also not cost-effective.

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